Updated on 2026/06/16

写真a

 
Ikeda Tomiki
 
Organization
Research and Development Initiative Institute Professor
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Degree

  • 工学博士 ( 京都大学 )

Education

  • 1978.3
     

    Kyoto University   doctor course   completed

Research History

  • 2011 -  

    Aoyama Gakuin University

  • 2011 -  

    Chuo University   Research and Development Initiative   Professor

  • 2009 -  

    Tokyo Institute of Technology   Chemical Resources Laboratory   Director in General

  • 1994 -  

    Tokyo Institute of Technology   Chemical Resources Laboratory

  • 1992 -  

    Tokyo Institute of Technology   Chemical Resources Laboratory

  • 1986 -  

    Tokyo Institute of Technology   Chemical Resources Laboratory

  • 1981 -  

    Tokyo Institute of Technology   Chemical Resources Laboratory

  • 1978 -  

    英国リバプール大学 博士研究員

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Professional Memberships

  •   - Now

    Royal Sciety of Chemistry, UK

  • アメリカ化学会

  • 電気化学会

  • 応用物理学会

  • 光化学協会

  • 日本液晶学会

  • 高分子学会

  • 日本化学会

  • The Americal Chemical Society

  • The Electrochemical Society of Japan

  • The Japan Society of Applied Physics

  • Japanese Photochemistry Association

  • Japanese Liquid Crystal Society

  • The Society of Polymer Science, Japan

  • Chemical Society of Japan

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Research Areas

  • Nanotechnology/Materials / Functional solid state chemistry  / 高分子化学

Papers

  • Can sunlight drive the photoinduced bending of polymer films?

    Ruoyuan Yin, Wanxian Xu, Mizuho Kondo, Chu-Chun Yen, Jun-ichi Mamiya, Tomiki Ikeda, Yanlei Yu

    JOURNAL OF MATERIALS CHEMISTRY   19 ( 20 )   3141 - 3143   2009

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    DOI: 10.1039/b904973h

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  • Photomechanics: directed bending of a polymer film by light. Reviewed International journal

    Yanlei Yu, Makoto Nakano, Tomiki Ikeda

    Nature   425 ( 6954 )   145 - 145   2003.9

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  • Bioinspired Photo‐Actuator of Liquid Crystal Polymer Based on the Integrated Effect of Alignment Mode and Architecture Design

    Ziqi Zhang, Chengliang Li, Yinggang Jia, Qiaoqiang Gan, Toru Ube, Tomiki Ikeda, Jingxia Wang, Lei Jiang

    Advanced Materials Technologies   11 ( 1 )   2025.9

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    Publishing type:Research paper (scientific journal)   Publisher:Wiley  

    Abstract

    Inspired by the interesting actuating phenomenon in nature, various superior photo‐actuation performance and promising applications have been developed from liquid crystal polymer with combined properties of both the anisotropy of liquid crystals and the reversible deformation properties of elastomers. Their photo‐actuation behaviors and the potential applications mainly depend on the integrated effect of alignment modes and the architecture of liquid crystal elastomers (LCEs). This review summarizes the bio‐inspired fabrication of a photo‐responsive actuator of LCE based on the alignment mode integrated of the architecture (including assembly approach, cutting technique, layer structure, etc), referring to the concept, basic properties of LCE, and the various alignment modes for the assembled LCE. Especially, the emphasis is put on the various LCE actuation behaviors based on different molecular alignment modes (e.g., planar, splay, and complex alignment) integrated into architecture design, such as simple bending driven from planar alignment, self‐oscillation and jumping driven by splay alignment, and complex deformations like conical morphologies triggered by complex alignment. Finally, current challenges and potential research directions are discussed, which provide insights for the design and fabrication of the new actuation mode.

    DOI: 10.1002/admt.202501203

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  • Sunlight-Driven Photomobile Polymer Materials Containing Push–Pull Azobenzene Moieties

    Toru Ube, Kuniaki Miyamoto, Seiji Kurihara, Tomiki Ikeda

    ACS Applied Materials & Interfaces   2025.3

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    Publishing type:Research paper (scientific journal)   Publisher:American Chemical Society (ACS)  

    DOI: 10.1021/acsami.4c21123

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  • Spatially selective actuation of liquid-crystalline polymer films through two-photon absorption processes

    Toru Ube, Shota Sasaki, Kenji Katayama, Hikaru Sotome, Hiroshi Miyasaka, Ryota Mizutani, Kenji Kamada, Tomiki Ikeda

    Nature Communications   15 ( 1 )   2024.11

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    Publishing type:Research paper (scientific journal)   Publisher:Springer Science and Business Media LLC  

    DOI: 10.1038/s41467-024-53682-8

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    Other Link: https://www.nature.com/articles/s41467-024-53682-8

  • Inducing Motions of Polymers in Liquid Nitrogen with Light

    Toru Ube, Ikumi Suka, Shunya Ogikubo, Gaku Hashimoto, Masayuki Suda, Hiroshi M. Yamamoto, Tomiki Ikeda

    Advanced Materials   2023.10

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    Publishing type:Research paper (scientific journal)   Publisher:Wiley  

    Abstract

    Polymer materials that show macroscopic deformation in response to external stimuli are feasible for novel soft actuators including microactuators. Incorporation of photochromic moieties, such as azobenzenes, into polymer networks enables macroscopic deformation under irradiation with light through photoisomerization. Under cryogenic conditions, however, it has been difficult to induce macroscopic deformation as polymers lose their soft nature due to the severe restrictions of molecular motions. Here, activation of molecular motions and macroscopic deformation in liquid nitrogen only with light for polymers containing photochromic moieties is reported. Photoinduced bending of polymer networks with normal azobenzenes in liquid nitrogen is enabled by preliminary UV irradiation at room temperature to produce cis‐isomers. To realize photoinduced deformation directly in liquid nitrogen, polymer networks are functionalized with bridged azobenzenes, which exist as cis‐isomers in thermodynamic equilibrium. The films with bridged azobenzenes exhibit reversible photoisomerization and bending upon irradiation with light in liquid nitrogen without the need of preliminary irradiation, implying that the change in conformation of polymer chains can be isothermally induced even under cryogenic conditions. Achievement of flexible motions under cryogenic conditions through isothermal processes will greatly expand the operating temperature range of soft actuators.

    DOI: 10.1002/adma.202306402

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  • Shape programming and photoactuation of interpenetrating polymer networks containing azobenzene moieties Reviewed

    Toru Ube, Keigo Naito, Tomiki Ikeda

    JOURNAL OF MATERIALS CHEMISTRY C   11 ( 24 )   8100 - 8106   2023.6

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    DOI: 10.1039/d2tc04067k

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  • Photo/heat/electricity/pressure-driven photonic pattern with multimode memory effect Reviewed

    Yuanyuan Shang, Junchao Liu, Bo Guan, Jinbao Guo, Tomiki Ikeda, Jingxia Wang, Lei Jiang

    CHEMICAL ENGINEERING JOURNAL   457   2023.2

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    DOI: 10.1016/j.cej.2022.141215

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  • Sunlight-driven smart windows with polymer/liquid crystal composites for autonomous control of optical properties Reviewed

    Toru Ube, Jumpei Imai, Marie Yoshida, Toru Fujisawa, Hiroshi Hasebe, Haruyoshi Takatsu, Tomiki Ikeda

    JOURNAL OF MATERIALS CHEMISTRY C   10 ( 35 )   12789 - 12794   2022.9

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    DOI: 10.1039/d2tc02754b

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  • High-Resolution Erasable "Live" Patterns Based on Controllable Ink Diffusion on the 3D Blue-Phase Liquid Crystal Networks Reviewed

    Fanshu Meng, Chenglin Zheng, Wenjie Yang, Bo Guan, Jingxia Wang, Tomiki Ikeda, Lei Jiang

    ADVANCED FUNCTIONAL MATERIALS   32 ( 15 )   2022.4

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    DOI: 10.1002/adfm.202110985

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  • Single-, Dual-, Triple, and Quadruple-Wavelength Surface-Emitting Lasing in Blue-Phase Liquid Crystal Reviewed

    Jie Liu, Yujie Chen, Feng Jin, Jingxia Wang, Tomiki Ikeda, Lei Jiang

    ADVANCED MATERIALS   34 ( 9 )   2022.3

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    DOI: 10.1002/adma.202108330

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  • Janus Photochemical/Photothermal Azobenzene Inverse Opal Actuator with Shape Self-Recovery toward Sophisticated Motion Reviewed

    Junchao Liu, Yuanyuan Shang, Jie Liu, Jingxia Wang, Tomiki Ikeda, Lei Jiang

    ACS APPLIED MATERIALS & INTERFACES   14 ( 1 )   1727 - 1739   2022.1

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1021/acsami.1c19826

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  • Photoinduced Motions of Thermoplastic Polyurethanes Containing Azobenzene Moieties in Main Chains Reviewed

    Toru Ube, Romu Nakayama, Tomiki Ikeda

    MACROMOLECULES   55 ( 2 )   413 - 420   2022.1

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1021/acs.macromol.1c01827

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  • Liquid-Phase Super Photoactuator through the Synergetic Effects of a Janus Structure and Solvent/Thermal/Photo Responses Reviewed

    Junchao Liu, Jingxia Wang, Tomiki Ikeda, Lei Jiang

    ADVANCED FUNCTIONAL MATERIALS   31 ( 48 )   2021.11

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1002/adfm.202105728

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  • Diffusionless transformation of soft cubic superstructure from amorphous to simple cubic and body-centered cubic phases Reviewed

    Jie Liu, Wenzhe Liu, Bo Guan, Bo Wang, Lei Shi, Feng Jin, Zhigang Zheng, Jingxia Wang, Tomiki Ikeda, Lei Jiang

    NATURE COMMUNICATIONS   12 ( 1 )   2021.6

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1038/s41467-021-23631-w

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  • Photoalignment in Polysiloxane Liquid-Crystalline Elastomers with Rearrangeable Networks Reviewed

    Toru Ube, Haruna Tsunoda, Kyohei Kawasaki, Tomiki Ikeda

    ADVANCED OPTICAL MATERIALS   9 ( 9 )   2021.5

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1002/adom.202100053

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  • Inkless Rewritable Photonic Crystals Paper Enabled by a Light-Driven Azobenzene Mesogen Switch Reviewed

    Junchao Liu, Yao Wang, Jingxia Wang, Guofu Zhou, Tomiki Ikeda, Lei Jiang

    ACS APPLIED MATERIALS & INTERFACES   13 ( 10 )   12383 - 12392   2021.3

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1021/acsami.0c22668

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  • Photonic Shape Memory Polymer Based on Liquid Crystalline Blue Phase Films Reviewed

    Jiajia Yang, Weidong Zhao, Zhou Yang, Wanli He, Jingxia Wang, Tomiki Ikeda, Lei Jiang

    ACS APPLIED MATERIALS & INTERFACES   11 ( 49 )   46124 - 46131   2019.12

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1021/acsami.9b14202

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  • Cross-linked liquid-crystalline polymers as photomobile materials

    Toru Ube, Tomiki Ikeda

    Mechanically Responsive Materials for Soft Robotics   209 - 232   2019.11

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    DOI: 10.1002/9783527822201.ch8

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  • Printable photonic polymer coating based on a monodomain blue phase liquid crystal network Reviewed

    Jiajia Yang, Weidong Zhao, Zhou Yang, Wanli He, Jingxia Wang, Tomiki Ikeda, Lei Jiang

    JOURNAL OF MATERIALS CHEMISTRY C   7 ( 44 )   13764 - 13769   2019.11

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1039/c9tc05052c

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  • Photomobile Polymer Materials with Complex 3D Deformation, Continuous Motions, Self-Regulation, and Enhanced Processability Reviewed

    Toru Ube, Tomiki Ikeda

    ADVANCED OPTICAL MATERIALS   7 ( 16 )   2019.8

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  • Fabrication and photonic applications of large-domain blue phase films Reviewed

    Jiajia Yang, Jie Liu, Bo Guan, Wanli He, Zhou Yang, Jingxia Wang, Tomiki Ikeda, Lei Jiang

    JOURNAL OF MATERIALS CHEMISTRY C   7 ( 31 )   9460 - 9466   2019.8

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1039/c9tc02938a

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  • Bio-inspired liquid crystal actuator materials Reviewed

    Yuanyuan Shang, Jingxia Wang, Tomiki Ikeda, Lei Jiang

    JOURNAL OF MATERIALS CHEMISTRY C   7 ( 12 )   3413 - 3428   2019.3

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  • A UV-Responsive Multifunctional Photoelectric Device Based on Discotic Columnar Nanostructures and Molecular Motors Reviewed

    Cheng Zou, Jian Sun, Meng Wang, Jingxia Wang, Yuchen Wu, Lanying Zhang, Zhongpeng Zhu, Guirong Xiong, Lei Jiang, Tomiki Ikeda, Huai Yang

    ADVANCED MATERIALS   31 ( 8 )   2019.2

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    DOI: 10.1002/adma.201806016

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  • Patterning Smectic Liquid Crystals for OFETs at Low Temperature Reviewed

    Cheng Zou, Naoto Yanahashi, Yuchen Wu, Jingxia Wang, Cuihong Zhang, Guirong Xiong, Huai Yang, Lei Jiang, Tomiki Ikeda

    ADVANCED FUNCTIONAL MATERIALS   29 ( 7 )   2019.2

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1002/adfm.201804838

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  • Fabrication of photomobile polymer materials with phase-separated structure of crosslinked azobenzene liquid-crystalline polymer and poly(dimethylsiloxane) Reviewed

    Toru Ube, Takuya Yoda, Tomiki Ikeda

    LIQUID CRYSTALS   45 ( 13-15 )   2269 - 2273   2018.12

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1080/02678292.2018.1516822

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  • A Hydrophilic/Hydrophobic Janus Inverse-Opal Actuator via Gradient Infiltration Reviewed

    Dajie Zhang, Jie Liu, Bo Chen, Yong Zhao, Jingxia Wang, Tomiki Ikeda, Lei Jiang

    ACS NANO   12 ( 12 )   12149 - 12158   2018.12

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1021/acsnano.8b05758

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  • Photoinduced deformation and isomerization of azobenzene liquid-crystalline polymer films at cryogenic temperature Reviewed

    Shunya Ogikubo, Gaku Hashimoto, Toru Ube, Masayuki Suda, Hiroshi Yamamoto, Tomiki Ikeda

    Molecular Crystals and Liquid Crystals   676 ( 1 )   30 - 35   2018.11

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    DOI: 10.1080/15421406.2019.1595490

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  • Supramolecular assemblies composed of polymer brushes and conjugated molecules for organic photovoltaics Reviewed

    Romu Nakayama, Toru Ube, Kenji Katayama, Masa-aki Haga, Tomiki Ikeda

    MOLECULAR CRYSTALS AND LIQUID CRYSTALS   676 ( 1 )   24 - 29   2018.11

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    DOI: 10.1080/15421406.2019.1595484

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  • Remolding of Photoresponsive Polymer Materials by Means of Dynamic Covalent Bonds In a Main Chain Reviewed

    Masaya Matsushita, Kyohei Kawasaki, Toru Ube, Tomiki Ikeda

    MOLECULAR CRYSTALS AND LIQUID CRYSTALS   676 ( 1 )   17 - 23   2018.11

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    DOI: 10.1080/15421406.2019.1595482

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  • Reversible solvent- sensitive actuator with continuous bending/ debending process from liquid crystal elastomer- colloidal material Reviewed

    Yuanyuan Shang, Junchao Liu, Manbo Zhang, Wanli He, Xinyu Cao, Jingxia Wang, Tomiki Ikeda, Lei Jiang

    SOFT MATTER   14 ( 27 )   5547 - 5553   2018.7

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1039/c8sm00927a

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  • Patterning of Discotic Liquid Crystals with Tunable Molecular Orientation for Electronic Applications Reviewed

    Cheng Zou, Jingxia Wang, Meng Wang, Yuchen Wu, Kehua Gu, Zhihao Shen, Guirong Xiong, Huai Yang, Lei Jiang, Tomiki Ikeda

    SMALL   14 ( 21 )   2018.5

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1002/smll.201800557

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  • Multi-functional organosilane-polymerized carbon dot inverse opals Reviewed

    Junchao Liu, Junkai Ren, Zheng Xie, Bo Guan, Jingxia Wang, Tomiki Ikeda, Lei Jiang

    NANOSCALE   10 ( 10 )   4642 - 4649   2018.3

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1039/c7nr09387j

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  • Liquid-crystalline elastomer photoactuator with photorearrangeable network structures Reviewed

    Haruna Tsunoda, Kyohei Kawasaki, Toru Ube, Tomiki Ikeda

    Molecular Crystals and Liquid Crystals   662 ( 1 )   61 - 67   2018.2

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    DOI: 10.1080/15421406.2018.1466242

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  • Formation of ordered nanostructures in liquid-crystalline block copolymers with side-chain semiconductor materials Reviewed

    Naoto Yanahashi, Toru Ube, Tomiki Ikeda

    MOLECULAR CRYSTALS AND LIQUID CRYSTALS   662 ( 1 )   68 - 74   2018

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    DOI: 10.1080/15421406.2018.1466243

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  • A historical overview of photomechanical effects in materials, composites, and systems

    Toru Ube, Tomiki Ikeda

    Photomechanical Materials, Composites, and Systems: Wireless Transduction of Light into Work   1 - 35   2017.5

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    DOI: 10.1002/9781119123279.ch1

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  • Electrowetting-Induced Morphological Evolution of Metal-Organic Inverse Opals toward a Water-Lithography Approach Reviewed

    Junchao Liu, Lun Wan, Manbo Zhang, Kejian Jiang, Kai Song, Jingxia Wang, Tomiki Ikeda, Lei Jiang

    ADVANCED FUNCTIONAL MATERIALS   27 ( 7 )   2017.2

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1002/adfm.201605221

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  • Interpenetrating polymer networks of liquid-crystalline azobenzene polymers and poly(dimethylsiloxane) as photomobile materials Reviewed

    T. Ube, K. Minagawa, T. Ikeda

    Soft Matter   13 ( 35 )   5820 - 5823   2017

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:Royal Society of Chemistry  

    DOI: 10.1039/c7sm01412k

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  • Photomobile Liquid-Crystalline Elastomers with Rearrangeable Networks Reviewed

    Toru Ube, Kyohei Kawasaki, Tomiki Ikeda

    ADVANCED MATERIALS   28 ( 37 )   8212 - 8217   2016.10

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    DOI: 10.1002/adma.201602745

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  • Nano Structures of Thin Films of Block Copolymers with Oligothiophene Side Chains Reviewed

    Masahiro Kaneko, Nana Takayanagi, Toru Ube, Masa-Aki Haga, Tomiki Ikeda

    MOLECULAR CRYSTALS AND LIQUID CRYSTALS   617 ( 1 )   58 - 66   2015.8

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  • Synthesis of Polythiophene with a Photo-Crosslinkable Side Chain Reviewed

    Takahito Kosaka, Toru Ube, Masa-Aki Haga, Tomiki Ikeda

    MOLECULAR CRYSTALS AND LIQUID CRYSTALS   617 ( 1 )   67 - 72   2015.8

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  • Remoldable Crosslinked Liquid-Crystalline Polysiloxane with Side Chain Mesogens Based on Exchangeable Crosslinks Reviewed

    Kyohei Kawasaki, Toru Ube, Tomiki Ikeda

    MOLECULAR CRYSTALS AND LIQUID CRYSTALS   614 ( 1 )   62 - 66   2015.6

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    DOI: 10.1080/15421406.2015.1049910

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  • Photomobile Polymer Materials: Photoresponsive Behavior of Cross-Linked Liquid-Crystalline Polymers with Mesomorphic Diarylethenes Reviewed

    Jun-ichi Mamiya, Akito Kuriyama, Naoki Yokota, Munenori Yamada, Tomiki Ikeda

    CHEMISTRY-A EUROPEAN JOURNAL   21 ( 8 )   3174 - 3177   2015.2

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    DOI: 10.1002/chem.201406299

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  • Structural dynamics in azobenzene liquid crystal polymer films studied by microscopic time-resolved technique Reviewed

    Kenji Katayama, Shota Kuwahara, Tomiki Ikeda

    LIQUID CRYSTALS XIX   9565   2015

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    DOI: 10.1117/12.2186414

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  • Photomobile Polymer Materials with Crosslinked Liquid-Crystalline Structures: Molecular Design, Fabrication, and Functions Reviewed

    Toru Ube, Tomiki Ikeda

    ANGEWANDTE CHEMIE-INTERNATIONAL EDITION   53 ( 39 )   10290 - 10299   2014.9

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1002/anie.201400513

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  • Photomobile Polymer Materials with Double Network Structures: Crosslinked Azobenzene Liquid-Crystalline Polymer/Methacrylate Composites Reviewed

    Kiyohide Takado, Toru Ube, Tomiki Ikeda

    MOLECULAR CRYSTALS AND LIQUID CRYSTALS   601 ( 1 )   43 - 48   2014.9

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    DOI: 10.1080/15421406.2014.940491

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  • Photoinduced Bending Behavior of Cross-linked Azobenzene Liquid-Crystalline Polymer Films with a Poly(oxyethylene) Backbone Reviewed

    Jiu-an Lv, Weiru Wang, Jixiang Xu, Tomiki Ikeda, Yanlei Yu

    MACROMOLECULAR RAPID COMMUNICATIONS   35 ( 14 )   1266 - 1272   2014.7

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1002/marc.201400112

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  • Facile strain analysis of largely bending films by a surface-labelled grating method Reviewed

    Norihisa Akamatsu, Wataru Tashiro, Keisuke Saito, Jun-ichi Mamiya, Motoi Kinoshita, Tomiki Ikeda, Jun Takeya, Shigenori Fujikawa, Arri Priimagi, Atsushi Shishido

    SCIENTIFIC REPORTS   4   2014.6

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1038/srep05377

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  • Photomobile Properties of Interpenetrating Polymer Network Films Composed of Azobenzene Liquid Crystalline Polymer and Polymethacrylates Reviewed

    Toru Ube, Kiyohide Takado, Tomiki Ikeda

    MOLECULAR CRYSTALS AND LIQUID CRYSTALS   594 ( 1 )   86 - 91   2014.5

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    DOI: 10.1080/15421406.2014.917479

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  • Function of liquid crystals Invited Reviewed

    Junichi Hanna, Tomiki Ikeda, Toru Ube, Masanori Ozaki, Takashi Kato, Masafumi Yoshio, Atsushi Yoshizawa

    The Liquid Crystal Display Story: 50 Years of Liquid Crystal R and D that Lead the Way to the Future   357 - 410   2014.1

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    Language:English   Publishing type:Part of collection (book)   Publisher:Springer Japan  

    DOI: 10.1007/978-4-431-54859-1_11

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  • Molecular dynamics in azobenzene liquid crystal polymer films by transient grating technique Reviewed

    Kenji Katayama, Tomomi Fujii, Shota Kuwahara, Takado Kiyohide, Tomiki Ikeda

    LIQUID CRYSTALS XVIII   9182   2014

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    DOI: 10.1117/12.2059740

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  • Depth-selective microscopic observation of a photomobile liquid crystal polymer under UV illumination Reviewed

    Kenji Katayama, Youngwoon Choi, Jeon Woong Kang, Zahid Yaqoob, Peter T. C. So, Tomomi Fujii, Shota Kuwahara, Kiyohide Takado, Tomiki Ikeda

    PHYSICAL CHEMISTRY CHEMICAL PHYSICS   16 ( 48 )   27074 - 27077   2014

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1039/c4cp04602a

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  • Enhancement of mechanical stability in hydrogen-bonded photomobile materials with chemically modified single-walled carbon nanotubes Reviewed

    Tetsuya Ozawa, Mizuho Kondo, Jun-ichi Mamiya, Tomiki Ikeda

    JOURNAL OF MATERIALS CHEMISTRY C   2 ( 13 )   2313 - 2315   2014

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1039/c3tc32585g

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  • Liquid-Crystalline Nano-optomechanical Actuator Reviewed

    Stanislav Tsoi, Jing Zhou, Christopher Spillmann, Jawad Naciri, Tomiki Ikeda, Banahalli Ratna

    MACROMOLECULAR CHEMISTRY AND PHYSICS   214 ( 6 )   734 - 741   2013.3

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    DOI: 10.1002/macp.201200581

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  • Location of the Azobenzene Moieties within the Cross-Linked Liquid-Crystalline Polymers Can Dictate the Direction of Photoinduced Bending Reviewed

    Priimagi Arri, Shimamura Aki, Kondo Mizuho, Hiraoka Tomohiro, Kubo Shoichi, Mamiya Jun-Ichi, Kinoshita Motoi, Ikeda Tomiki, Shishido Atsushi

    ACS MACRO LETTERS   1 ( 1 )   96 - 99   2012.1

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    DOI: 10.1021/mz200056w

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  • Synthesis and Emission Behavior of Liquid-Crystalline Main-Chain Polyesters Containing Carbazole and Oxadiazole Moieties Reviewed

    Kinoshita Motoi, Takamura Kenji, Kawamoto Masuki, Shishido Atsushi, Shiono Takeshi, Ikeda Tomiki

    MOLECULAR CRYSTALS AND LIQUID CRYSTALS   563   92 - 100   2012

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    DOI: 10.1080/15421406.2012.688625

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  • Polarized Emission Behavior of Pt Complex-Doped Polymer Films Reviewed

    Kinoshita Motoi, Ibaraki Kenta, Matsuura Yoshihiro, Nam Yunmi, Shishido Atsushi, Ikeda Tomiki

    MOLECULAR CRYSTALS AND LIQUID CRYSTALS   563   83 - 91   2012

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    DOI: 10.1080/15421406.2012.688619

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  • PHOTOINDUCED BENDING UPON PULSED IRRADIATION IN AZOBENZENE-CONTAINING CROSSLINKED LIQUID-CRYSTALLINE POLYMERS Reviewed

    Aki Shimamura, Arri Priimagi, Jun-Ichi Mamiya, Motoi Kinoshita, Tomiki Ikeda, Atsushi Shishido

    JOURNAL OF NONLINEAR OPTICAL PHYSICS & MATERIALS   20 ( 4 )   405 - 413   2011.12

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    DOI: 10.1142/S0218863511006200

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  • Simultaneous Analysis of Optical and Mechanical Properties of Cross-Linked Azobenzene-Containing Liquid-Crystalline Polymer Films Reviewed

    Aid Shimamura, Arri Priimagi, Jun-ichi Mamiya, Tomiki Ikeda, Yanlei Yu, Christopher J. Barrett, Atsushi Shishido

    ACS APPLIED MATERIALS & INTERFACES   3 ( 11 )   4190 - 4196   2011.11

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    DOI: 10.1021/am200621j

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  • Photomobile polymer materials: from nano to macro Reviewed

    Tomiki Ikeda, Toru Ube

    MATERIALS TODAY   14 ( 10 )   480 - 487   2011.10

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    DOI: 10.1016/S1369-7021(11)70212-7

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  • Photomechanical effects of cross-linked liquid-crystalline polymers

    Jun-Ichi Mamiya, Yanlei Yu, Tomiki Ikeda

    Cross-Linked Liquid Crystalline Systems: From Rigid Polymer Networks to Elastomers   183 - 204   2011.1

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  • Direct fabrication of photomobile polymer materials with an adhesive-free bilayer structure by electron-beam irradiation Reviewed

    Yumiko Naka, Jun-ichi Mamiya, Atsushi Shishido, Masakazu Washio, Tomiki Ikeda

    JOURNAL OF MATERIALS CHEMISTRY   21 ( 6 )   1681 - 1683   2011

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    DOI: 10.1039/c0jm03901b

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  • Solvent induced amplification of the photoresponsive properties of alpha,omega-di-[4-cyanophenyl-4 '-(6-hexyloxy)-azobenzene]-poly (N-isopropylacrylamide) in aqueous media Reviewed

    Norihito Ishii, Jun-ichi Mamiya, Tomiki Ikeda, Francoise M. Winnik

    CHEMICAL COMMUNICATIONS   47 ( 4 )   1267 - 1269   2011

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    DOI: 10.1039/c0cc04009f

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  • Analysis of Photoinduced Change in Properties on Macroscopic Motion of Crosslinked Azobenzene Liquid-Crystalline Polymers Reviewed

    Aki Shimamura, Jun-Ichi Mamiya, Atsushi Shishido, Tomiki Ikeda

    MOLECULAR CRYSTALS AND LIQUID CRYSTALS   550   57 - 65   2011

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    DOI: 10.1080/15421406.2011.600213

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  • Synthesis of Crosslinked Liquid-Crystalline Polymer Brushes on Flexible Polymer Films Toward Photomobile Materials Reviewed

    Y. Naka, J. Mamiya, A. Shishido, T. Ikeda

    MOLECULAR CRYSTALS AND LIQUID CRYSTALS   547   142 - 151   2011

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    DOI: 10.1080/15421406.2011.572809

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  • Three-Dimensional Photomobility of Crosslinked Azobenzene Liquid-Crystalline Polymer Fibers Reviewed

    Taiki Yoshino, Mizuho Kondo, Jun-ichi Mamiya, Motoi Kinoshita, Yanlei Yu, Tomiki Ikeda

    ADVANCED MATERIALS   22 ( 12 )   1361 - +   2010.3

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    DOI: 10.1002/adma.200902879

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  • Preparation of Crosslinked Liquid-Crystalline Polymers by Electron-Beam Irradiation and Their Photoinduced Bending Behavior Reviewed

    Naka Yumiko, Mamiya Jun-ichi, Shishido Atsushi, Washio Masakazu, Ikeda Tomiki

    MOLECULAR CRYSTALS AND LIQUID CRYSTALS   529   71 - 79   2010

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    DOI: 10.1080/15421406.2010.495897

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  • Effect of concentration of photoactive chromophores on photomechanical properties of crosslinked azobenzene liquid-crystalline polymers Reviewed

    Kondo Mizuho, Sugimoto Manabu, Yamada Munenori, Naka Yumiko, Mamiya Jun-ichi, Kinoshita Motoi, Shishido Atsushi, Yu Yanlei, Ikeda Tomiki

    JOURNAL OF MATERIALS CHEMISTRY   20 ( 1 )   117 - 122   2010

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    DOI: 10.1039/b917342k

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  • Photoresponsive Behavior of Crosslinked Liquid-Crystalline Polymer Films with a Different Content of an Azobenzene Moiety Reviewed

    Shimamura Aki, Hiraoka Tomohiro, Kondo Mizuho, Kubo Shoichi, Mamiya Jun-ichi, Shishido Atsushi, Ikeda Tomiki

    MOLECULAR CRYSTALS AND LIQUID CRYSTALS   529   53 - 59   2010

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    DOI: 10.1080/15421406.2010.495676

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  • Synthesis and Association Behavior of Telechelic Poly(N-isopropylacrylamides) with Azobenzene End Groups Reviewed

    Norihito Ishii, Rodolphe Obeid, Xing-Ping Qiu, Jun-ichi Mamiya, Tomiki Ikeda, Francoise M. Winnik

    MOLECULAR CRYSTALS AND LIQUID CRYSTALS   529   60 - 70   2010

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    DOI: 10.1080/15421406.2010.495899

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  • Isomerization Polymerization of 4-Alkylcyclopentenes Catalyzed by Pd Complexes: Hydrocarbon Polymers with Isotactic-Type Stereochemistry and Liquid-Crystalline Properties Reviewed

    Okada Takeshi, Takeuchi Daisuke, Shishido Atsushi, Ikeda Tomiki, Osakada Kohtaro

    JOURNAL OF THE AMERICAN CHEMICAL SOCIETY   131 ( 31 )   10852 - +   2009.8

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    DOI: 10.1021/ja904150w

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  • Photomobile polymer materials-various three-dimensional movements Reviewed

    Munenori Yamada, Mizuho Kondo, Ryo Miyasato, Yumiko Naka, Jun-ichi Mamiya, Motoi Kinoshita, Atsushi Shishido, Yanlei Yu, Christopher J. Barrett, Tomiki Ikeda

    JOURNAL OF MATERIALS CHEMISTRY   19 ( 1 )   60 - 62   2009

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    DOI: 10.1039/b815289f

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  • Effect of Recording Time on Grating Formation and Enhancement in an Amphiphilic Diblock Liquid-Crystalline Copolymer Reviewed

    Yu Haifeng, Naka Yumiko, Shishido Atsushi, Iyoda Tomokazu, Ikeda Tomiki

    MOLECULAR CRYSTALS AND LIQUID CRYSTALS   498   29 - 39   2009

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    DOI: 10.1080/15421400802612094

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  • Photomechanical properties of azobenzene liquid-crystalline elastomers Reviewed

    Mizuho Kondo, Ryo Miyasato, Yumiko Naka, Jun-ichi Mamiya, Motoi Kinoshita, Yanlei Yu, Christopher J. Barrett, Tomiki Ikeda

    LIQUID CRYSTALS   36 ( 10-11 )   1289 - 1293   2009

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    DOI: 10.1080/02678290903138711

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  • Fabrication of a Liquid Crystal Microlens Array Film with Oligothiophene-Doped Polymerizable Liquid Crystals Reviewed

    Kinoshita Motoi, Kobayashi Tomohiro, Shishido Atsushi, Ikeda Tomiki

    MOLECULAR CRYSTALS AND LIQUID CRYSTALS   511   1768 - 1778   2009

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    DOI: 10.1080/15421400903054394

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  • Photoalignment and Holographic Properties of Azobenzene-Containing Block Copolymers with Oxyethylene and Alkyl Spacers Reviewed

    Naka Yumiko, Yu Haifeng, Shishido Atsushi, Ikeda Tomiki

    MOLECULAR CRYSTALS AND LIQUID CRYSTALS   513   131 - 141   2009

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    DOI: 10.1080/15421400903196120

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  • Photoresponsive and Holographic Behavior of an Azobenzene-Containing Block Copolymer and a Random Copolymer Reviewed

    Naka Yumiko, Yu Haifeng, Shishido Atsushi, Ikeda Tomiki

    MOLECULAR CRYSTALS AND LIQUID CRYSTALS   498   118 - 130   2009

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    DOI: 10.1080/15421400802615105

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  • Photoresponsive Behavior of Laminated Films Composed of a Flexible Plastic Sheet and a Crosslinked Azobenzene Liquid-Crystalline Polymer Layer with Different Initial Alignment of Mesogens Reviewed

    Munenori Yamada, Mizuho Kondo, Ryo Miyasato, Jun-ichi Mamiya, Motoi Kinoshita, Yanlei Yu, Christopher J. Barrett, Tomiki Ikeda

    MOLECULAR CRYSTALS AND LIQUID CRYSTALS   498   65 - 73   2009

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    DOI: 10.1080/15421400802612391

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  • Phosphorescent PLEDs Using Donor-Acceptor Liquid-Crystalline Polymers Containing Oxadiazole and Carbazole Reviewed

    Yunmi Nam, Yoshihiro Matsuura, Motoi Kinoshita, Tomiki Ikeda

    MOLECULAR CRYSTALS AND LIQUID CRYSTALS   513   142 - 152   2009

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    DOI: 10.1080/15421400903196138

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  • Well-Defined Liquid-Crystalline Diblock Copolymers with an Azobenzene Moiety: Synthesis, Photoinduced Alignment and their Holographic Properties Reviewed

    Yu Haifeng, Naka Yumiko, Shishido Atsushi, Ikeda Tomiki

    MACROMOLECULES   41 ( 21 )   7959 - 7966   2008.11

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    DOI: 10.1021/ma801077g

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  • Random Copolymerization of Norbornene with Higher 1-Alkene with ansa-Fluorenylamidodimethyltitanium Catalyst Reviewed

    Takeshi Shiono, Mitsunori Sugimoto, Tariqul Hasan, Zhengguo Cai, Tomiki Ikeda

    MACROMOLECULES   41 ( 22 )   8292 - 8294   2008.11

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    DOI: 10.1021/ma802119d

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  • Azo Block Copolymers in the Solid State Reviewed

    Haifeng Yu, Tomiki Ikeda

    Smart Light-Responsive Materials: Azobenzene-Containing Polymers and Liquid Crystals   411 - 456   2008.8

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    DOI: 10.1002/9780470439098.ch12

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  • Photodeformable Materials and Photomechanical Effects Based on Azobenzene-Containing Polymers and Liquid Crystals Reviewed

    Yanlei Yu, Tomiki Ikeda

    Smart Light-Responsive Materials: Azobenzene-Containing Polymers and Liquid Crystals   95 - 144   2008.8

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    DOI: 10.1002/9780470439098.ch3

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  • Subwavelength modulation of surface relief and refractive index in preirradiated liquid-crystalline polymer films Reviewed

    Yu Haifeng, Shishido Atsushi, Ikeda Tomiki

    APPLIED PHYSICS LETTERS   92 ( 10 )   2008.3

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    DOI: 10.1063/1.2894073

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  • Controlled Homeotrophic and Homogeneous Orientations for Nanoscale PhaseSeparated Domain Reviewed

    Atsunori Mori, Junichi Shikuma, Motoi Kinoshita, Tomiki Ikeda, Masahiro Misaki, Yasukiyo Ueda, Sadayuki Asaoka, Tomokazu Iyoda

    Chemistry Letters   Vol. 37, No. 3, pp. 272-273 ( 3 )   272 - 273   2008.3

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    DOI: 10.1246/cl.2008.272

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  • Homo- and copolymerization of norbornene derivatives with ethene by ansa-fluorenylamidodimethyltitanium activated with methylaluminoxane Reviewed

    Tariqul Hasan, Tomiki Ikeda, Takeshi Shiono

    JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY   45 ( 20 )   4581 - 4587   2007.10

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    DOI: 10.1002/pola.22193

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  • Circular arrangement of mesogens induced in Bragg-type polarization holograms of thick azobenzene copolymer films with a tolane moiety Reviewed

    Shishido Atsushi, Ishiguro Makoto, Ikeda Tomiki

    CHEMISTRY LETTERS   36 ( 9 )   1146 - 1147   2007.9

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    DOI: 10.1246/cl.2007.1146

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  • Synthesis and properties of photo-cross-linkable hyperbranched poly(urethane)s containing both terminal methacryloyl groups and carboxyl groups Reviewed

    Maruyama Ken, Kudo Hiroto, Ikehara Takayuki, Nishikubo Tadatomi, Nishimura Isao, Shishido Atsushi, Ikeda Tomiki

    MACROMOLECULES   40 ( 14 )   4895 - 4900   2007.7

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    DOI: 10.1021/ma062381s

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  • Azobenzene liquid-crystalline polymer for optical switching of grating waveguide couplers with a flat surface Reviewed

    Bang Chong-Uk, Shishido Atsushi, Ikeda Tomiki

    MACROMOLECULAR RAPID COMMUNICATIONS   28 ( 9 )   1040 - 1044   2007.5

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    DOI: 10.1002/marc.200700041

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  • Photoinduced nanoscale cooperative motion in a well-defined triblock copolymer Reviewed

    Yu Haifeng, Asaoka Sadayuki, Shishido Atsushi, Iyoda Tomokazu, Ikeda Tomiki

    SMALL   3 ( 5 )   768 - 771   2007.5

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    DOI: 10.1002/smll.200600724

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  • Novel wormlike nanostructures self-assembled in a well defined liquid crystalline diblock copolymer with azobenzene moieties Reviewed

    Yu Haifeng, Shishido Atsushi, Iyoda Tomokazu, Ikeda Tomiki

    MACROMOLECULAR RAPID COMMUNICATIONS   28 ( 8 )   927 - 931   2007.4

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    DOI: 10.1002/marc.200600901

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  • Direct fabrication of microlens arrays with polarization selectivity Reviewed

    Yaegashi Masahiro, Kinoshita Motoi, Shishido Atsushi, Ikeda Tomiki

    ADVANCED MATERIALS   19 ( 6 )   801 - +   2007.3

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    DOI: 10.1002/adma.200601329

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  • Photoinduced alignment and multi-processes of refractive-index gratings in pre-irradiated films of an azobenzene-containing liquid-crystalline polymer Reviewed

    Yu Haifeng, Shishido Atsushi, Iyoda Tomokazu, Ikeda Tomiki

    MOLECULAR CRYSTALS AND LIQUID CRYSTALS   470   71 - 81   2007

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    DOI: 10.1080/15421400701492788

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  • Photoinduced deformation Behavior of crosslinked azobenzene liquid-crystalline polymer films with unimorph and bimorph structure Reviewed

    Mizuho Kondo, Jun-ichi Mamiya, Motoi Kinoshita, Tomiki Ikeda, Yanlei Yu

    MOLECULAR CRYSTALS AND LIQUID CRYSTALS   478   1001 - 1013   2007

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    DOI: 10.1080/15421400701680952

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  • Preparation and characterization of crosslinked liquid-crystalline polymer films with a long Spacer Reviewed

    Jixiang Xu, Ruoyuan Yin, Yanlei Yu, Weiru Wang, Tomiki Ikeda

    MOLECULAR CRYSTALS AND LIQUID CRYSTALS   470   83 - 91   2007

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    DOI: 10.1080/15421400701492895

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  • Preparation and characterization of crosslinked azobenzene liquid-crystalline polymer fibers Reviewed

    Taiki Yoshino, Jun-ichi Mamiya, Motoi Kinoshita, Tomiki Ikeda, Yanlei Yu

    MOLECULAR CRYSTALS AND LIQUID CRYSTALS   478   989 - 999   2007

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    DOI: 10.1080/15421400701681083

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  • High-performance rewritable bragg hologram with high multiplicities Reviewed

    Atsushi Shishido, Tomiki Ikeda

    LIQUID CRYSTALS AND APPLICATIONS IN OPTICS   6587   2007

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    DOI: 10.1117/12.722666

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  • Fabrication of liquid crystal microlens arrays using dye-doped polymerizable liquid crystals Reviewed

    Motoi Kinoshita, Tomohiro Kobayashi, Michitsugu Yagi, Tomiki Ikeda

    JOURNAL OF PHOTOPOLYMER SCIENCE AND TECHNOLOGY   20 ( 1 )   91 - 92   2007

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    DOI: 10.2494/photopolymer.20.91

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  • Stable macroscopic nanocylinder arrays in an amphiphilic diblock liquid-crystalline copolymer with successive hydrogen bonds Reviewed

    Yu Haifeng, Shishido Atsushi, Li Jingze, Kamata Kaori, Iyoda Tomokazu, Ikeda Tomiki

    JOURNAL OF MATERIALS CHEMISTRY   17 ( 33 )   3485 - 3488   2007

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    DOI: 10.1039/b705748b

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  • Photoluminescent and liquid-crystalline properties of donor-acceptor-type 2,5-diarylthiazoles Reviewed

    Shikuma J, Mori A, Masui K, Matsuura R, Sekiguchi A, Ikegami H, Kawamoto M, Ikeda T

    Chemistry-an Asian Journal   2 ( 2 )   301 - 305   2007

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    DOI: 10.1002/asia.200600305

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  • Preparation and photoresponsive behavior of plastic films coated with azobenzene liquid-crystal line polymer layers Reviewed

    Munenori Yamada, Rie Okutsu, Jun-ichi Mamiya, Motoi Kinoshita, Tomiki Ikeda, Yanlei Yu

    MOLECULAR CRYSTALS AND LIQUID CRYSTALS   470   93 - 100   2007

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    DOI: 10.1080/1559961070143042

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  • Control of regular nanostructures self-assembled in an amphiphilic diblock liquid-crystal line copolymer Reviewed

    Yu Haifeng, Li Jingze, Shishido Atsushi, Iyoda Tomokazu, Ikeda Tomiki

    MOLECULAR CRYSTALS AND LIQUID CRYSTALS   478   1027 - 1037   2007

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    DOI: 10.1080/15421400701680812

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  • Synthesis and photoresponsive behavior of a liquid-crystalline polymer with a 4-ring azotolane moiety with huge birefringence Reviewed

    Okano Kunihiko, Shishido Atsushi, Ikeda Tomiki

    MOLECULAR CRYSTALS AND LIQUID CRYSTALS   478   1015 - 1025   2007

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    DOI: 10.1080/15421400701680911

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  • Synthesis of uniquely branched polyethylene by anilinonaphthoquinone ligated nickel complex activated with tris(pentafluorophenyl)borane Reviewed

    Mitsuhiro Okada, Yuushou Nakayama, Tomiki Ikeda, Takeshi Shiono

    MACROMOLECULAR RAPID COMMUNICATIONS   27 ( 17 )   1418 - 1423   2006.9

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    DOI: 10.1002/marc.200600335

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  • Propene Polymerization by ansa-Fluorenylamidodimethyltitanium Activated with SiO2-Supported Modified Methylalminoxane Reviewed

    Takeshi Shiono, Takashi Matsumae, Kei Nishii, Tomiki Ikeda

    PROGRESS IN OLEFIN POLYMERIZATION CATALYSTS AND POLYOLEFIN MATERIALS, PROCEEDINGS OF THE FIRST ASIAN POLYOLEFIN WORKSHOP   161   241 - 244   2006

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  • Surface relief grating couplers using azobenzene liquid-crystalline polymer films Reviewed

    Chong-Uk Bang, Atsushi Shishido, Tomiki Ikeda, Hideo Kurihara

    MOLECULAR CRYSTALS AND LIQUID CRYSTALS   458   149 - 159   2006

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    DOI: 10.1080/15421400600932603

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  • Preparation and photoinduced bending behavior of crosslinked azobenzene liquid-crystalline polymer fibers

    Taiki Yoshino, Jun-Ichi Mamiya, Motoi Kinoshita, Yanlei Yu, Tomiki Ikeda

    Polymer Preprints, Japan   55 ( 1 )   1737   2006

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  • Photoinduced alignment of nanocylinders in an amphiphilic diblock liquid-crystalline copolymer by supramolecular cooperative motions

    Haifeng Yu, Atsushi Shishido, Tomokazu Iyoda, Tomiki Ikeda

    Polymer Preprints, Japan   55 ( 2 )   3996   2006

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  • Control of photoinduced bending direction of crosslinked azobenzene liquid-crystalline polymer fibers

    Taiki Yoshino, Jun-Ichi Mamiya, Motoi Kinoshita, Yanlei Yu, Tomiki Ikeda

    Polymer Preprints, Japan   55 ( 2 )   3831 - 3832   2006

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  • Effect of alignment on photoinduced bending behavior of crosslinked azobenzene liquid-crystalline polymer films with hybrid alignment

    Mizuho Kondo, Jun-Ichi Mamiya, Motoi Kinoshita, Yanlei Yu, Tomiki Ikeda

    Polymer Preprints, Japan   55 ( 1 )   1738   2006

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  • Effect of structures of mesogenic groups in azotolane liquid-crystalline polymers on photoresponsive behavior

    Kunihiko Okano, Atsushi Shishido, Tomiki Ikeda

    Polymer Preprints, Japan   55 ( 1 )   1781   2006

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  • Synthesis of liquid-crystalline block copolymers containing an azobenzene moiety by an atom transfer radical polymerization (ATRP) method and their optical properties

    Yumiko Naka, Haifeng Yu, Jun-Ichi Mamiya, Motoi Kinoshita, Atsushi Shishido, Tomokazu Iyoda, Tomiki Ikeda

    Polymer Preprints, Japan   55 ( 1 )   1780   2006

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  • Preparation and photoresponsive behavior of crosslinked liquid-crystalline polymers with hydrogen bonding

    Akira Yoshitake, Jun-Ichi Mamiya, Motoi Kinoshita, Yanlei Yu, Tomiki Ikeda

    Polymer Preprints, Japan   55 ( 1 )   1739   2006

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  • Fabrication of polymer particles containing tolane moieties by a soap-free emulsion polymerization method

    Sota Tonouchi, Atsushi Shishido, Tomiki Ikeda

    Polymer Preprints, Japan   55 ( 1 )   1485   2006

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  • Optically anisotropic microlenses formed by liquid crystals doped with a crosslinkable oligothiophene

    Michitsugu Yagi, Masahiro Yaegashi, Motoi Kinoshita, Atsushi Shishido, Tomiki Ikeda

    Polymer Preprints, Japan   55 ( 1 )   1783   2006

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  • Formation of holographic gratings in azobenzene liquid-crystalline polymer films with a thienylacetylene moiety

    Yu Hachisuka, Kunihiko Okano, Atsushi Shishido, Tomiki Ikeda

    Polymer Preprints, Japan   55 ( 1 )   1782   2006

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  • Substituent effects of tert-butyl groups on fluorenyl ligand in syndiospecific living polymerization of propylene with ansa-fluorenylamidodimethyltitanium complex Reviewed

    ZG Cai, T Ikeda, M Akita, T Shiono

    MACROMOLECULES   38 ( 20 )   8135 - 8139   2005.10

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    DOI: 10.1021/ma050898i

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  • Evaluation of photoinduced change in refractive index of a polymer film doped with an azobenzene liquid crystal by means of a prism-coupling method Reviewed

    H Kurihara, A Shishido, T Ikeda

    JOURNAL OF APPLIED PHYSICS   98 ( 8 )   2005.10

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    DOI: 10.1063/1.2076432

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  • Morphology control of oxadiazole compounds by introduction of amine moieties Reviewed

    H Mochizuki, T Hasui, T Ikeda

    JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS BRIEF COMMUNICATIONS & REVIEW PAPERS   44 ( 1B )   485 - 490   2005.1

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    DOI: 10.1143/JJAP.44.485

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  • Photoinduced change in birefringence and optical switching at near-infrared region based on photochemical phase transition of azobenzene liquid crystals Reviewed

    H Kurihara, A Shishido, T Ikeda, O Tsutsumi, T Shiono

    MOLECULAR CRYSTALS AND LIQUID CRYSTALS   441   173 - 184   2005

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    DOI: 10.1080/154214091009707

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  • Photoinduced alignment behavior of poly(alkyl methacrylate)s containing an azobenzene moiety in the side chain Reviewed

    HB Cha, A Shishido, T Ikeda, T Shiono

    MOLECULAR CRYSTALS AND LIQUID CRYSTALS   443   201 - 209   2005

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    DOI: 10.1080/15421400500253712

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  • Effects of intensity of actinic light and temperature on photochemical phase transition of azobenzene liquid crystals probed by a near-infrared laser beam Reviewed

    H Kurihara, A Shishido, O Tsutsumi, T Shiono, T Ikeda

    MOLECULAR CRYSTALS AND LIQUID CRYSTALS   443   229 - 238   2005

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    DOI: 10.1080/15421400500249017

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  • Photoresponsive behavior and photochemical phase transition of amphiphilic diblock liquid-crystalline copolymer Reviewed

    HF Yu, T Iyoda, K Okano, A Shishido, T Ikeda

    MOLECULAR CRYSTALS AND LIQUID CRYSTALS   443   191 - 199   2005

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    DOI: 10.1080/15421400500253688

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  • Polarized OLED using liquid-crystalline polymers containing OXD and Cz moieties in the same side chain

    Yunmi Nam, Motoi Kinoshita, Tomiki Ikeda

    Polymer Preprints, Japan   54 ( 1 )   1391   2005

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  • Photoresponsive behavior of azobenzene liquid-crystalline elastomer films containing oxyethylene spacers

    Mizuho Kondo, Jun-Ichi Mamiya, Motoi Kinoshita, Yanlei Yu, Tomiki Ikeda

    Polymer Preprints, Japan   54 ( 2 )   3754 - 3755   2005

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  • Formation of polarization gratings based on bragg diffraction in an azobenzene polymer film

    Makoto Ishiguro, Atsushi Shishido, Tomiki Ikeda

    Polymer Preprints, Japan   54 ( 1 )   1316   2005

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  • Change in refractive index of azobenzene liquid-crystalline polymer detected by prism coupling method

    Hideo Kurihara, Atsushi Shishido, Tomiki Ikeda

    Polymer Preprints, Japan   54 ( 1 )   1315   2005

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  • Appearance of optical anisotropy induced by photopolymerization of liquid-crystalline monomer in restricted geometries

    Koji Sasaki, Rieko Yamamoto, Atsushi Shishido, Tomiki Ikeda

    Polymer Preprints, Japan   54 ( 1 )   1308   2005

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  • Design and synthesis of polymer bearing a 2,5-diarylthiazole moiety in the side chain directed to organic EL materials

    Junichi Shikuma, Atsunori Mori, Motoi Kinoshita, Tomiki Ikeda

    Polymer Preprints, Japan   54 ( 1 )   1693   2005

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  • Distinct molecular alignment induced by holographic photopolymerization of liquid-crystalline monomers

    Koji Sasaki, Atsushi Shishido, Tomiki Ikeda

    Polymer Preprints, Japan   54 ( 2 )   4296 - 4297   2005

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  • Two dimensional periodic polymer structures fabricated by holographic photopolymerization

    Atsushi Shishido, Koji Sasaki, Rieko Yamamoto, Tomiki Ikeda

    Polymer Preprints, Japan   54 ( 1 )   28 - 30   2005

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  • Polarization holographic gratings based on bragg diffraction in azobenzene polymer films

    Makoto Ishiguro, Atsushi Shishido, Tomiki Ikeda

    Polymer Preprints, Japan   54 ( 2 )   4408 - 4409   2005

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  • Holographic multiple data storage based on bragg diffraction of copolymer films containing an azobenzene moiety in the side chain

    Aya Saishoji, Atsushi Shishido, Tomiki Ikeda

    Polymer Preprints, Japan   54 ( 2 )   4406 - 4407   2005

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  • Branched structure of polyethylene produced with anilinonaphthoquinone- based nickel catalysts

    Mitsuhiro Okada, Takeshi Shiono, Tomiki Ikeda

    Polymer Preprints, Japan   54 ( 1 )   274   2005

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  • Ethene-norbornene copolymer with high norbornene content produced by ansa-fluorenylamidodimethyltitanium complex using a suitable activator Reviewed

    T Hasan, T Ikeda, T Shiono

    MACROMOLECULES   37 ( 23 )   8503 - 8509   2004.11

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    DOI: 10.1021/ma048492d

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  • Dynamic holographic polymer dispersed liquid crystals. Reviewed

    AM Urbas, J Klosterman, Tondiglia, V, LV Natarajan, RL Sutherland, N Tabirian, T Ikeda, TJ Bunning

    TUNING THE OPTICAL RESPONSE OF PHOTONIC BANDGAP STRUCTURES   5511   18 - 25   2004

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    DOI: 10.1117/12.560014

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  • Large optical torque enhancement by oligothiophene dye in a nematic liquid crystal host Reviewed

    T. Kosa, P. Palffy-Muhoray, H. Zhang, T. Ikeda

    Molecular Crystals and Liquid Crystals   421   107 - 115   2004

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    DOI: 10.1080/15421400490501581

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  • Effect of electrolytes on driving voltages of electroluminescent devices using liquid-crystalline matrices Reviewed

    H Mochizuki, M Kawamoto, T Ikeda

    JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS   42 ( 12 )   7366 - 7367   2003.12

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    DOI: 10.1143/JJAP.42.7366

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  • Additive effect of triphenylphosphine on the living polymerization of 1,3-butadiene with a cobalt dichloride-methylaluminoxane catalytic system Reviewed

    DCD Nath, T Shiono, T Ikeda

    MACROMOLECULAR CHEMISTRY AND PHYSICS   204 ( 16 )   2017 - 2022   2003.11

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    DOI: 10.1002/macp.200350052

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  • Emission behavior of molecularly doped electroluminescent devices using liquid-crystalline matrices Reviewed

    H Mochizuki, T Kubota, M Kawamoto, T Ikeda

    THIN SOLID FILMS   438   294 - 300   2003.8

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    DOI: 10.1016/S0040-6090(03)00733-8

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  • Side-chain polymer liquid crystals containing oxadiazole and amine moieties with carrier-transporting abilities for single-layer light-emitting diodes Reviewed

    M Kawamoto, H Mochizuki, A Shishido, O Tsutsumi, T Ikeda, B Lee, Y Shirota

    JOURNAL OF PHYSICAL CHEMISTRY B   107 ( 21 )   4887 - 4893   2003.5

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    DOI: 10.1021/jp0215872

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  • Polymerization of 1,3-butadiene by cobalt dichloride activated with various methylaluminoxanes Reviewed

    DCD Nath, T Shiono, T Ikeda

    APPLIED CATALYSIS A-GENERAL   238 ( 2 )   193 - 199   2003.1

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  • Highly efficient formation of holographic gratings in polymer liquid crystals

    K Okano, A Shishido, O Tsutsumi, T Shiono, T Ikeda

    LIQUID CRYSTALS VII   5213   139 - 146   2003

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  • Highly Efficient Holographic Materials Based on Polymer Liquid Crystals.

    Kunihiko Okano, Atsushi Shishido, Osamu Tsutsumi, Takeshi Shiono, Tomiki Ikeda

    J. Nonlinear Opt. Phys. Mater.   12   539-546   2003

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  • Photoresponsive behavior of azobenzene liquid-crystalline gels Reviewed

    Makoto Nakano, Yanlei Yu, Atsushi Shishido, Osamu Tsutsumi, Akihiko Kanazawa, Takeshi Shiono, Tomiki Ikeda

    Molecular Crystals and Liquid Crystals   398   1 - 9   2003

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    DOI: 10.1080/15421400390220827

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  • Supporting effects of methylaluminoxane on propene polymerization with an alkyltitanium complex Reviewed

    H Hagimoto, T Shiono, T Ikeda

    SCIENCE AND TECHNOLOGY IN CATALYSIS 2002   145   129 - 132   2003

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  • Living polymerization of norbornene via vinyl addition with ansa-fluorenylamidodimethyltitanium complex Reviewed

    T Hasan, K Nishii, T Shiono, T Ikeda

    MACROMOLECULES   35 ( 24 )   8933 - 8935   2002.11

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    DOI: 10.1021/ma025586j

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  • Living nature of propene polymerization with ansa-(cyclopentadienylamido)dimethyltitanium derivatives using MAO as cocatalyst

    Future Technologies for Polyolefin and Olefin Polymerization Catalysis= Technology and Education Publishers= Tokyo   280 - 285   2002.4

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  • Photochemical Modulation of Alignment of Liquid Crystals and Photonic Applications.

    Osamu Tsutsumi, Tomiki Ikeda

    Curr. Opin. Solid State Mat. Sci.   6   563-568   2002

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  • Optically switchable liquid crystals containing azobenzene chromophobes

    Tomiki Ikeda, Atsushi Shishido, Osamu Tsutsumi, Akihiko Kanazawa

    American Chemical Society, Polymer Preprints, Division of Polymer Chemistry   43 ( 1 )   151 - 152   2002

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  • Syndiospecific living polymerization of propene with (t-BuNSiMe2Flu)TiMe2 Using MAO as Cocatalyst Reviewed

    Macromolecules   34 ( 10 )   3142 - 3145   2001.4

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  • Electroluminescent behavior of oxadiazole derivatives in liquid-crystalline media Reviewed

    Hiroyuki Mochizuki, Takahiro Hasui, Osamu Tsutsumi, Akihiko Kanazawa, Takeshi Shiono, Tomiki Ikeda, Chihaya Adachi, Yoshio Taniguchi, Yasuhiko Shirota

    Molecular Crystals and Liquid Crystals Science and Technology Section A: Molecular Crystals and Liquid Crystals   365   129 - 138   2001

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    DOI: 10.1080/10587250108025289

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  • Liquid Crystalline Coumarin Polymers.Ⅱ: Photo-Chemistry of Side-Group Liquid Crystalline Polymers with Coumarin Moieties

    YanQing Tian, Eiichi Akiyama, Yu Nagase, Akihiko Kanazawa, Osamu Tsutsumi, Tomiki Ikeda

    Transactions of the Material Research Society of Japan   25 ( 4 )   1091 - 1094   2000

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  • Novel Class of Ionic Metallomesogens without Organic Ligands: Thermotropic Liquid-Crystalline Behavior of Tetrachlorometalate Salts and Distinct Polymorphic Transition in Smectic A Phases

    Akihiko Kanazawa, Tomiki Ikeda, Yu Nagase

    Chemistry of Materials   12 ( 12 )   3776 - 3782   2000

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  • Photoinduced orientation of azobenzene liquid crystalline side chain homopolymers Reviewed

    J Liu, QJ Zhang, YL Wu, T Ikeda

    ORGANIC PHOTONIC MATERIALS AND DEVICES   3623   224 - 231   1999

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  • Optical switching by means of liquid crystals with donor-acceptor azobenzenes

    Osamu Tsutsumi, Tomiki Ikeda

    American Chemical Society, Polymer Preprints, Division of Polymer Chemistry   39 ( 2 )   270 - 271   1998.8

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  • Photoinduced alignment of polymer liquid crystals containing azobenzene moieties in the side-chain. 3. Effect of spacer length of the azobenzene units on alignment behavior Reviewed

    Macromolecules   31 ( 14 )   4457 - 4463   1998.4

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  • Copolymerization of poly(propylene) macromonomer with ethylene by (tert-butanamide)dimethyl(tetramethyl-eta(5)-cyclopentadienyl)silanetitanium dichloride methylaluminoxane catalyst Reviewed

    T Shiono, Y Moriki, T Ikeda, K Soga

    MACROMOLECULAR CHEMISTRY AND PHYSICS   198 ( 10 )   3229 - 3237   1997.10

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  • Charge transfer interaction in liquid-crystalline materials and their application to photonics

    Tomiki Ikeda, Osamu Tsutsumi

    American Chemical Society, Polymer Preprints, Division of Polymer Chemistry   37 ( 1 )   121 - 122   1996.3

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  • Photochemical Control of Properties of Ferroelectric Liquid Crystals(3)Photochemical Control of Spontaneous Polarization and Electrooptic Effect. Reviewed

    T. Sasaki, T. Ikeda

    J. Phys. Chem.   99   13013   1995

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  • PHOTOCHEMICAL CONTROL OF SWITCHING BEHAVIORS OF FERROELECTRIC POLYMER LIQUID-CRYSTALS - POLY(2-METHYLBUTYL 4'-(10-ACRYLOYLOXYDECYLOXY)BIPHENYL-4-CARBOXYLATE) Reviewed

    T IKEDA, O ZUSHI, T SASAKI, K ICHIMURA, H TAKEZOE, A FUKUDA, KAW SKARP

    MOLECULAR CRYSTALS AND LIQUID CRYSTALS   225   67 - &   1993

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  • Orientation control and photophysical behaviors in LB films of long-chain derivative of amino acid containing aromatic ring Reviewed

    Hiroo Nakahara, Hideyuki Endo, Kiyoshige Fukuda, Tomiki Ikeda, Masahiko Sisido

    Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals   218 ( 1 )   177 - 182   1992.6

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    DOI: 10.1080/10587259208047036

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  • TIME-RESOLVED OBSERVATION OF ISOTHERMAL PHASE-TRANSITION OF LIQUID-CRYSTALS INDUCED BY PHOTOISOMERIZATION OF AZOBENZENE DOPANT Reviewed

    S KURIHARA, T IKEDA, T SASAKI, HB KIM, S TAZUKE

    MOLECULAR CRYSTALS AND LIQUID CRYSTALS   195   251 - 263   1991

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  • PERSISTENCE OF ORDERING IN 4-NORMAL-PENTYL-4'-CYANOBIPHENYL ABOVE THE NEMATIC ISOTROPIC TRANSITION AS DETECTED BY PICOSECOND TIME-RESOLVED FLUORESCENCE SPECTROSCOPY Reviewed

    T IKEDA, S KURIHARA, S TAZUKE

    LIQUID CRYSTALS   7 ( 5 )   749 - 752   1990.5

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  • EFFECT OF STRUCTURE OF PHOTORESPONSIVE MOLECULES ON PHOTOCHEMICAL PHASE-TRANSITION OF LIQUID-CRYSTALS .4. PHOTOCHEMICAL PHASE-TRANSITION BEHAVIORS OF PHOTOCHROMIC AZOBENZENE GUEST POLYMER LIQUID-CRYSTAL HOST MIXTURES Reviewed

    T IKEDA, T MIYAMOTO, S KURIHARA, S TAZUKE

    MOLECULAR CRYSTALS AND LIQUID CRYSTALS   188   223 - 233   1990

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  • PHOTOCHEMICALLY INDUCED ISOTHERMAL PHASE-TRANSITION IN LIQUID-CRYSTALS - EFFECT OF INTERACTION OF PHOTORESPONSIVE MOLECULES WITH MATRIX MESOGENS Reviewed

    S KURIHARA, T IKEDA, S TAZUKE

    MOLECULAR CRYSTALS AND LIQUID CRYSTALS   178   117 - 132   1990

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  • EFFECT OF STRUCTURE OF PHOTORESPONSIVE MOLECULES ON PHOTOCHEMICAL PHASE-TRANSITION OF LIQUID-CRYSTALS .3. PHOTOCHEMICAL PHASE-TRANSITION BEHAVIORS OF PHOTOCHROMIC AZOBENZENE GUEST ESTER HOST MIXTURES Reviewed

    T IKEDA, T MIYAMOTO, S KURIHARA, S TAZUKE

    MOLECULAR CRYSTALS AND LIQUID CRYSTALS   188   207 - 222   1990

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  • Interaction of polymeric drugs with biomembranes Reviewed

    T. Ikeda, S. Tazuke

    Membrane   7 ( 4 )   203 - 213   1982

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    DOI: 10.5360/membrane.7.203

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Books

  • 液晶を操る光化学 光化学協会編「光化学の驚異」第5章

    講談社ブルーバックス  2006 

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  • 高分子液晶 国武豊喜監修「ナノマテリアルハンドブック」

    エヌ・ティー・エス  2005 

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  • ナノインテリジェント(液晶)材料 日本化学会編第5版実験化学講座28「ナノテクノロジーの化学」3デバイス・応用「新機能ナノ材料」

    丸善  2005 

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  • Liquid-Crystalline Polymers

    NTS  2005 

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  • Nano Intelligent Liquid-Crystalline Materials

    Maruzen  2005 

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  • アゾベンゼン液晶ゲルアクチュエーター

    エヌ・ティー・エス  2004 

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  • フォトクロミズムを利用する光応答性高分子液晶材料

    エヌ・ティー・エス  2004 

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  • 高分子アゾベンゼン液晶のフォトニクス-ホログラムと光アクチュエータへの応用

    エヌ・ティー・エス  2004 

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  • Liquid Crystal Photonics: Opto-Photochemical Effects in Photoresponsive Liquid Crystals

    Wiley-VCH  2001 

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  • Liquid Crystal Photonics: Opto-Photochemical Effects in Photoresponsive Liquid Crystals

    Wiley-VCH  2001 

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MISC

  • Photomobile polymer materials: Towards light-driven plastic motors

    Munenori Yamada, Mizuho Kondo, Jun-ichi Mamiya, Yanlei Yu, Motoi Kinoshita, Christopher J. Barrett, Tomiki Ikeda

    ANGEWANDTE CHEMIE-INTERNATIONAL EDITION   47 ( 27 )   4986 - 4988   2008

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  • Photomechanics of liquid-crystalline elastomers and other polymers

    Tomiki Ikeda, Jun-ichi Mamiya, Yanlei Yu

    ANGEWANDTE CHEMIE-INTERNATIONAL EDITION   46 ( 4 )   506 - 528   2007

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  • Photomodulation of liquid crystal orientations for photonic applications

    Tomiki Ikeda

    Journal of Materials Chemistry   13 ( 9 )   2037 - 2057   2003.9

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    DOI: 10.1039/b306216n

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  • Anisotropic bending and unbending behavior of azobenzene liquid-crystalline gels by light exposure

    T Ikeda, M Nakano, YL Yu, O Tsutsumi, A Kanazawa

    ADVANCED MATERIALS   15 ( 3 )   201 - +   2003.2

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  • Photomodulation of liquid crystal orientations for photonic applications

    T Ikeda

    JOURNAL OF MATERIALS CHEMISTRY   13 ( 9 )   2037 - 2057   2003

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    DOI: 10.1039/b306216n

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  • Photomechanics: directed bending of a polymer film by light. International journal

    Yanlei Yu, Makoto Nakano, Tomiki Ikeda

    Nature   425 ( 6954 )   145 - 145   2003

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    Polymer solutions and solids that contain light-sensitive molecules can undergo photo-contraction, whereby light energy is converted into mechanical energy. Here we show that a single film of a liquid-crystal network containing an azobenzene chromophore can be repeatedly and precisely bent along any chosen direction by using linearly polarized light. This striking photomechanical effect results from a photoselective volume contraction and may be useful in the development of high-speed actuators for microscale or nanoscale applications, for example in microrobots in medicine or optical microtweezers.

    DOI: 10.1038/425145a

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  • OPTICAL SWITCHING AND IMAGE STORAGE BY MEANS OF AZOBENZENE LIQUID-CRYSTAL FILMS

    T IKEDA, O TSUTSUMI

    SCIENCE   268 ( 5219 )   1873 - 1875   1995.6

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  • Optical switching and image storage by means of azobenzene liquid-crystal films

    Tomiki Ikeda, Osamu Tsutsumi

    Science   268 ( 5219 )   1873 - 1875   1995

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  • PHOTOCHEMICAL SWITCHING OF POLARIZATION IN FERROELECTRIC LIQUID-CRYSTAL FILMS

    T IKEDA, T SASAKI, K ICHIMURA

    NATURE   361 ( 6411 )   428 - 430   1993.2

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  • Photochemical switching of polarization in ferroelectric liquid-crystal films

    Tomiki Ikeda, Takeo Sasaki, Kunihiro Ichimura

    Nature   361 ( 6411 )   428 - 430   1993

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    DOI: 10.1038/361428a0

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  • Two-photon actuation of crosslinked liquid-crystalline polymers utilizing energy transfer system

    Shota Sasaki, Toru Ube, Kenji Katayama, Masayasu Muramatsu, Hiroshi Miyasaka, Tomiki Ikeda

    Molecular Crystals and Liquid Crystals   662 ( 1 )   53 - 60   2018.2

  • Foreword

    Lee-Soon Park, Yanlei Yu, Jianhua Zhang, Tomiki Ikeda

    MOLECULAR CRYSTALS AND LIQUID CRYSTALS   644 ( 1 )   2017

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  • 20th International Symposium on Advanced Display Materials and Devices (ADMD2016) Foreword

    Jianhua Zhang, Tomiki Ikeda, Lee-Soon Park, Yanlei Yu

    MOLECULAR CRYSTALS AND LIQUID CRYSTALS   651 ( 1 )   1 - 1   2017

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  • Foreword

    Tomiki Ikeda, Lee-Soon Park, Yanlei Yu, Kiyoshi Kanie

    MOLECULAR CRYSTALS AND LIQUID CRYSTALS   617 ( 1 )   1 - 1   2015.8

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  • Special Issue: 7th Italian-Japanese Workshop on Liquid Crystals and 10th National Meeting of the Italian Liquid Crystal Society Foreword

    Antonio d'Alessandro, Tomiki Ikeda, Paolo Pasini, Claudio Zannoni

    MOLECULAR CRYSTALS AND LIQUID CRYSTALS   614 ( 1 )   1 - 1   2015.6

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  • MATERIALS SCIENCE A superelastic organic crystal

    Tomiki Ikeda, Toru Ube

    NATURE   511 ( 7509 )   300 - 301   2014.7

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  • Molecular dynamics in azobenzene liquid crystal polymer films measured by time-resolved techniques

    T. Fujii, S. Kuwahara, K. Katayama, K. Takado, T. Ube, T. Ikeda

    PHYSICAL CHEMISTRY CHEMICAL PHYSICS   16 ( 22 )   10485 - 10490   2014

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  • Fabrication of photomobile polymer materials with a bilayer structure and their photoresponsive behavior

    Tomiki Ikeda

    ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY   245   2013.4

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  • Photocontrollable Liquid-Crystalline Actuators

    Haifeng Yu, Tomiki Ikeda

    ADVANCED MATERIALS   23 ( 19 )   2149 - 2180   2011.5

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    DOI: 10.1002/adma.201100131

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  • Photomobile Polymer Materials : Amplification of Changes at a Molecular Level to Macroscopic Deformation

    NAKA Yumiko, IKEDA Tomiki

    Photochemistry   41 ( 1 )   3 - 9   2010.4

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  • Photoinduced Reorientation of Dye-Doped Liquid Crystals and Its Application to Microoptical Elements for Self-Emitting Devices Reviewed

    Motoi Kinoshita, Tomohiro Kobayashi, Keisuke Takano, Yunmi Nam, Tomiki Ikeda

    LIQUID CRYSTALS XIV   7775   2010

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  • Photomobile polymer materials

    Function & materials   29 ( 10 )   43 - 49   2009.10

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  • Nano self-assembled photochromic liquid-crystalline polymers

    60 ( 6 )   419 - 424   2009.6

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  • Photomobile polymer materials

    Jun-Ichi Mamiya, Munenori Yamada, Yumiko Naka, Mizuho Kondo, Tomiki Ikeda

    Kobunshi Ronbunshu   66 ( 3 )   79 - 87   2009.3

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    DOI: 10.1295/koron.66.79

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  • Photomobile polymer materials

    Jun-Ichi Mamiya, Munenori Yamada, Yumiko Naka, Mizuho Kondo, Tomiki Ikeda

    Kobunshi Ronbunshu   66 ( 3 )   79 - 87   2009.3

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    DOI: 10.1295/koron.66.79

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  • Rewritable Bragg Holograms of Azobenzene Polymers with Fast Response Reviewed

    Shishido Atsushi, Cha Hyo-Bok, Ikeda Tomiki

    LIQUID CRYSTALS XIII   7414   2009

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  • Photoresponsive Behavior of Azotolane Liquid Crystals

    Kunihiko Okano, Tomiki Ikeda

    Proceeding of SPIE   7232   723209 - 1   2009

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  • Highly Birefringent Liquid-Crystalline Polymers for Efficient Light Modulation

    OKANO Kunihiko, IKEDA Tomiki

    Journal of the Japanese Liquid Crystal Society   12 ( 4 )   269 - 278   2008.10

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  • Preface

    Yue Zhao, Tomiki Ikeda

    Smart Light-Responsive Materials: Azobenzene-Containing Polymers and Liquid Crystals   xiii - xv   2008.8

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    DOI: 10.1002/9780470439098

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  • Light-Driven Soft Actuator Materials Based on Liquid-Crystalline Polymers Reviewed

    Yanlei Yu, Ruoyuan Yin, Jixiang Xu, Futao Cheng, Mizuho Kondo, Tomiki Ikeda

    LIQUID CRYSTAL XII   7050   2008

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  • Is chemical crosslinking necessary for the photoinduced bending of polymer films?

    Jun-ichi Mamiya, Akira Yoshitake, Mizuho Kondo, Yanlei Yu, Tomiki Ikeda

    JOURNAL OF MATERIALS CHEMISTRY   18 ( 1 )   63 - 65   2008

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  • Photoresponsive Liquid Crystals

    IKEDA Tomiki

    Journal of the Japanese Liquid Crystal Society   11 ( 3 )   207 - 214   2007.7

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  • Formation of Bragg gratings with large angular multiplicity by means of the photoinduced reorientation of azobenzene copolymers

    Aya Saishoji, Daisuke Sato, Atsushi Shishido, Tomiki Ikeda

    LANGMUIR   23 ( 1 )   320 - 326   2007.1

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  • Bragg-type polarization gratings formed in thick polymer films containing azobenzene and tolane moieties

    Makoto Ishiguro, Daisuke Sato, Atsushi Shishido, Tomiki Ikeda

    LANGMUIR   23 ( 1 )   332 - 338   2007.1

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  • 偏光制御による光駆動高分子 (特集 偏光の新展開)

    近藤 瑞穂, 池田 富樹

    O plus E   29 ( 1 )   53 - 59   2007.1

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  • Photo-mechanical effects in azobenzene-containing soft materials

    Christopher J. Barrett, Jun-ichi Mamiya, Kevin G. Yager, Tomiki Ikeda

    SOFT MATTER   3 ( 10 )   1249 - 1261   2007

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    DOI: 10.1039/b705619b

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  • Photomechanical effects of ferroelectric liquid-crystalline elastomers containing azobenzene chromophores

    Yanlei Yu, Taketo Maeda, Jun-ichi Mamiya, Tomiki Ikeda

    ANGEWANDTE CHEMIE-INTERNATIONAL EDITION   46 ( 6 )   881 - 883   2007

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  • 偏光制御による光駆動高分子

    近藤瑞穂, 池田富樹

    O plus E   29   11 - 17   2007

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  • Azotolane liquid-crystalline polymers: Huge change in birefringence by photoinduced alignment change

    Kunihiko Okano, Osamu Tsutsumi, Atsushi Shishido, Tomiki Ikeda

    Journal of the American Chemical Society   128 ( 48 )   15368 - 15369   2006.12

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  • Macroscopic parallel nanocylinder array fabrication using a simple rubbing technique

    Haifeng Yu, Jingze Li, Tomiki Ikeda, Tomokazu Iyoda

    ADVANCED MATERIALS   18 ( 17 )   2213 - +   2006.9

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  • White emission from liquid-crystalline copolymers containing oxadiazole moieties in the side chain

    Masuki Kawamoto, Takuji Tsukamoto, Motoi Kinoshita, Tomiki Ikeda

    APPLIED PHYSICS LETTERS   89 ( 12 )   121920/1-121920/3   2006.9

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  • Photoinduced alignment of nanocylinders by supramolecular cooperative motions

    Haifeng Yu, Tomokazu Iyoda, Tomiki Ikeda

    JOURNAL OF THE AMERICAN CHEMICAL SOCIETY   128 ( 34 )   11010 - 11011   2006.8

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  • One- and two-photon induced phase transition behavior of nematic liquid crystals containing bis-styryl benzene as a photoresponsive chromophore

    Osamu Tsutsumi, Asami Ohashi, Tomiki Ikeda, Seth R. Marder, Joseph W. Perry

    THIN SOLID FILMS   509 ( 1-2 )   118 - 122   2006.6

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  • Emission behavior of electroluminescent device using a liquid crystal and an electrolyte

    H Mochizuki, T Ikeda

    THIN SOLID FILMS   499 ( 1-2 )   147 - 152   2006.3

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  • An azotolane liquid-crystalline polymer exhibiting extremely large birefringence and its photoresponsive behavior

    Kunihiko Okano, Atsushi Shishido, Tomiki Ikeda

    Advanced Materials   18 ( 4 )   523 - 527   2006.2

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  • Stereospecific polymerization of propylene with group 4 ansa-fluorenylamidodimethyl complexes

    Kei Nishii, Hideaki Hagihara, Tomiki Ikeda, Munetaka Akita, Takeshi Shiono

    Journal of Organometallic Chemistry   691   193 - 201   2006.1

  • Photochemical phase transition behavior of highly birefringent azotolane liquid-crystalline polymer films: Effects of the position of the tolane group and the donor-acceptor substituent in the mesogen

    K Okano, A Shishido, T Ikeda

    MACROMOLECULES   39 ( 1 )   145 - 152   2006.1

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  • A Simple Formulation for Rewritable Bragg Holograms with Angle and Polarization Multiplicity

    T. Ikeda, A. Shishido

    Proc. SPIE   6332   63320S/1-63320S/5   2006

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  • Soft actuators based on liquid-crystalline elastomers

    Yanlei Yu, Tomiki Ikeda

    ANGEWANDTE CHEMIE-INTERNATIONAL EDITION   45 ( 33 )   5416 - 5418   2006

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  • How does the initial alignment of mesogens affect the photoinduced bending behavior of liquid-crystalline elastomers?

    M Kondo, YL Yu, T Ikeda

    ANGEWANDTE CHEMIE-INTERNATIONAL EDITION   45 ( 9 )   1378 - 1382   2006

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  • Photochemical Phase Transition Behavior of Highly Birefringent Azo-Tolane Liquid-Crystalline Polymer Films: Effects of the Position of the Tolane Group and the Donor-Acceptor Substituent in the Mesogen

    K. Okano, A, Shishido T. Ikeda

    Macromolecules   39 ( 1 )   145 - 152   2006

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  • White Emission from Liquid-Crystalline Copolymers Containing Oxadiazole Moieties in the Side Chain

    M. Kawamoto, T, Tsukamoto, M, Kinoshita T. Ikeda

    Appl. Phys. Lett.   89   121920/1-121920/3   2006

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  • An Azotolane Liquid-Crystalline Polymer Exhibiting Extremely Large Birefringence and Its Photoresponsive Behavior

    K. Okano, A, Shishido T. Ikeda

    Adv. Mater.   18 ( 4 )   523 - 527   2006

  • Synthesis and spectroscopic properties of amphiphilic diblock copolymer bearing a 2,5-diarylthiazole moiety

    Junichi Shikuma, Kohtaro Osakada, Motoi Kinoshita, Tomiki Ikeda, Sadayuki Asaoka, Tomokazu Iyoda, Atsunori Mori

    Polymer Preprints, Japan   55 ( 1 )   1532   2006

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  • Surface Relief Grating Couplers Using Azobenzene Liquid-Crystalline Polymer Film

    C. -U. Bang, H. Kurihara, A, Shishido T. Ikeda

    Mol. Cryst. Liq. Cryst.   458   149 - 159   2006

  • Surface Relief Grating Couplers Using Azobenzene Liquid-Crystalline Polymer Film

    C. -U. Bang, H. Kurihara, A, Shishido T. Ikeda

    Mol. Cryst. Liq. Cryst.   458   149 - 159   2006

  • Novel amphiphilic diblock and triblock liquid-crystalline copolymers with well-defined structures prepared by atom transfer radical polymerization

    HF Yu, A Shishido, T Ikeda, T Iyoda

    MACROMOLECULAR RAPID COMMUNICATIONS   26 ( 20 )   1594 - 1598   2005.10

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  • PD18 Effect of Azobenzene Concentration on Photoinduced Bending Behavior of Liquid-Crystalline Elastomer with a Side-Chain Azobenzene Moiety

    SUGIMOTO Manabu, MAMIYA Jun-ichi, KINOSHITA Motoi, Yu Yanlei, IKEDA Tomiki

    ( 2005 )   429 - 430   2005.9

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  • 3C09 Effect of structures of mesogenic groups in azo-tolane liquid-crystalline polymers on photoresponsive behavior

    OKANO Kunihiko, SHISHIDO Atsushi, IKEDA Tomiki

    ( 2005 )   223 - 224   2005.9

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  • 3C07 Preparation and Photoresponsive Behavior of Liquid-Crystalline Polymers with Inverse Opal Photonic Crystal Structures

    ISHIKAWA Kentaro, SHISHIDO Atsushi, IKEDA Tomiki

    ( 2005 )   219 - 220   2005.9

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  • PD16 Synthesis and Photoresponsive Behavior of Azobenzene Liquid-Crystalline Polymers with a Thienylacetylene Moiety

    HACHISUKA Yu, OKANO Kunihiko, SHISHIDO Atsushi, IKEDA Tomiki

    ( 2005 )   425 - 426   2005.9

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  • 3C03 Preparation of Microlens by Photoinduced Reorientation in Oligothiophene-Doped Liquid Crystals

    YAEGASHI Masahiro, SHISHIDO Atsushi, IKEDA Tomiki

    ( 2005 )   211 - 212   2005.9

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  • 3C08 Change of selective reflection in azobenzene liquid-crystalline polymers containing a chiral moiety

    SATO Junya, KINOSHITA Motoi, IKEDA Tomiki

    ( 2005 )   221 - 222   2005.9

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  • 2C06 Formation of holographic gratings in a chiral nematic liquid-crystalline polymer

    NAKAHARA Kenichi, KINOSHITA Motoi, IKEDA Tomiki

    ( 2005 )   141 - 142   2005.9

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  • Enhancement of surface-relief gratings recorded on amphiphilic liquid-crystalline diblock copolymer by nanoscale phase separation

    HF Yu, K Okano, A Shishido, T Ikeda, K Kamata, M Komura, T Iyoda

    ADVANCED MATERIALS   17 ( 18 )   2184 - 2188   2005.9

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  • Photodeformable polymers: A new kind of promising smart material for micro- and nano-applications

    YL Yu, T Ikeda

    MACROMOLECULAR CHEMISTRY AND PHYSICS   206 ( 17 )   1705 - 1708   2005.9

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  • Effect of ester moieties in dye structures on photoinduced reorientation of dye-doped liquid crystals

    M Yaegashi, A Shishido, T Shiono, T Ikeda

    CHEMISTRY OF MATERIALS   17 ( 17 )   4304 - 4309   2005.8

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  • Charge carrier transport properties in polymer liquid crystals containing oxadiazole and amine moieties in the same side chain

    M Kawamoto, H Mochizuki, T Ikeda, H Iino, J Hanna

    JOURNAL OF PHYSICAL CHEMISTRY B   109 ( 19 )   9226 - 9230   2005.5

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  • Polymerization of propylene with [t-BuNSiMe(2)Ind]TiMe2-MAO catalyst systems

    K Nishii, T Ikeda, M Akita, T Shiono

    JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL   231 ( 1-2 )   241 - 246   2005.4

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  • Random copolymerization of propene and norbornene with ansa-fluorenylamidodimethyltitanium-based catalysts

    T Hasan, T Ikeda, T Shiono

    MACROMOLECULES   38 ( 4 )   1071 - 1074   2005.2

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  • Synthesis and Properties of Highly Birefringent Azo-Tolane Liquid-Crystalline Polymers: Effect of the Position of the Tolane Moiety in the Side Chain

    K. Okano, A, Shishido T, Shiono T. Ikeda

    Mol. Cryst. Liq. Cryst.   441   275 - 285   2005

  • Highly birefringent liquid-crystalline polymers for photonic applications: synthesis of liquid-crystalline polymers with side-chain azo-tolane mesogens and their holographic properties

    K Okano, A Shishido, O Tsutsumi, T Shiono, T Ikeda

    JOURNAL OF MATERIALS CHEMISTRY   15 ( 33 )   3395 - 3401   2005

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  • Preparation and characterization of azobenzene liquid-crystalline elastomer films with homeotropic alignment

    M Kondo, T Maeda, A Shishido, T Ikeda, YL Yu, M Nakano, T Shiono

    MOLECULAR CRYSTALS AND LIQUID CRYSTALS   441   297 - +   2005

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  • Precisely direction-controllable bending of cross-linked liquid-crystalline polymer films by light

    YL Yu, M Nakano, T Maeda, M Kondo, T Ikeda

    MOLECULAR CRYSTALS AND LIQUID CRYSTALS   436   1235 - 1244   2005

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  • Synthesis and properties of highly birefringent azo-tolane liquid-crystal line polymers: Effect of the position of the tolane moiety in the side chain

    K Okano, A Shishido, T Ikeda, T Shiono

    MOLECULAR CRYSTALS AND LIQUID CRYSTALS   441   275 - +   2005

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  • Charge Carrier Transport Properties in Polymer Liquid Crystals Containing Oxadiazole and Amine Moieties in the Same Side Chain

    M. Kawamoto, H. Mochizuki T. Ikeda, H. Iino, J. Hanna

    J. Phys. Chem. B.   109 ( 19 )   9226 - 9230   2005

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  • Synthesis and electroluminescent properties of liquid-crystalline polymers containing oxadiazole and carbazole moieties in the same side chain

    YM Nam, M Kinoshita, T Ikeda, M Kawamoto, T Shiono

    MOLECULAR CRYSTALS AND LIQUID CRYSTALS   443   95 - 104   2005

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  • Novel liquid-crystalline phenylene-thienylene co-oligorners for photoinduced reorientation of liquid crystals

    M Yaegashi, A Shishido, T Ikeda, T Shiono

    MOLECULAR CRYSTALS AND LIQUID CRYSTALS   441   201 - +   2005

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  • Photoinduced bending of polymer films Reviewed

    Tomiki Ikeda, Taketo Maeda, Mizuho Kondo, Yanlei Yu

    Proceedings of SPIE - The International Society for Optical Engineering   5947   1 - 8   2005

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    DOI: 10.1117/12.622440

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  • Side-chain liquid-crystalline polymers containing oxadiazole and amine moieties for organic light-emitting diode Reviewed

    Motoi Kinoshita, Masuki Kawamoto, Hiroyuki Mochizuki, Yunmi Nam, Tomiki Ikeda

    Proceedings of SPIE - The International Society for Optical Engineering   5936   1 - 8   2005

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    DOI: 10.1117/12.620795

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  • Photoinduced Change in Birefringence and Optical Switching at Near-Infrared Region Based on Photochemical Phase Transition of Azobenzene Liquid Crystals

    H. Kurihara, A. Shishido, O. Tsutsumi T, Shiono T. Ikeda

    Mol. Cryst. Liq. Cryst.   441   173 - 184   2005

  • Photoinduced Alignment Behavior of Poly(alkyl methacrylates) Containing Azobenzene Moiety in the Side Chain

    H. -B. Cha, A, Shishido T, Shiono T. Ikeda

    Mol. Cryst. Liq. Cryst.   443   201 - 209   2005

  • Effect of Intensity of Actinic Light and Temperature on Photochemical Phase Transition of Azobenzene Liquid Crystals Probed by a Near-Infrared Laser Beam

    H. Kurihara, A. Shishido, O. Tsutsumi T, Shiono T. Ikeda

    Mol. Cryst. Liq. Cryst.   443   229 - 238   2005

  • Effect of Intensity of Actinic Light and Temperature on Photochemical Phase Transition of Azobenzene Liquid Crystals Probed by a Near-Infrared Laser Beam

    H. Kurihara, A. Shishido, O. Tsutsumi T, Shiono T. Ikeda

    Mol. Cryst. Liq. Cryst.   443   229 - 238   2005

  • Photoinduced Alignment Behavior of Poly(alkyl methacrylates) Containing Azobenzene Moiety in the Side Chain

    H. -B. Cha, A, Shishido T, Shiono T. Ikeda

    Mol. Cryst. Liq. Cryst.   443   201 - 209   2005

  • Photoinduced Change in Birefringence and Optical Switching at Near-Infrared Region Based on Photochemical Phase Transition of Azobenzene Liquid Crystals

    H. Kurihara, A. Shishido, O. Tsutsumi T, Shiono T. Ikeda

    Mol. Cryst. Liq. Cryst.   441   173 - 184   2005

  • Photoresponsive Behavior and Photochemical Phase Transition of Amphiphilic Diblock Liquid-Crystalline Copolymer

    H. Yu, K. Okano, A, Shishido T, Ikeda K, Watanabe, T. Iyoda

    Mol. Cryst. Liq. Cryst.   443   191 - 199   2005

  • Photoresponsive Behavior and Photochemical Phase Transition of Amphiphilic Diblock Liquid-Crystalline Copolymer

    H. Yu, K. Okano, A, Shishido T, Ikeda K, Watanabe, T. Iyoda

    Mol. Cryst. Liq. Cryst.   443   191 - 199   2005

  • Synthesis and investigation of photophysical and photochemical properties of new side-group liquid crystalline polymers containing coumarin moieties

    Yanqing Tian, Eiichi Akiyama, Yu Nagase, Akihiko Kanazawa, Osamu Tsutsumi, Tomiki Ikeda

    Journal of Materials Chemistry   14 ( 24 )   3524 - 3531   2004.12

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    DOI: 10.1039/b408554j

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  • Alignment modulation of azobenzene-containing liquid crystal systems by photochemical reactions

    YL Yu, T Ikeda

    JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY C-PHOTOCHEMISTRY REVIEWS   5 ( 3 )   247 - 265   2004.12

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    DOI: 10.1016/j.jphotochemrev.2004.10.004

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  • Self-Assembled Molecular Aggregates of Rod-Like Organogelators Containing a Mesogen Moiety

    MAMIYA Jun-ichi, KATO Takashi, IKEDA Tomiki

    Technical report of IEICE. OPE   104 ( 333 )   29 - 32   2004.10

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    A mesogenic compound (1) with a syw-chiral carbonate moiety was synthesized. The self-assembly process of the azobenzene LC with a simple structure without hydrogen bonds or stacking of cholesterol was investigated. 1 shows excellent gelation properties for various organic solvents. The gelation ability of the compound is due to the formation of one-dimensional fibrous structures. The fibrous self-assembled structure was formed by the ribbon-like aggregation of 1 through the dipole-dipole interactions of the chiral carbonate moieties. Furthermore, the photoresponsive behavior of physicalorganogels formed by the azobenzene gelator was investigated.

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  • Electroluminescent Behavior of Liquid-Crystalline Materials Showing Bipolar Carrier-Transporting Properties

    KAWAMOTO Masuki, IKEDA Tomiki

    Technical report of IEICE. OPE   104 ( 333 )   17 - 21   2004.10

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    We designed and synthesized novel liquid-crystalline (LC) materials containing an oxadiazole moiety as an electron-transporting unit and an amine moiety as a hole-transporting unit in a single unit. The most significant characteristic of the LCs is to possess bipolar carrier-transporting abilities. Electroluminescent (EL) devices were fabricated with a simple configuration of ITO/LC/MgAg to demonstrate EL behavior. Furthermore, the polarized EL was observed due to self-assemblies of mesogenic chromophores. Especially we found that a rubbed semi-conducting polymer layer acts not only as a hole-injecting layer but also as an LC alignment layer.

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  • Highly efficient Ti-based catalyst systems for vinyl addition polymerization of norbornene

    T Hasan, T Ikeda, T Shiono

    MACROMOLECULES   37 ( 20 )   7432 - 7436   2004.10

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  • 1C11 Photoinduced Bending of Azobenzene Liquid-Crystalline Elastomer Films : Photoresponsive Behavior of a Homeotropically Aligned Film

    KONDO Mizuho, MAEDA Taketo, YU Yanlei, SHISHIDO Atsushi, SHIONO Takeshi, IKEDA Tomiki

    ( 2004 )   216 - 217   2004.9

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    Homeotropically aligned azobenzene liquid-crystalline elastomer (LCE) films were prepared and investigated in terms of the photoinduced bending behavior. Upon irradiation of UV light which induces photoisomerization of the azobebzene moieties, the film bent away from the UV light and reverted to the initial state when irradiated at visible light, contrary to the bending behavior of a homogeneous film. This can be explained by a different volume transformation.

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  • 1C15 Formation of Gratings by Holographic Photopolymerization of Ferroelectric Liquid-Crystalline Monomers

    IKEDA Koujiro, SHISHIDO Atsushi, SHIONO Takeshi, IKEDA Tomiki

    ( 2004 )   224 - 225   2004.9

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    Photopolymerization of ferroelectric liquid-crystalline monomers was carried out under an electric field. Upon photoirradiation of an Ar^+ laser beam at 488 nm, a monomer mixture in a 2-μm cell was polymerized and the initial molecular alignment was stabilized. Next, two beams at 488 nm were interfered in the cell, and the light intensity of the first-order diffraction light of a He-Ne laser beam at 633 nm was measured. The diffracted light appeared due to the grating formation. By applying an electric field, the intensity of the diffraction light increased, indicating a change in alignment of the unreacted monomers.

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  • 1C14 Formation of Holographic Bragg Gratings in Polymer Azobenzene Films Containing a Tolane Moiety

    ISHIGURO Makoto, SHISHIDO Atsushi, SHIONO Takeshi, IKEDA Tomiki

    ( 2004 )   222 - 223   2004.9

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    Polymer azobenzene films containing various contents of a tolane moiety with large birefringence were prepared. Two linearly polarized beams of an Ar^+ laser (488 nm) were interfered in the film, and the light intensity of the first-order diffraction of a He-Ne laser beam (633 nm) was measured. In the film with thickness of 100 μm, the diffraction efficiency reached 99.2% when photoirradiation was performed at 200 mW/cm^2 for 13 min. The maximum diffraction efficiency was significantly influenced by the content of the tolane moiety.

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  • 2B02 Grating Formation Based on Bragg Diffraction in Polymer Films Containing a Donor-Accepter Type Azobenzene Moiety

    SAISHOJI Aya, SHISHIDO Atsushi, SHIONO Takeshi, IKEDA Tomiki

    ( 2004 )   230 - 231   2004.9

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    Polymer films containing a donor-accepter type azobenzene moiety were prepared and formation of gratings based on a photoinduced change in refractive index was explored. When two linearly polarized beams of an Ar^+ laser (514 nm) were interfered in the CB30AB5 film (film thickness : 250 μm), the diffraction beam based on Bragg diffraction appeared immediately. The maximum diffraction efficiency reached 98% upon photoirradiation at 100 mW/cm^2 for 6 min. It was clearly observed that the response time became shorter with an increase in the light intensity of the writing beams, maintaining the high diffraction efficiency. Furthermore, holographic multiple data storages in the CB30AB5 film were demonstrated.

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  • 1C12 Flexible Liquid Crystal Hologram : Holographic Recording in Plastic Polymer Films

    SHIMURA Shin-ichiro, SHISHIDO Atsushi, SHIONO Takeshi, IKEDA Tomiki, FUJIKAKE Hideo, SATO Hiroto

    ( 2004 )   218 - 219   2004.9

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    A flexible liquid crystal hologram was prepared as a novel type of holographic materials. Polycarbonate films covered with a polyimide were employed as a substrate, and toluene solution of a polymer azobenzene liquid crystal (PALC) was coated on the rubbed substrate, resulting in a flexible PALC film. We attempted the formation of gratings and holographic image storage of 3-D objects into the flexible film. A clear and bright 3-D image was successfully reconstructed even in the bent film. This indicates that the holographic diffraction grating is formed in the flexible PALC film.

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  • 3C02 Preparation of Photonic Crystal Structure Using Liquid-Crystalline Polymer Particles and its Optical Responsiveness

    TSURUMA Takeyuki, SHISHIDO Atsushi, IKEDA Tomiki

    ( 2004 )   246 - 247   2004.9

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    Photonic crystal structures were formed by polymer particles containing azobenzene moieties and their optical responsiveness was investigated. A Bragg diffraction peak due to the periodic structure was observed in the PME3-30 film in the reflection spectrum. A change in the intensity of the diffraction peak was induced by irradiation of a linearly polarized beam at 488 nm. The observation of the film by SEM revealed the adhesion of the polymer particles induced by photoirradiation.

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  • Optically switchable Bragg reflectors

    A Urbas, J Klosterman, Tondiglia, V, L Natarajan, R Sutherland, S Tsutsumi, T Ikeda, T Bunning

    ADVANCED MATERIALS   16 ( 16 )   1453 - +   2004.8

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  • Photoinduced bending and unbending behavior of liquid-crystalline gels and elastomers

    YL Yu, M Nakano, T Ikeda

    PURE AND APPLIED CHEMISTRY   76 ( 7-8 )   1467 - 1477   2004.7

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  • Living random copolymerization of ethene and norbornene using ansa-fluorenylamidodimethyltitanium complex

    T Hasan, T Shiono, T Ikeda

    MACROMOLECULAR SYMPOSIA   213   123 - 129   2004.6

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  • Syntheses and properties of donor-acceptor-type 2,5-diarylthiophene and 2,5-diarylthiazole

    K Masui, A Mori, K Okano, K Takamura, M Kinoshita, T Ikeda

    ORGANIC LETTERS   6 ( 12 )   2011 - 2014   2004.6

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  • A novel synthetic procedure for stereoblock poly(propylene) with a living polymerization system

    K Nishii, T Shiono, T Ikeda

    MACROMOLECULAR RAPID COMMUNICATIONS   25 ( 10 )   1029 - 1032   2004.5

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  • Photomechanical effects in azobenzene-containing polymer systems

    YL Yu, M Nakano, T Ikeda

    JOURNAL OF SYNTHETIC ORGANIC CHEMISTRY JAPAN   62 ( 5 )   471 - 479   2004.5

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    DOI: 10.5059/yukigoseikyokaishi.62.471

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  • Effect of cross-linking density on photoinduced bending behavior of oriented liquid-crystalline network films containing azobenzene

    YL Yu, M Nakano, A Shishido, T Shiono, T Ikeda

    CHEMISTRY OF MATERIALS   16 ( 9 )   1637 - 1643   2004.5

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  • Effect of solvents on living polymerization of propylene with [t-BuNSiMe(2)Flu]TiMe2-MMAO catalyst system

    K Nishii, T Matsumae, EO Dare, T Shiono, T Ikeda

    MACROMOLECULAR CHEMISTRY AND PHYSICS   205 ( 3 )   363 - 369   2004.2

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  • Supporting effects of methylaluminoxane on the living polymerization of propylene with a chelating (diamide)dimethyltitanium complex

    H Hagimoto, T Shiono, T Ikeda

    MACROMOLECULAR CHEMISTRY AND PHYSICS   205 ( 1 )   19 - 26   2004.1

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  • Synthesis and investigation of photophysical and photochemical properties of new side-group liquid crystalline polymers containing coumarin moieties

    YQ Tian, E Akiyama, Y Nagase, A Kanazawa, O Tsutsumi, T Ikeda

    JOURNAL OF MATERIALS CHEMISTRY   14 ( 24 )   3524 - 3531   2004

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  • Preparation of Monodispersed Polymer Particles Containing Azobenzene Moieties

    A. Shishido E. Miyamoto, T. Ikeda

    Trans. Mater. Res. Soc. Jpn.   29   903 - 905   2004

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  • Photofunctional Polymers Based on Cooperative Effects

    IKEDA Tomiki

    Kobunshi   53 ( 4 )   276 - 282   2004

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    DOI: 10.1295/kobunshi.53.276

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  • 光応答性液晶ゲルアクチュエーター

    中野誠, 兪燕蕾, 池田富樹

    液晶   8   75 - 85   2004

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  • Preparation of Monodispersed Polymer Particles Containing Azobenzene Moieties

    A. Shishido E. Miyamoto, T. Ikeda

    Trans. Mater. Res. Soc. Jpn.   29   903 - 905   2004

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  • Liquid-crystalline elastomers with photomechanical properties

    YL Ya, M Nakano, T Ikeda

    LIQUID CRYSTALS VIII   5518   1 - 10   2004

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  • Photoinduced Reorientation of Liquid Crystals Doped with Thiophene Having Ester Moieties

    M. Yaegashi, A, Shishido T, Shiono T. Ikeda

    Trans. Mater. Res. Soc. Jpn.   29   955 - 958   2004

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  • 高分子アゾベンゼン液晶フィルムのブラッグ型高回折効率ホログラム

    宍戸厚, 池田富樹

    機能材料   24 ( 5 )   5 - 9   2004

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  • 光駆動高分子液晶フィルム-光で自由に曲がるプラスチック-

    池田富樹, 兪燕蕾, 中野誠

    応用物理   73   947 - 951   2004

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  • Photoinduced Reorientation of Liquid Crystals Doped with Thiophene Having Ester Moieties

    M. Yaegashi, A, Shishido T, Shiono T. Ikeda

    Trans. Mater. Res. Soc. Jpn.   29   955 - 958   2004

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  • Polarized emission from self-organized low-molecular-weight liquid crystals with the aid of hole-injecting materials

    M Kawamoto, H Mochizuki, T Ikeda, B Lee, Y Shirota

    JOURNAL OF APPLIED PHYSICS   94 ( 10 )   6442 - 6446   2003.11

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  • A novel class of photo- and electroactive polymers containing oxadiazole and amine moieties in a side chain

    H Mochizuki, T Hasui, M Kawamoto, T Ikeda, C Adachi, Y Taniguchi, Y Shirota

    MACROMOLECULES   36 ( 10 )   3457 - 3464   2003.5

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  • Functional materials and electro-optic properties for polymer stabilized ferroelectric liquid crystal

    JH Song, LS Park, ET Seon, YB Kim, T Ikeda

    SYNTHETIC METALS   137 ( 1-3 )   1411 - 1412   2003.4

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  • Facile synthesis of 2,5-diarylthiazoles via palladium-catalyzed tandem C-H substitutions. Design of tunable light emission and liquid crystalline characteristics

    A Mori, A Sekiguchi, K Masui, T Shimada, M Horie, K Osakada, M Kawamoto, T Ikeda

    JOURNAL OF THE AMERICAN CHEMICAL SOCIETY   125 ( 7 )   1700 - 1701   2003.2

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  • A liquid crystalline polyketone prepared from allene having an azobenzene substituent and carbon monoxide

    Y Takenaka, K Osakada, M Nakano, T Ikeda

    MACROMOLECULES   36 ( 4 )   1414 - 1416   2003.2

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  • Photoinduced alignment of liquid crystals parallel to the polarization direction of linearly polarized light

    CY Xu, T Shiono, T Ikeda, YH Wang, Y Takeuchi

    JOURNAL OF MATERIALS CHEMISTRY   13 ( 4 )   669 - 671   2003

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  • Holographic image storage in polymer azobenzene liquid crystals

    T Ikeda, S Yoneyama, T Yamamoto, M Hasegawa

    MOLECULAR CRYSTALS AND LIQUID CRYSTALS   401   149 - 159   2003

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  • Facile Synthesis of 2,5-Diarylthiazoles via Palladium-Catalyzed Tandem C-H Substitutions. Design of Tunable Light Emission and Liquid Crystalline Characteristics

    A. Mori, A. Sekiguchi, K, Masui T, Shimada M. Horie, K, Osakada M, Kawamoto, T. Ikeda

    J. Am. Chem. Soc.   125 ( 7 )   1700 - 1701   2003

  • Holographic image storage in polymer azobenzene liquid crystals

    Tomiki Ikeda, Satoshi Yoneyama, Takahiro Yamamoto, Makoto Hasegawa

    Molecular Crystals and Liquid Crystals Science and Technology Section A: Molecular Crystals and Liquid Crystals   401 ( 2 )   35 - 45   2003

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  • Highly Efficient Formation of Holographic Gratings in Polymer Liquid Crystals

    K. Okano, A. Shishido, O. Tsutsumi, T. Shiono, T. Ikeda

    Proceedings of SPIE   139   5213 - 5218   2003

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  • Side-Chain Polymer Liquid Crystals Containing Oxadiazole and Amine Moieties with Carrier-Transporting Abilities for Single-Layer Light-Emitting Diodes

    M. Kawamoto, H. Mochizuki, A. Shishido O, Tsutsumi T. Ikeda, B. Lee, Y. Shirota

    J. Phys. Chem. B.   107 ( 21 )   4887 - 4893   2003

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  • Photoresponsive behavior of azobenzene liquid-crystalline gels

    M Nakano, YL Yu, A Shishido, O Tsutsumi, A Kanazawa, T Shiono, T Ikeda

    MOLECULAR CRYSTALS AND LIQUID CRYSTALS   398   1 - 9   2003

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  • Side-Chain Polymer Liquid Crystals Containing Oxadiazole and Amine Moieties with Carrier-Transporting Abilities for Single-Layer Light-Emitting Diodes

    M. Kawamoto, H. Mochizuki, A. Shishido O, Tsutsumi T. Ikeda, B. Lee, Y. Shirota

    J. Phys. Chem. B.   107 ( 21 )   4887 - 4893   2003

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  • High-performance material for holographic gratings by means of a photoresponsive polymer liquid crystal containing a tolane moiety with high birefringence

    S Yoneyama, T Yamamoto, O Tsutsumi, A Kanazawa, T Shiono, T Ikeda

    MACROMOLECULES   35 ( 23 )   8751 - 8758   2002.11

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  • 架橋型ジアミドジメチルチタン錯体-アルミノキサン触媒系によるプロピレンのリビング重合

    萩本 準, 塩野 毅, 池田 富樹

    触媒   44 ( 6 )   429 - 431   2002.9

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  • Copolymerization of 1,3-butadiene and isoprene with cobalt dichloride/methylaluminoxane in the presence of triphenylphosphine

    DCD Nath, T Shiono, T Ikeda

    JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY   40 ( 17 )   3086 - 3092   2002.9

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  • Propene polymerization with stereospecific metallocene dichloride-[Ph3C][B(C6F5)(4)] using omega-alkenylaluminum as an alkylation reagent and as a functional comonomer

    YG Nam, T Shiono, T Ikeda

    MACROMOLECULES   35 ( 18 )   6760 - 6762   2002.8

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  • Living polymerization of propene with a chelating (diamide)dimethyltitanium complex using silica-supported methylaluminoxane

    H Hagimoto, T Shiono, T Ikeda

    MACROMOLECULES   35 ( 15 )   5744 - 5745   2002.7

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  • Effects of halogen ligands on 1,3-butadiene polymerization with cobalt dihalides and methylaluminoxane

    DCD Nath, T Shiono, T Ikeda

    MACROMOLECULAR CHEMISTRY AND PHYSICS   203 ( 9 )   1171 - 1177   2002.6

  • Propagation Mechanism for Living Polymerization of Olefins Using [t-BuNSiMe2Flu]TiMe2–Based Catalysts Reviewed

    西井 圭, 塩野毅, 池田富樹

    高分子論文集, 59巻, pp.371-376   2002.6

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  • Photoinduced reorientation and thermal effects in an oligothiophene-doped liquid crystal system

    HC Zhang, S Shiino, A Kanazawa, O Tsutsumi, T Shiono, T Ikeda

    JOURNAL OF APPLIED PHYSICS   91 ( 9 )   5558 - 5563   2002.5

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  • (tert-ブチルアミドジメチルシリルフルオレニル)ジメチルチタン触媒系によるオレフィンリビング重合の成長反応機能 Reviewed

    西井圭, 塩野, 毅, 池田富樹

    高分子論文集   59 ( 6 )   371 - 376   2002.4

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  • Optically switchable liquid crystals containing azobenzene chromophores.

    T Ikeda, A Shishido, O Tsutsumi, A Kanazawa

    ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY   223   D47 - D48   2002.4

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  • cis-specific living polymerization of 1,3-butadiene with CoCl2 and methylaluminoxane

    DCD Nath, T Shiono, T Ikeda

    MACROMOLECULAR CHEMISTRY AND PHYSICS   203 ( 4 )   756 - 760   2002.3

  • Effects of cocatalysts on propene polymerization with [t-BuNSiMe2(CSMe4)]TiMe2

    A Ioku, T Hasan, T Shiono, T Ikeda

    MACROMOLECULAR CHEMISTRY AND PHYSICS   203 ( 4 )   748 - 755   2002.3

  • Supporting effect of methylaluminoxane on propene polymerization with monocyclopentadienylalkyltitanium derivatives

    A Ioku, T Shiono, T Ikeda

    APPLIED CATALYSIS A-GENERAL   226 ( 1-2 )   15 - 22   2002.2

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  • Living polymerization of propene with a chelating diamide complex of titanium using dried methylaluminoxane

    H Hagimoto, T Shiono, T Ikeda

    MACROMOLECULAR RAPID COMMUNICATIONS   23 ( 1 )   73 - 76   2002.1

  • X-ray measurements of an oligothiophene containing acetylene linkage

    HC Zhang, S Shiino, A Kanazawa, O Tsutsumi, T Shiono, T Ikeda, Y Nagasel

    SYNTHETIC METALS   126 ( 1 )   11 - 18   2002.1

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  • Dynamics of photochemical phase transition of guest/host liquid crystals with an azobenzene derivative as a photoresponsive chromophore

    JH Sung, S Hirano, O Tsutsumi, A Kanazawa, T Shiono, T Ikeda

    CHEMISTRY OF MATERIALS   14 ( 1 )   385 - 391   2002.1

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  • Control of regiospecificity in propene polymerization with SiO2-supported Cp*TiMe3 catalysts

    A Ioku, T Shiono, T Ikeda

    JOURNAL OF MACROMOLECULAR SCIENCE-PURE AND APPLIED CHEMISTRY   39 ( 5 )   397 - 404   2002

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  • Refractive-index modulation by means of photosensitive liquid crystals

    T Ikeda, S Yoneyama, T Yamamoto, M Hasegawa

    MOLECULAR CRYSTALS AND LIQUID CRYSTALS   375   45 - 60   2002

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  • A rodlike organogelator: fibrous aggregation of azobenzene derivatives with a syn-chiral carbonate moiety

    J Mamiya, K Kanie, T Hiyama, T Ikeda, T Kato

    CHEMICAL COMMUNICATIONS   ( 17 )   1870 - 1871   2002

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  • Polymer azobenzene liquid crystal films with nano-second photoresponse.

    Kanato Adachi, Atsushi Shishido, Osamu Tsutsumi, Tomiki Ikeda

    KOBUNSHI RONBUNSHU   59   767-771   2002

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  • Supporting Effect of Methylaluminoxane with Monocylcopentadienylalkyltitanium Derivatives on Propene Polymerization

    A. Ioku T, Shiono T. Ikeda

    Appl. Catal. A: General   226   15 - 22   2002

  • Propagation mechanism for living polymerization of olefins using [eta(1):eta(3)-tert-Butyl(dimethylfluorenylsilyl)amido] dimethyltitanium-based catalyst Reviewed

    K Nishii, T Shiono, T Ikeda

    KOBUNSHI RONBUNSHU   59 ( 6 )   371 - 376   2002

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  • 光による分子配列の形成と制御

    宍戸厚, 池田富樹

    O plus E   24   269 - 274   2002

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  • Chemospecificity in arylations of delta- and gamma-ketocarboxylic acids with P2O5-MsOH, TfOH, and related acidic media

    N Yonezawa, M Koike, A Kameda, S Naito, T Hino, K Maeyama, T Ikeda

    SYNTHETIC COMMUNICATIONS   32 ( 20 )   3169 - 3180   2002

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  • Ethyl cellulose films as alignment layers for liquid crystals

    LF Yan, QS Zhu, T Ikeda

    JOURNAL OF APPLIED POLYMER SCIENCE   82 ( 11 )   2770 - 2774   2001.12

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  • Distinct thermodynamic behaviour of a mesomorphic gold nanoparticle covered with a liquid-crystalline compound

    N Kanayama, O Tsutsumi, A Kanazawa, T Ikeda

    CHEMICAL COMMUNICATIONS   ( 24 )   2640 - 2641   2001.12

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  • Copolymerization of propene and 1,2,4-trivinylcyclohexane by a MgCl2-supported TiCl4 catalyst

    YG Nam, S Murayama, T Shiono, T Ikeda

    MACROMOLECULES   34 ( 19 )   6533 - 6535   2001.9

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  • Syndio-specific living polymerization of propene with [t-BuNSiMe(2)Flu]TiMe2 using MAO as cocatalyst. (vol 34, pg 3142, 200)

    T Hasan, A Ioku, K Nishii, T Shiono, T Ikeda

    MACROMOLECULES   34 ( 17 )   6152 - 6152   2001.8

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  • Optical recording using a photochromic ferroelectric liquid crystal

    L. Komitov, O. Tsutsumi, C. Ruslim, T. Ikeda, K. Ichimura, K. Yoshino

    Journal of Applied Physics   89 ( 12 )   7745 - 7749   2001.6

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    DOI: 10.1063/1.1373697

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  • Living copolymerization of propene and alpha-olefins with Me2Si(eta(3)-Flu)((BuN)-Bu-t)TiMe2-based catalysts.

    T Shiono, A Kanetaka, N Kei, T Ikeda

    ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY   221   U368 - U368   2001.4

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  • Phase-type gratings formed by photochemical phase transition of polymer azobenzene liquid crystal. 2. Rapid switching of diffraction beams in thin films

    T Yamamoto, A Ohashi, S Yoneyama, M Hasegawa, O Tsutsumi, A Kanazawa, T Shiono, T Ikeda

    JOURNAL OF PHYSICAL CHEMISTRY B   105 ( 12 )   2308 - 2313   2001.3

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  • Novel cross-linked organic materials with pronounced spontaneous polarization based on bis-dipolar molecules

    CD Keum, A Kanazawa, T Ikeda

    ADVANCED MATERIALS   13 ( 5 )   321 - 323   2001.3

  • Thermal stability of alignment of a nematic liquid crystal induced by polyimides exposed to linearly polarized light

    YH Wang, CY Xu, A Kanazawa, T Shiono, T Ikeda, Y Matsuki, Y Takeuchi

    LIQUID CRYSTALS   28 ( 3 )   473 - 475   2001.3

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  • Supramolecular polar thin films built by surfactant liquid crystals: Polarization-tunable multilayer self-assemblies with in-plane ferroelectric ordering of ion-based dipoles

    A Kanazawa, T Ikeda, J Abe

    JOURNAL OF THE AMERICAN CHEMICAL SOCIETY   123 ( 8 )   1748 - 1754   2001.2

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  • Application of photosensitive polyimides as alignment layer to optical switching devices of a nematic liquid crystal

    GH Kim, S Enomoto, A Kanazawa, T Shiono, T Ikeda, LS Park

    LIQUID CRYSTALS   28 ( 2 )   271 - 277   2001.2

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  • Electroluminescent behavior of oxadiazole derivatives in liquid-crystalline media

    H Mochizuki, T Hasui, O Tsutsumi, A Kanazawa, T Shiono, T Ikeda, C Adachi, Y Taniguchi, Y Shirota

    MOLECULAR CRYSTALS AND LIQUID CRYSTALS   365   1085 - 1094   2001

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  • Ethyl Cellulose Layers as Alignment for Liquid Crystals

    L. Yan, Q. Zhu T. Ikeda

    J. Appl. Polym. Sci.   82 ( 11 )   2770 - 2774   2001

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  • Distinct Thermodynamic Behaviour of A Mesomorfphic Gold Nanoparticle Covered With A Liquid-Crystalline Compound

    N.Kanayama, O.Tsutsumi, A.Kanazawa, T.Ikeda

    Chem.Commun.   ( 24 )   2640 - 2641   2001

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  • Photoinduced reorientation of liquid crystals doped with a mesogenic oligothiophene

    HC Zhang, S Shiino, O Tsutsumi, A Kanazawa, T Shiono, T Ikeda

    MOLECULAR CRYSTALS AND LIQUID CRYSTALS   368   4137 - 4144   2001

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  • Photochemical phase transition behavior of liquid crystals in the presence of non-mesogenic molecules Reviewed

    JH Sung, O Tsutsumi, A Kanazawa, T Shiono, T Ikeda

    LIQUID CRYSTALS V   4463   173 - 180   2001

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  • Formation of Grating by Means of Photoinduced Alignment Changeof Polymer Liquid Crystals with Azobenzene Moieties

    S.Yoneyama, O.Tsutsumi, A.Kanazawa, T.Shiono, T.Ikeda

    Mol.Cryst.Liq.Cryst.   368   335 - 343   2001

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  • Spontaneous Formation of Two-dimensional Self-assembled Polar Atomic Layers with Ferroelectric Ordering of Ion Pairs in Liquid-crystalline Surfctant Complexes

    A.Kanazawa, T.Ikeda

    Mol.Cryst.Liq.Cryst.   366   473 - 482   2001

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  • Rapid photochemical control of phase structure of polymer liquid crystals with hydroxyazobenzene as a photosensitive chromophore

    Osamu Tsutsumi, Tomiki Ikeda

    Molecular Crystals and Liquid Crystals Science and Technology Section A: Molecular Crystals and Liquid Crystals   368   411 - 422   2001

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    DOI: 10.1080/10587250108029972

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  • Rapid photochemical control of phase structure of polymer liquid crystals with hydroxyazobenzene as a photosensitive chromophore

    O Tsutsumi, T Ikeda

    MOLECULAR CRYSTALS AND LIQUID CRYSTALS   368   4179 - 4190   2001

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  • Holographic Grating by Means of Polymer Liquid Crystals

    T. Ikeda, S. Yoneyama T. Yamamoto, M. Hasegawa

    J. Inform. Disp.   2   6 - 12   2001

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  • Photochemical Modulation of Refractive Index by Means of Photosensitive Liquid Crystals

    T.Ikeda

    Mol.Cryst.Liq.Cryst.   364   187 - 197   2001

  • Formation of grating by means of photoinduced alignment change of polymer liquid crystals with azobenzene moieties

    Satoshi Yoneyama, Osamu Tsutsumi, Akihiko Kanazawa, Takeshi Shiono, Tomiki Ikeda

    Molecular Crystals and Liquid Crystals Science and Technology Section A: Molecular Crystals and Liquid Crystals   368   335 - 343   2001

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    DOI: 10.1080/10587250108029963

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  • Spontaneous formation of two-dimensional self-assembled polar atomic layers with ferroelectric ordering of ion pairs in liquid-crystalline surfactant complexes

    A Kanazawa, T Ikeda

    MOLECULAR CRYSTALS AND LIQUID CRYSTALS   366   2325 - 2334   2001

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  • Supramolecular Polar Thin Films Built by Surfactant Liquid Crystals: Polarization-Tunable Multilayer Self-Assemblies with In-Plane Ferroelectric Ordering of Ion-Based Dipoles

    A. Kanazawa, T. Ikeda, J. Abe

    J. Am. Chem. Soc.   123 ( 8 )   1748 - 1754   2001

  • Syndiospecific Living Polymerization of Propene with [t-BuNSiMe2Flu]TiMe2 Using MAO as Cocatalyst

    T. Hasan, A. Ioku, K, Nishii T, Shiono T. Ikeda

    Macromolecules   34 ( 10 )   3142 - 3145   2001

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  • Phase-Type Gratings Formed by Photochemical Phase Transition of Polymer Azobenzene Liquid Crystals: 2. Rapid Switching of Diffraction Beams in This Films

    T. Yamamoto, A. Ohashi, S. Yoneyama, M. Hasegawa, O. Tsutsumi, A. Kanazawa, T, Shiono T. Ikeda

    J. Phys. Chem. B   105 ( 12 )   2308 - 2313   2001

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  • 高分子アゾベンゼン液晶の高速ホログラム記録

    宍戸厚, 池田富樹

    光技術コンタクト   39 ( 11 )   633 - 639   2001

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  • Formation of intensity grating in a polymer liquid crystal with a side-chain azobenzene moiety by photoinduced alignment change of mesogens

    S Yoneyama, T Yamamoto, M Hasegawa, O Tsutsumi, A Kanazawa, T Shiono, T Ikeda

    JOURNAL OF MATERIALS CHEMISTRY   11 ( 12 )   3008 - 3013   2001

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  • Formation of intensity grating in a polymer liquid crystal with a side-chain azobenzene moiety by photoinduced alignment change of mesogens

    S. Yoneyama, T. Yamamoto, M. Hasegawa, O. Tsutsumi, A. Kanazawa, T. Shiono, T. Ikeda

    Journal of Materials Chemistry   11 ( 12 )   3008 - 3013   2001

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    DOI: 10.1039/b105187n

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  • Photochemical modulation of refractive index by means of photosensitive liquid crystals

    T Ikeda

    MOLECULAR CRYSTALS AND LIQUID CRYSTALS   364   187 - 197   2001

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  • Holographic grating by means of polymer liquid crystals

    Tomiki Ikeda, Satoshi Yoneyama, Takahiro Yamamoto, Makoto Hasegawa

    Journal of Information Display   2 ( 3 )   6 - 12   2001

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  • 液晶フォトニクスの新展開

    金澤昭彦, 池田富樹

    光学   30   11 - 20   2001

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  • 光で駆動する液晶ナノフィルム

    宍戸厚, 池田富樹

    未来材料   1 ( 8 )   1 - 6   2001

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  • Synthesis and oxidative degradation of poly(ethene-ran-1,3-butadiene)

    T Shiono, O Yoshino, T Ikeda

    MACROMOLECULAR RAPID COMMUNICATIONS   21 ( 18 )   1297 - 1301   2000.12

  • Liquid crystalline coumarin polymers, 1 Synthesis and properties of side-group liquid crystalline polymers with coumarin moieties

    YQ Tian, E Akiyama, Y Nagase, A Kanazawa, O Tsutsumi, T Ikeda

    MACROMOLECULAR CHEMISTRY AND PHYSICS   201 ( 14 )   1640 - 1652   2000.9

  • Holographic gratings in the optically isotropic state of polymer azobenzene liquid-crystal films

    T Yamamoto, S Yoneyama, O Tsutsumi, A Kanazawa, T Shiono, T Ikeda

    JOURNAL OF APPLIED PHYSICS   88 ( 5 )   2215 - 2220   2000.9

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  • Emission behavior of molecularly doped electroluminescent device using liquid-crystalline matrix

    H Mochizuki, T Hasui, T Shiono, T Ikeda, C Adachi, Y Taniguchi, Y Shirota

    APPLIED PHYSICS LETTERS   77 ( 11 )   1587 - 1589   2000.9

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  • A thiophene liquid crystal as a novel pi-conjugated dye for photo-manipulation of molecular alignment

    HC Zhang, S Shiino, A Shishido, A Kanazawa, O Tsutsumi, T Shiono, T Ikeda

    ADVANCED MATERIALS   12 ( 18 )   1336 - 1339   2000.9

  • Photochemical modulation of color and transmittance in chiral nematic liquid crystal containing an azobenzene as a photosensitive chromophore

    HK Lee, K Doi, H Harada, O Tsutsumi, A Kanazawa, T Shiono, T Ikeda

    JOURNAL OF PHYSICAL CHEMISTRY B   104 ( 30 )   7023 - 7028   2000.8

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  • Additive effects of trialkylaluminum on propene polymerization with (t-BuNSiMe(2)Flu)TiMe2-based catalysts

    T Shiono, S Yoshida, H Hagihara, T Ikeda

    APPLIED CATALYSIS A-GENERAL   200 ( 1-2 )   145 - 152   2000.8

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  • Photochemical modulation of alignment in liquid crystals

    T Ikeda, A Kanazawa

    BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN   73 ( 8 )   1715 - 1733   2000.8

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    Language:English   Publishing type:Book review, literature introduction, etc.  

    DOI: 10.1246/bcsj.73.1715

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  • Photoinduced alignment of polymer liquid crystals containing azobenzene moieties in the side group VII. On He-Ne laser beam irradiation

    YL Wu, JI Mamiya, O Tsutsumi, A Kanazawa, T Shiono, T Ikeda

    LIQUID CRYSTALS   27 ( 6 )   749 - 753   2000.6

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  • Optical switching and alignment of antiferroelectric liquid crystals containing an azo group

    K Shirota, Yamaguchi, I, K Kanie, T Ikeda, T Hiyama, Kobayashi, I, Y Suzuki

    LIQUID CRYSTALS   27 ( 5 )   555 - 558   2000.5

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  • Copolymerization of ethylene and styrene with a MgCl2-supported CpTiCl3 catalyst

    KK Kang, JK Oh, YT Jeong, T Shiono, T Ikeda

    MACROMOLECULAR CHEMISTRY AND PHYSICS   201 ( 8 )   846 - 850   2000.5

  • Multifunctional tetracoordinate phosphorus species with high self-organizing ability

    A Kanazawa, T Ikeda

    COORDINATION CHEMISTRY REVIEWS   198   117 - 131   2000.3

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  • Light-scattering-mode optical switching and image storage in polymer/liquid crystal composite films by means of photochemical phase transition

    HK Lee, K Doi, A Kanazawa, T Shiono, T Ikeda, T Fujisawa, M Aizawa, B Lee

    POLYMER   41 ( 5 )   1757 - 1763   2000.3

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  • Specific and chemoselective multi-alpha-arylation reaction of benzoylformic acid with or without decarbonylation in P2O5-MsOH and related acidic media

    N Yonezawa, T Hino, K Matsuda, T Matsuki, D Narushima, M Kobayashi, T Ikeda

    JOURNAL OF ORGANIC CHEMISTRY   65 ( 4 )   941 - 944   2000.2

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  • Holographic gratings and holographic image storage via photochemical phase transitions of polymer azobenzene liquid-crystal films

    T Yamamoto, M Hasegawa, A Kanazawa, T Shiono, T Ikeda

    JOURNAL OF MATERIALS CHEMISTRY   10 ( 2 )   337 - 342   2000.2

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  • Holographic Gratings and Holographic Image Storage via Photochemical Phase Transitions of Polymer Azobenzene Liquid-Crystal Films

    T. Yamamoto, M, Hasagawa, A. Kanazawa, T, Shiono T. Ikeda

    J. Mater. Chem.   10 ( 2 )   337 - 342   2000

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  • Optical Switching and Image Storage by Means of Photochromic Liquid Crystals

    T. Ikeda, O, Tsutsumi, Y. Wu

    Mol. Cryst. Liq. Cryst.   347   1 - 13   2000

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  • Copolymerization of Ethylene and Styrence with a MgCl2-Supported CpTiCl3 Catalyst

    K. K. Kang, J.K. Oh, Y, T. Jeong, T, Shiono T. Ikeda

    Macromol. Chem. Phys.   201 ( 8 )   846 - 850   2000

  • Photochemical Modulation of Color and Transmittance in Chiral Nematic Liquid Crystal Containing an Azobenzene as a Photosensitive Chromophore

    H.-K. Lee, K. Doi, H. Harada, O. Tsutsumi, A. Kanazawa, T, Shiono T. Ikeda

    J. Phys. Chem. B   104 ( 30 )   7023 - 7028   2000

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  • Multifunctional Tetracoordinate Phosphorus Species with High Self-Organizing Ability

    A. Kanazawa, T. Ikeda

    Coord. Chem. Rev.   198   117 - 131   2000

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  • Novel liquid-crystalline and amorphous materials containing oxadiazole and amine moieties for electroluminescent devices

    H Mochizuki, T Hasui, M Kawamoto, T Shiono, T Ikeda, C Adachi, Y Taniguchi, Y Shirota

    CHEMICAL COMMUNICATIONS   ( 19 )   1923 - 1924   2000

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  • Photoinduced alignment behavior of polymer liquid crystals containing azobenzene moieties in the side chain Reviewed

    O Tsutsumi, YL Wu, J Mamiya, T Ikeda

    LIQUID CRYSTALS IV   4107   1 - 8   2000

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  • Optical switching and image storage by means of photochromic liquid crystals

    T Ikeda, O Tsutsumi, YL Wu

    MOLECULAR CRYSTALS AND LIQUID CRYSTALS   347   245 - 257   2000

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  • Polar thin films produced by phosphonium liquid crystals: Two-dimensional self-assembled ionic layers with spontaneous polarization

    A Kanazawa, T Ikeda, J Abe

    ANGEWANDTE CHEMIE-INTERNATIONAL EDITION   39 ( 3 )   612 - +   2000

  • Liquid-Crystalline Coumarin Polymers. I. Synthesis and Properties of Side-Chain Liquid Crystalline Polymers with Coumarin Moieties

    Y.-Q. Tian, E. Akiyama, Y, Nagase A. Kanazawa, O. Tsutsumi, T. Ikeda

    Macromol. Chem. Phys.   201 ( 14 )   1640 - 1652   2000

  • A Thiophene Liquid Crystal as a Novel p-Conjugated Dye for Photo-Manipulation of Molecular Alignment

    H. Zhang, S. Shiino, A, Shishido A. Kanazawa, O. Tsutsumi T, Shiono T. Ikeda

    Adv. Mater.   12 ( 18 )   1336 - 1339   2000

  • Direct evidence of the second-order dependence of propagation rate on propene concentration in living polymerization with the [t-BuNSiMe<inf>2</inf>Flu]TiMe<inf>2</inf>/B(C<inf>6</inf>F<inf>5</inf>) <inf>3</inf> catalyst

    Hideaki Hagihara, Hideaki Hagihara, Takeshi Shiono, Tomiki Ikeda

    Macromolecular Rapid Communications   20   200 - 202   1999.12

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  • Reversible optical control of transmittance in polymer/liquid crystal composite films by photoinduced phase transition

    HK Lee, A Kanazawa, T Shiono, T Ikeda, T Fujisawa, M Aizawa, B Lee

    JOURNAL OF APPLIED PHYSICS   86 ( 11 )   5927 - 5934   1999.12

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  • Photoinduced alignment of polymer liquid crystals containing azobenzene moieties in the side chain. 6. Biaxiality and three-dimensional reorientation

    YL Wu, J Mamiya, A Kanazawa, T Shiono, T Ikeda, QJ Zhang

    MACROMOLECULES   32 ( 26 )   8829 - 8835   1999.12

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  • Profiles of ethylene polymerization with zirconocene-trialkylaluminum/borane compound

    N Naga, T Shiono, T Ikeda

    JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL   150 ( 1-2 )   155 - 162   1999.12

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  • Phase-type gratings formed by photochemical phase transition of polymer azobenzene liquid crystals: Enhancement of diffraction efficiency by spatial modulation of molecular alignment

    T Yamamoto, M Hasegawa, A Kanazawa, T Shiono, T Ikeda

    JOURNAL OF PHYSICAL CHEMISTRY B   103 ( 45 )   9873 - 9878   1999.11

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  • Real-time holographic grating by means of photoresponsive polymer liquid crystals with a flexible siloxane spacer in the side chain

    M Hasegawa, T Yamamoto, A Kanazawa, T Shiono, T Ikeda, Y Nagase, E Akiyama, Y Takamura

    JOURNAL OF MATERIALS CHEMISTRY   9 ( 11 )   2765 - 2769   1999.11

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  • Photoinduced alignment behavior of polymer liquid crystals containing azobenzene moieties in the side chain

    T Ikeda, YL Wu

    PURE AND APPLIED CHEMISTRY   71 ( 11 )   2131 - 2136   1999.11

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  • Optical switching of nematic liquid crystal by means of photoresponsive polyimides as an alignment layer

    GH Kim, S Enomoto, A Kanazawa, T Shiono, T Ikeda, LS Park

    APPLIED PHYSICS LETTERS   75 ( 22 )   3458 - 3460   1999.11

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  • The synthesis and polymerization behavior of bimetallic pyridine diamide complexes containing transition metal (Ti, Zr)

    KK Kang, SP Hong, YT Jeong, T Shiono, T Ikeda

    JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY   37 ( 20 )   3756 - 3762   1999.10

  • Photochemically induced dynamic grating by means of side chain polymer liquid crystals

    M Hasegawa, T Yamamoto, A Kanazawa, T Shiono, T Ikeda

    CHEMISTRY OF MATERIALS   11 ( 10 )   2764 - 2769   1999.10

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  • Photoinduced phase transition of nematic liquid crystals with donor-acceptor azobenzenes: mechanism of the thermal recovery of the nematic phase

    O Tsutsumi, A Kanazawa, T Shiono, T Ikeda, LS Park

    PHYSICAL CHEMISTRY CHEMICAL PHYSICS   1 ( 18 )   4219 - 4224   1999.9

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  • Copolymerization of atactic polypropene macromonomer with propene by an isospecific metallocene catalyst

    T Shiono, SM Azad, T Ikeda

    MACROMOLECULES   32 ( 18 )   5723 - 5727   1999.9

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  • Enhancement of stability in optical switching of photosensitive liquid crystal by means of reflection mode analysis

    A Shishido, A Kanazawa, T Shiono, T Ikeda, N Tamai

    JOURNAL OF MATERIALS CHEMISTRY   9 ( 9 )   2211 - 2213   1999.9

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  • Photochemical control of conductivity of polythiophenes with photochromic moieties

    H Mochizuki, Y Nabeshima, T Kitsunai, A Kanazawa, T Shiono, T Ikeda, T Hiyama, T Maruyama, T Yamamoto, N Koide

    JOURNAL OF MATERIALS CHEMISTRY   9 ( 9 )   2215 - 2219   1999.9

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  • Photoinduced alignment of polymer liquid crystals containing azobenzene moieties in the side chain. 4. Dynamic study of the alignment process

    YL Wu, A Kanazawa, T Shiono, T Ikeda, QJ Zhang

    POLYMER   40 ( 17 )   4787 - 4793   1999.8

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  • Polymerization behavior of alpha-olefins with rac- and meso-type ansa-metallocene catalysts: Effects of cocatalyst and metallocene ligand

    N Naga, T Shiono, T Ikeda

    MACROMOLECULAR CHEMISTRY AND PHYSICS   200 ( 7 )   1587 - 1594   1999.7

  • In situ photopolymerization behavior of chiral liquid-crystalline monomers and image storage using ferroelectric properties

    S Ogiri, H Nakamura, A Kanazawa, T Shiono, T Ikeda, Nishiyama, I

    MACROMOLECULES   32 ( 15 )   4806 - 4813   1999.7

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  • Highly active MgCl2-supported CpMCl3 (M = Ti, Zr) catalysts for ethylene polymerization

    KK Kang, JK Oh, YT Jeong, T Shiono, T Ikeda

    MACROMOLECULAR RAPID COMMUNICATIONS   20 ( 6 )   308 - 311   1999.6

  • Photoinduced alignment of polymer liquid crystals containing azobenzene moieties in the side chain. 5. Effect of the azo contents on alignment behavior and enhanced response

    YL Wu, QJ Zhang, A Kanazawa, T Shiono, T Ikeda, Y Nagase

    MACROMOLECULES   32 ( 12 )   3951 - 3956   1999.6

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  • Cyclopolymerization of 1,7-octadiene with metallocene methylaluminoxane

    N Naga, T Shiono, T Ikeda

    MACROMOLECULAR CHEMISTRY AND PHYSICS   200 ( 6 )   1466 - 1472   1999.6

  • Reaction routes of specific decarbonylative alpha,alpha-diarylation of 2-methoxypropanoic acid analogues in P2O5-MsOH and the related reagents

    N Yonezawa, T Hino, M Shimizu, K Matsuda, T Ikeda

    JOURNAL OF ORGANIC CHEMISTRY   64 ( 11 )   4179 - 4182   1999.5

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  • Direct evidence of the second-order dependence of propagation rate on propene concentration in living polymerization with the [t-BuNSiMe(2)Flu]TiMe2/B(C6F5)(3) catalyst

    H Hagihara, T Shiono, R Ikeda

    MACROMOLECULAR RAPID COMMUNICATIONS   20 ( 4 )   200 - 202   1999.4

  • Polymerization of liquid-crystalline monomers having a Schiff-base structure

    S Ogiri, M Ikeda, A Kanazawa, T Shiono, T Ikeda

    POLYMER   40 ( 8 )   2145 - 2150   1999.4

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  • Copolymerization of Propene and Nonconjugated Diene Involving Intramolecular Cyclization with Metallocene/Methylaluminoxane

    Naofumi Naga, Takeshi Shiono, Tomiki Ikeda

    Macromolecules   32 ( 5 )   1348 - 1355   1999.3

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    DOI: 10.1021/ma9814144

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  • Three-dimensional manipulation of an azo polymer liquid crystal with unpolarized light

    YL Wu, T Ikeda, QJ Zhang

    ADVANCED MATERIALS   11 ( 4 )   300 - 302   1999.3

  • Copolymerization of propene and nonconjugated diene involving intramolecular cyclization with metallocene/methylaluminoxane

    N Naga, T Shiono, T Ikeda

    MACROMOLECULES   32 ( 5 )   1348 - 1355   1999.3

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  • Orientational dynamics in the crystalline and amorphous states of side-chain liquid crystalline polysiloxane probed by second harmonic generation

    M Hasegawa, N Nemoto, Y Nagase, Y Shirai, T Ikeda, J Abe

    POLYMER   40 ( 1 )   219 - 225   1999.1

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  • Cyclopolymerization of 1,7-Octadiene with Metallocene/Methylaluminoxane

    N. Naga T, Shiono T. Ikeda

    Macromol. Chem. Phys.   200 ( 6 )   1466 - 1472   1999

  • Two-Dimensional Superlattice Self-Formed by Novel Ionic Liquid Crystals and Its Photofunctional Property

    A. Kanazawa, T. Ikeda

    Mat. Res. Soc. Symp. Proc.   559   201 - 210   1999

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  • Rheological properties of ionomer based on propylene terpolymer

    KK Kang, YT Jeong, DH Lee, T Shiono, T Ikeda

    JOURNAL OF MACROMOLECULAR SCIENCE-PHYSICS   B38 ( 3 )   227 - 236   1999

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  • Stereospecific Polymerization of Methacrylates with Dimethylsilylene-Bridged Zirconocene Catalysts

    N. Saegusa, T, Saito T, Shiono H. Hagihara T. Ikeda, H. Deng, K. Soga

    Macromol. Symp., Metalorganic Catalysts for Synthesis and Polymerization   583 - 589   1999

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  • Holographic Grating Formed by Photochemical Phase Transition of Polymer Azobenzene Liquid Crystal

    T. Yamamoto, S. Yoneyama, M. Hasegawa, A. Kanazawa, T, Shiono T. Ikeda

    Mat. Res. Soc. Symp. Proc.   559   153 - 158   1999

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  • Polymerization Behaviour of a-Olefins with rac- and meso-Type ansa-Metallocene Catalysts: Effect of Cocatalyst and Metallocene Ligand

    N. Naga T, Shiono T. Ikeda

    Macromol. Chem. Phys.   200 ( 7 )   1587 - 1594   1999

  • Enhancement of Stability in Optical Switching of Photosensitive Liquid Crystal by Means of Reflection Mode Analysis

    A. Shishido A. Kanazawa T, Shiono T, Ikeda N. Tamai

    J. Mater. Chem.   9 ( 9 )   2211 - 2213   1999

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  • A Direct Evidence of Second-Order Dependence of Propagation on Monomer Concentration in Propene Polymerization with (t-BuNSiMe2Flu)TiMe2/B(C6F5)3 Catalyst

    H. Hagihara T, Shiono T. Ikeda

    Macromol. Rapid Commun.   20 ( 4 )   200 - 202   1999

  • A Dynamic Grating Using a Photochemical Phase Transition of Polymer Liquid Crystals Containing Azobenzene Derivatives

    M. Hasegawa, T. Yamamoto, A. Kanazawa, T, Shiono T. Ikeda

    Adv. Mater.   11 ( 8 )   675 - 677   1999

  • Acid-Mediated Specific a,a-Diarylation and a-Monoarylation Reactions of Pyruvic Acid with/without Decarbonylation

    N. Yonezawa, T. Hino, M. Shimizu, K, Matsuda T. Ikeda

    Synth. Commun.   29   1687 - 1695   1999

  • Acid-mediated specific alpha,alpha-diarylation and alpha-monoarylation reactions of pyruvic acid with/without decarbonylation

    N Yonezawa, T Hino, T Kinuno, T Matsuki, T Ikeda

    SYNTHETIC COMMUNICATIONS   29 ( 10 )   1687 - 1695   1999

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  • Stereospecific Polymerization of Methacrylates with Dimethylsilylene-Bridged Zirconocene Catalysts

    N. Saegusa, T, Saito T, Shiono H. Hagihara T. Ikeda, H. Deng, K. Soga

    Macromol. Symp., Metalorganic Catalysts for Synthesis and Polymerization   583 - 589   1999

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  • Holographic grating formed by photochemical phase transition of polymer azobenzene liquid crystal

    T Yamamoto, S Yoneyama, M Hasegawa, A Kanazawa, T Shiono, T Ikeda

    LIQUID CRYSTAL MATERIALS AND DEVICES   559   153 - 158   1999

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  • Two-dimensional superlattice self-formed by novel ionic liquid crystals and its photofunctional property

    A Kanazawa, T Ikeda

    LIQUID CRYSTAL MATERIALS AND DEVICES   559   201 - 210   1999

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  • Stereospecificity of propene polymerization with achiral titanocene-based catalysts

    H Hagihara, T Shiono, T Ikeda

    MACROMOLECULAR CHEMISTRY AND PHYSICS   199 ( 11 )   2439 - 2444   1998.11

  • Liquid Crystal Photonics

    IKEDA Tomiki

    Journal of the Japanese Liquid Crystal Society   2 ( 4 )   257 - 275   1998.10

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  • Alignment of a nematic liquid crystal induced by anisotropic photo-oxidation of photosensitive polyimide films

    YH Wang, CY Xu, A Kanazawa, T Shiono, T Ikeda, Y Matsuki, Y Takeuchi

    JOURNAL OF APPLIED PHYSICS   84 ( 8 )   4573 - 4578   1998.10

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  • Liquid Crystal Photonics

    IKEDA Tomiki

    37 ( 9 )   676 - 676   1998.9

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  • Optical switching by means of liquid crystals with donor-acceptor azobenzenes.

    O Tsutsumi, T Ikeda

    ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY   216   U7 - U7   1998.8

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  • Polymerization of methyl methacrylate with non-bridged zirconocene catalysts

    T Shiono, T Saito, N Saegusa, H Hagihara, T Ikeda, H Deng, K Soga

    MACROMOLECULAR CHEMISTRY AND PHYSICS   199 ( 8 )   1573 - 1579   1998.8

  • Generation of nematic liquid crystal alignment with polyimides exposed to linearly polarized light of long wavelength

    YH Wang, CY Xu, A Kanazawa, T Shiono, T Ikeda, Y Matsuki, Y Takeuchi

    JOURNAL OF APPLIED PHYSICS   84 ( 1 )   181 - 188   1998.7

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  • Photoinduced alignment of polymer liquid crystals containing azobenzene moieties in the side chain. 3. Effect of structure of photochromic moieties on alignment behavior

    YL Wu, Y Demachi, O Tsutsumi, A Kanazawa, T Shiono, T Ikeda

    MACROMOLECULES   31 ( 14 )   4457 - 4463   1998.7

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  • All-optically controllable polymer liquid crystal composite films containing the azobenzene liquid crystal

    HK Lee, A Kanazawa, T Shiono, T Ikeda, T Fujisawa, M Aizawa, B Lee

    CHEMISTRY OF MATERIALS   10 ( 5 )   1402 - 1407   1998.5

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  • Living polymerization of propane and 1-hexene with the [t-BuNSiMe(2)Flu]TiMe2/B(C6F5)(3) catalyst

    H Hagihara, T Shiono, T Ikeda

    MACROMOLECULES   31 ( 10 )   3184 - 3188   1998.5

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  • Femtosecond dynamics and stimulated emission from the S-2 state of a liquid crystalline trans-azobenzene

    J Azuma, N Tamai, A Shishido, T Ikeda

    CHEMICAL PHYSICS LETTERS   288 ( 1 )   77 - 82   1998.5

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  • 表示・記録技術--概説 (特集 2次元情報処理用光機能材料--光波制御の新局面 Part3表示・記録技術)

    金沢 昭彦, 池田 富樹

    機能材料   18 ( 5 )   5 - 11   1998.5

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  • Photochemical phase-transition behavior of polymer liquid crystals induced by photochemical reaction of azobenzenes with strong donor-acceptor pairs

    O Tsutsumi, Y Demachi, A Kanazawa, T Shiono, T Ikeda, Y Nagase

    JOURNAL OF PHYSICAL CHEMISTRY B   102 ( 16 )   2869 - 2874   1998.4

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  • In situ photopolymerization behavior of a chiral liquid-crystalline monomer showing a ferroelectric phase.

    S Ogiri, A Kanazawa, T Shiono, T Ikeda, Nishiyama, I, JW Goodby

    MACROMOLECULES   31 ( 6 )   1728 - 1734   1998.3

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  • Photoinduced alignment of polymer liquid crystals containing azobenzene moieties in the side chain. 2. Effect of spacer length of the azobenzene unit on alignment behavior

    YL Wu, Y Demachi, O Tsutsumi, A Kanazawa, T Shiono, T Ikeda

    MACROMOLECULES   31 ( 4 )   1104 - 1108   1998.2

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  • Homogeneous alignment of nematic liquid crystal induced by polyimide exposed to linearly polarized light

    YH Wang, A Kanazawa, T Shiono, T Ikeda, Y Matsuki, Y Takeuchi

    APPLIED PHYSICS LETTERS   72 ( 5 )   545 - 547   1998.2

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  • Photoinduced alignment of polymer liquid crystals containing azobenzene moieties in the side chain. 1. Effect of light intensity on alignment behavior

    YL Wu, Y Demachi, O Tsutsumi, A Kanazawa, T Shiono, T Ikeda

    MACROMOLECULES   31 ( 2 )   349 - 354   1998.1

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  • Photochemical phase transition behavior of polymer azobenzene liquid crystals with electron-donating and -accepting substituents at the 4,4 '-positions

    O Tsutsumi, T Kitsunai, A Kanazawa, T Shiono, T Ikeda

    MACROMOLECULES   31 ( 2 )   355 - 359   1998.1

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  • Copolymerization of Propene and Atactic Polypropylene Macromonomer with an Isospecific Metallocene Catalyst.

    AZAD S M, 永直文, 塩野毅, 池田富樹

    高分子学会予稿集   47 ( 2 )   1998

  • Effect of Cocatalyst on α-Olefin Polymerization with rac- and meso-type ansa-Zirconocene Catalyst.

    永直文, 金沢昭彦, 塩野毅, 池田富樹

    高分子学会予稿集   47 ( 8 )   1998

  • Cyclocopolymerization of Propene and Nonconjugated Diene with Zirconocene Catalyst.

    永直文, 金沢昭彦, 塩野毅, 池田富樹

    高分子学会予稿集   47 ( 7 )   1998

  • Reflection-Mode Optical Switching of Polymer Azobenzene Liquid Crystal

    Atsushi Shishido, Osamu Tsutsumi, Akihiko Kanazawa, Takeshi Shiono, Tomiki Ikeda

    MOLECULAR CRYSTALS AND LIQUID CRYSTALS SCIENCE AND TECHNOLOGY SECTION A-MOLECULAR CRYSTALS AND LIQUID CRYSTALS   318   59 - 70   1998

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  • Reflection-Mode Optical Switching of Polymer Azobenzene Liquid Crystal

    TOMIKI IKEDA

    Mol. Cryst. Liq. Cryst.   318   59 - 70   1998

  • Photochemical Phase Transition Behavior of Polymer Azobenzene Liquid Crystals with a Rigid Core Introduced at a Different Position in a Flexible Side Chain

    Osamu Tsutsumi, Yasuo Miyashita, Shigenobu Hirano, Atsushi Shishido, Akihiko Kanazawa, Takeshi Shiono, Tomiki Ikeda

    MOLECULAR CRYSTALS AND LIQUID CRYSTALS SCIENCE AND TECHNOLOGY SECTION A-MOLECULAR CRYSTALS AND LIQUID CRYSTALS   312   33 - 44   1998

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  • Spacer Length Dependence of Tilt Angle of Mesogenic Chromophores of Side-Chain Liquid-Crystalline Polysiloxanes

    Makoto Hasegawa, Nobukatsu Nemoto, Yu Nagase, Yasuo Shirai, Jiro Abe, Tomiki Ikeda

    MOLECULAR CRYSTALS AND LIQUID CRYSTALS SCIENCE AND TECHNOLOGY SECTION A-MOLECULAR CRYSTALS AND LIQUID CRYSTALS   318   71 - 86   1998

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  • Time-resolved Study on Unconventional Fluorescence of an Azobenzene Liquid Crystal and its Phase Transition

    Jun Azuma, Atsushi Shishido, Tomiki Ikeda, Naoto Tamai

    MOLECULAR CRYSTALS AND LIQUID CRYSTALS SCIENCE AND TECHNOLOGY SECTION A-MOLECULAR CRYSTALS AND LIQUID CRYSTALS   314   83 - 88   1998

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  • Photopolymerization behavior of ferroelectric liquid-crystalline monomers

    Sayuri Ogiri, Hiroyuki Nakamura, Akihiko Kanazawa, Takeshi Shiono, Tomiki Ikeda

    Journal of Photopolymer Science and Technology   11 ( 2 )   193 - 198   1998

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    DOI: 10.2494/photopolymer.11.193

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  • Polymerization of Liquid-Crystalline Monomers with Biphenyl Moiety

    Sayuri Ogiri, Masanori Ikeda, Akihiko Kanazawa, Takeshi Shiono, Tomiki Ikeda, Haruyoshi Takatsu

    MOLECULAR CRYSTALS AND LIQUID CRYSTALS SCIENCE AND TECHNOLOGY SECTION A-MOLECULAR CRYSTALS AND LIQUID CRYSTALS   319   159 - 171   1998

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  • Orientational Dynamics in the Crystalline and Amorphous States of Side-Chain Liquid Crystalline Polysiloxanes Probed by Second Harmonic Generation

    TOMIKI IKEDA

    Polymer   40 ( 1 )   219 - 225   1998

  • Generation of Nematic Liquid Crystal Alignment with Polyimides Exposed to Linearly Polarized Light of Long Wavelength

    Y. Wang, A. Kanazawa, T, Shiono T. Ikeda, Y, Matsuki, Y. Takeuchi

    J. Appl. Phys.   84 ( 1 )   181 - 188   1998

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  • Control of molecular weight distribution of isotactic polypropylene obtained by a MgCl2-supported TiCl4 catalyst

    T Shiono, H Hagihara, T Ikeda, K Soga

    POLYMER   38 ( 26 )   6409 - 6411   1997.12

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  • 光に応答する液晶 (特集 身近な新素材(2))

    佐々木 健夫, 池田 富樹

    新素材   8 ( 6 )   90 - 95   1997.12

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  • Novelty of vinylidene-terminated polypropylene prepared by a MgCl2-supported TiCl4 catalyst combined with AlEt3 as cocatalyst

    T Shiono, KK Kang, H Hagihara, T Ikeda

    MACROMOLECULES   30 ( 20 )   5997 - 6000   1997.10

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  • Structural requirements for decarbonylative alpha,alpha-diarylation reaction of 2-methoxyalkanoic acids in phosphorus pentoxide-methanesulfonic acid mixture yielding 1,1-diarylalkane homologs

    N Yonezawa, T Hino, Y Tokita, K Matsuda, T Ikeda

    TETRAHEDRON   53 ( 42 )   14287 - 14296   1997.10

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  • Optical switching of antiferroelectric liquid crystals by photoisomerization of azo-group

    SHIROTA Koichiro, YAMAGUCHI Ichirou, KANIE Kiyoshi, HIYAMA Tamejiro, IKEDA Tomiki, KOBAYASHI Ichiro, SUZUKI Yoshiichi

    Preprints of Symposium on Liquid Crystals   23   438 - 439   1997.9

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    We have studied the optical switching properties of two kinds of antiferroelectric liquid crystals (AFLCs) containing an azobenzen moiety by Ar^+ laser light irradiation. In the case of an AFLC which has trifluoromethyl group connecting to the chiral center, the optical induced phase transition by Ar^+ laser irradiation was different from that by UV light irradiation. Using this phase transition, we have demonstrated the optical switching. In addition, we discovered the optical alignment effect in these AFLCs by linearly polarized Ar^+ laser light irradiation.

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  • 1PC02 Liquid Crystal Photonics : Effect of Structure of Phothochromic Moieties on Optical Alignment Process in Polymer Liquid Crystals

    WU Yiliang, SHISHIDO Atsushi, TSUTSUMI Osamu, KANAZAWA Akihiko, SHIONO Takeshi, IKEDA Tomiki

    Preprints of Symposium on Liquid Crystals   23   92 - 93   1997.9

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    Polymer liquid crystals (PLCs) with donor-acceptor type azobenzcne moieties (CNAB6) or common azobenzene moieties (AB6) in the side chain were synthesized Homogeneous alignment in the PLCs was induced by using linearly polarized light at 366 nm. Induced order parameter was measured at various irradiation temperaturres by using polarized UV spectroscopy. It was found that the alignment behavior was dependent on the structure of the azobenzene groups. The writing rate of AB6 was higher than that of CNAB6. When the writing light was switched off, discrete increase of the transmittance (positive relaxation) was observed in AB6, while no relaxation in CNAB6. The writing process of CNAB6 can be well dcscibed by a biexponential function. The behavior of azobenzene moieties during the alignment process was investigated. Higher concentration of cis-azobenzene was produced in AB6 during the alignment process. It is one of the reasons for higher writing rate and positive relaxation of AB6.

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  • Liquid Crystal Photonics : Formation of Photoinduced Diffraction Grating of Liquid-Crystalline Polysiloxane

    HASEGAWA Makoto, KANAZAWA Akihiko, SHIONO Takeshi, IKEDA Tomiki, NEMOTO Nobukatsu, NAGASE Yu

    Preprints of Symposium on Liquid Crystals   23   88 - 89   1997.9

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    Formation of photoinduced diffraction grating within a thin film of a liquid-crystalline polysiloxane with azobenzene in the side chain was investigated. This polymer exhibited a smtectic C phase between 81 and 87℃, and a nematic phase between 87 and 109℃. Moreover, this polymer formed two kinds of solid state at room temperature: an amorphous state and a crystalline state. The crystalline-state sample was prepared by annealing after heating to the mesophase temperature, and the amorphous-state sample was obtained without heat treatment. The alignment of the mesogenic chromophores in the amorphous state is random, while the they form an interdigitated alignment in the crystalline state. The diffraction light was observed in both states by irradiation of two coherent beams. The diffraction efficiency in the crystalline state was smaller than that in the amorphous state. The diffraction efficiency and the rate of formation of the diffraction grating depend on the alignment of the mesogenic chromophores.

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  • Polymerization of Liquid-Crystalline Monomers : Liquid-Crystallinity and Photopolymerization Behavior of Ferroelectric Liquid-Crystalline Monomers

    ORIGI Sayuri, NAKAMURA Hiroyuki, KANAZAWA Akihiko, SHIONO Takeshi, IKEDA Tomiki, NISHIYAMA Isa

    Preprints of Symposium on Liquid Crystals   23   160 - 161   1997.9

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    To explore the effect of molecular packing in a liquid-crystalline phase, chiral liquid-crystalline methacrylate monomers with polymerizable group attached to the rigid core through a short methylene spacer (carbon number of 2) and a long methylene spacer (carbon number of 11) were synthesized. The monomers were found to exhibit chiral smectic C and smectic A phases by optical polarizing microscopy and DSC. The monomers were photopolymerized which 1-hydroxycyclohexyl phenyl ketone as a photoinitiator at various temperatures. The polymerization was carried out in a cell which was composed of two glass substrates with ITO electrodes. It w as found that reactivity of the monomer having a short spacer is higher than that of the monomer having a long spacer, Furthermore, the stored image obtained by photopolymerization in SmC^* phase has been stable for three months.

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  • 1PC01 Liquid Crystal Photonics : Optical Control of Nematic Liquid Crystals with Photosensitive Polyimides Alignment Layers Having Different Photoactive Moieties

    KIM Gi Heon, KANAZAWA Akihiko, SHIONO Takeshi, IKEDA Tomiki

    Preprints of Symposium on Liquid Crystals   23   90 - 91   1997.9

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    In this study, we used eight types of polyimides (PIs) which were prepared by thermal imidization of poly(amide acid)s as the precursor and evaluated the optical switching behavior of nematic liquid crystals (NLCs; 5CB and ZLI-4751) with the photosensitive PIs as alignment layer. The photosensitive PIs as alignment layer induced the optical switching of NLCs. The optical switching behavior of NLCs was dependent on the structure of PIs. We also found that the optical switching behavior was affected by degree of imidization, light intensity, temperature, and polarity of NLCs. The surface component of the PI shifted from the dispersion component to the polar component, which resulted in decrease of the surface tension between NUC and the PI film due to rubbing. The surface property of PI film was closely related to the optical switching behavior of NLCs.

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  • Rubbingless Control of Alignment of Nematic Liquid Crystal by Photosensitive Polyimide Alignment Layer

    WANG Yinghan, KANAZAWA Akihiko, SHIONO Takeshi, IKEDA Tomiki, MATSUKI Yasuo, TAKEUCHI Yasumasa

    Preprints of Symposium on Liquid Crystals   23   256 - 257   1997.9

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    The alignnaent behavior of liquid crystal (LC) on the surface of four types of polyimide (PI) films exposed to linearly polarized ultraviolet (LPUV) light was investigated with polarizing microscopy.We found that the homogeneous alignment of the LC was induced. The alignment ability of the PIs was strongly depen dent on the chemical structure of PIs and increased with increasing of the absorbed energy of the PIs. The change in the PI structure after UV exposure was evaluated by UV-VIS spectroscopy. The spectra showed that the absorbance change of the aromatic PIs is much smaller than that of the PI with an alicyclic dian hydride when uniform homogeneous alignment of the LC was caused. In particular, the change in the absorbance of the aromatic PI with ether group was only 0.05%. The results mean that the aromatic PIs are more favorable as a photosensitive alignment layer than the PI with an alicyclic moiety and the homogeneous alignment of the LCs can be induced without significant destruction of the chemical structure of PIs.

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  • Liquid Crystal Photonics : Control of Light by Polymer-Dispersed Liquid Crystals Induced by Photoisomerization of Azobenzene Molecules

    LEE Hyoung-Kwan, KANAZAWA Akihiko, SHIONO Takeshi, IKEDA Tomiki, FUJISAWA Toru, AIZAWA Masao, LEE Bong

    Preprints of Symposium on Liquid Crystals   23   272 - 273   1997.9

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    We prepared polymer-dispersed liquid crystals containing azobenzene derivatives as a photoresponsive molecule and evaluated their optical response induced by photoirradiation. The optical property of the films was found to be affected by the compositional ratio of each component. The composite film with optimal compositional ratio showed a strong light scattering in an initial state. The reversible change between a light-scattering state and a transparent state was achieved by alternating irradiation with UV light and visible light. This phenomenon is ascribed to nematic &xharr; isotropic photochemical phase transition induced by trans &xharr; cis photoisomerization of the azobenzene molecules.

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  • Liquid Crystal Photonics : Manipulation of Nematic Liquid Crystal by Photochemical Reaction of Donor-Acceptor Azobenzenes.

    TSUTSUMI Osamu, DEMACHI Yasuyuki, KANAZAWA Akihiko, SIONO Takeshi, IKEDA Tomiki

    Preprints of Symposium on Liquid Crystals   23   396 - 397   1997.9

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    Photochemical phase transition behavior of mixtures of donor-acceptor (D-A) type azobenzene liquid crystals (LCs) and 4-pentyl-4'-cyanobiphenyl (5CB) has been explored. Various kinds of the D-A type azobenzene LCs were prepared. trans-Azobenzene in the mixture stabilizes an LC phase, while cis isomer destabilizes the LC phase. Photoirradiation of very thin film (〜 200 nm) of the mixtures at 405 nm and 436 nm resulted in disappearance of the LC phase due to trans-cis photoisomerization of the azobenzenes, and the LC phase recovered when the irradiated sample was kept in the dark because of cis-trans thermal isomerization and reorientation of the mesogens. The thermal I-LC phase transition rate varied with structures of D and A: the LC phase recovered in 500 ms in a mixture of an azobenzene (with A = -NO_2 and D = -N<) and 5CB at 37℃.

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  • Molecular Alignment Behavior and Second-Order Nonlinear Optical Property of Termotropic Liquid-Crystalline Organic Cations without a Rigid Core

    KANAZAWA AKihiko, HASEGAWA Makoto, TSUTSUMI Osamu, IKEDA Tomiki, NAGASE Yu, ABE Jiro

    Preprints of Symposium on Liquid Crystals   23   388 - 389   1997.9

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    Thermotropic liquid-crystalline behavior of various organic cations without rigid cores was evaluated by differential scanning calorimetry, polarizing optical microscopy and X-ray diffractometry. The phosphonium salts and the metal-containing ammonium complexes were found to show smectic A phase in which a homeotropic structure was formed spontaneously. It is significant that these compounds possess advantageous feature as thermotropic liquid crystals and show a stable liquid-crystalline phase and a simple phase transition behavior in comparison with commonly available ammonium analogs. Furthermore, to explore the microstructure of the organic cations in a solid state, the second harmonic generation (SHG) was measured in transmission by means of the Maker fringe method. The liquid-crystalline phosphonium salts and metal-containing ammonium complexes were found to be active for SHG. The SHG activity was strongly affected by the molecular alignment in a solid state.

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  • Rapid optical switching by means of photoinduced change in refractive index of azobenzene liquid crystals detected by reflection-mode analysis

    A Shishido, O Tsutsumi, A Kanazawa, T Shiono, T Ikeda, N Tamai

    JOURNAL OF THE AMERICAN CHEMICAL SOCIETY   119 ( 33 )   7791 - 7796   1997.8

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  • Photochemical phase transition behaviour of polymer azobenzene liquid crystals with flexible siloxane units as a side-chain spacer

    A Kanazawa, S Hirano, A Shishido, M Hasegawa, O Tsutsumi, T Shiono, T Ikeda, Y Nagase, E Akiyama, Y Takamura

    LIQUID CRYSTALS   23 ( 2 )   293 - 298   1997.8

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  • Syndiospecific polymerization of propene with [t-BuNSiMe(2)Flu]TiMe2-based catalysts by chain-end controlled mechanism

    H Hagihara, T Shiono, T Ikeda

    MACROMOLECULES   30 ( 16 )   4783 - 4785   1997.8

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  • 液晶フォトニクス--光で液晶の配列を変え,液晶で光の性質を変える

    池田 富樹

    現代化学   ( 317 )   44 - 50   1997.8

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  • Novel thermotropic liquid crystals without a rigid core formed by amphiphiles having phosphonium ions

    A Kanazawa, O Tsutsumi, T Ikeda, Y Nagase

    JOURNAL OF THE AMERICAN CHEMICAL SOCIETY   119 ( 33 )   7670 - 7675   1997.8

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  • Photo-induced cationic ring-opening polymerization of 2-alkenyl-4-methylene-1,3-dioxolanes by benzylsulfonium salt

    Jaekyeung Park, Nobuhiro Kihara, Tomiki Ikeda, Takeshi Endo

    Macromolecules   30 ( 11 )   3414 - 3416   1997.6

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    DOI: 10.1021/ma9610222

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  • Synthesis of novel liquid-crystalline thiophene derivatives and evaluation of their photoresponsive behavior

    Y Nabeshima, A Shishido, A Kanazawa, T Shiono, T Ikeda, T Hiyama

    CHEMISTRY OF MATERIALS   9 ( 6 )   1480 - 1487   1997.6

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  • Photo-induced cationic ring-opening polymerization of 2-alkenyl-4-methylene-1,3-dioxolanes by benzylsulfonium salt

    J Park, N Kihara, T Ikeda, T Endo

    MACROMOLECULES   30 ( 11 )   3414 - 3416   1997.6

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  • Polymerization of Liquid-Crystalline Monomers : Polymerization and Molecular Alignment Behavior

    OGIRI Sayuri, KANAZAWA Akihiko, IKEDA Tomiki

    Journal of the Adhesion Society of Japan   33 ( 4 )   150 - 157   1997.4

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  • Charge-transfer interaction in liquid-crystalline materials and their application to photonics

    O Tsutsumi, A Kanazawa, T Shiono, T Ikeda

    MACROMOLECULAR SYMPOSIA   116   117 - 126   1997.4

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  • Polymer liquid crystals Reviewed

    A Kanazawa, T Ikeda

    SEN-I GAKKAISHI   53 ( 4 )   P113 - P117   1997.4

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  • Distinct photochemical phase transition behavior of azobenzene liquid crystals evaluated by reflection-mode analysis

    A Shishido, O Tsutsumi, A Kanazawa, T Shiono, T Ikeda, N Tamai

    JOURNAL OF PHYSICAL CHEMISTRY B   101 ( 15 )   2806 - 2810   1997.4

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  • 液晶フォトニクス (特集 フラットパネルディスプレ-)

    金沢 昭彦, 池田 富樹

    化学工業   48 ( 3 )   260 - 266   1997.3

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  • Liqid Crystal Photonics-Control of Various Properties by Light-

    IKEDA Tomiki

    50 ( 2 )   202 - 204   1997.2

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  • Photochemical phase transition behavior of nematic liquid crystals with azobenzene moieties as both mesogens and photosensitive chromophores

    O Tsutsumi, T Shiono, T Ikeda, G Galli

    JOURNAL OF PHYSICAL CHEMISTRY B   101 ( 8 )   1332 - 1337   1997.2

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  • Synthesis of aluminum-terminate polypropylene by a MgCl2-supported TiCl4 catalyst combined with Al(i-Bu)(3) as cocatalyst

    KK Kang, T Shiono, T Ikeda

    MACROMOLECULES   30 ( 4 )   1231 - 1233   1997.2

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  • Rapid Optical Switching by Means of Photoinduced Change in Refractive Index of Azobenzene Liquid Crystals Detected by Reflection-Mode Analysis

    A. Shishido, O. Tsutsumi, A. Kanazawa, T, Shiono T, Ikeda N. Tamai

    J. Am. Chem. Soc.   119 ( 33 )   7791 - 7796   1997

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  • Effect of Siloxane Spacer on Photochemical Phase Transition Behavior of Polymer Liquid Crystals with Azobenzene Moieties in the Side Chain

    TOMIKI IKEDA

    Mol. Cryst. Liq. Cryst.   300   201 - 218   1997

  • Additive Effects of Lewis Bases on Propene Polymerization over MgCl┣D22┫D2-Supported TiCl┣D24┫D2 Catalysis Combined with Cp┣D22┫D2TiMe┣D22┫D2

    TOMIKI IKEDA

    Polym. J.   29 ( 3 )   224 - 229   1997

  • Additive effects of lewis bases on propene polymerization over MgCl2-supported TiCl4 catalysts combined with Cp2TiMe2

    Hideaki Hagihara, Takeshi Shiono, Tomiki Ikeda, Kazuo Soga

    Polymer Journal   29 ( 3 )   224 - 229   1997

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    DOI: 10.1295/polymj.29.224

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  • Liquid crystal photonics: Optical switching and image storage by means of nematic liquid crystals and ferroelectric liquid crystals

    A Shishido, O Tsutsumi, A Kanazawa, T Shiono, T Ikeda

    LIQUID CRYSTALS   3143   81 - 91   1997

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  • Liquid crystal photonics: Optical switching and image storage by means of nematic liquid crystals and ferroelectric liquid crystals

    Atsushi Shishido, Osamu Tsutsumi, Akihiko Kanazawa, Takeshi Shiono, Tomiki Ikeda

    Proceedings of SPIE - The International Society for Optical Engineering   3143   81 - 91   1997

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    DOI: 10.1117/12.279257

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  • Effect of siloxane spacer on photochemical phase transition behavior of polymer liquid crystals with azobenzene moieties in the side chain

    A Kanazawa, A Shishido, M Hasegawa, O Tsutsumi, T Shiono, T Ikeda, Y Nagase, E Akiyama, Y Takamura

    MOLECULAR CRYSTALS AND LIQUID CRYSTALS SCIENCE AND TECHNOLOGY SECTION A-MOLECULAR CRYSTALS AND LIQUID CRYSTALS   300   201 - 218   1997

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  • Liquid crystal photonics: Optical switching and image storage by means of nematic liquid crystals and ferroelectric liquid crystals

    Tomiki Ikeda, Osamu Tsutsumi, Takeo Sasaki

    Synthetic Metals   81 ( 2-3 )   289 - 296   1996.8

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  • Charge transfer interaction in liquid-crystalline materials and their application to photonics.

    T Ikeda, O Tsutsumi

    ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY   211   189 - POLY   1996.3

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  • 分子配向の光制御

    堤 治, 池田 富樹

    化学   51   270-271   1996

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  • Liquid-Crystal Photonics : Optical Switching and Image Storage by Means of Azobenzene Liquid-Crystal Films

    TOMIKI IKEDA

    Mat. Res. Soc. Symp. Proc.   425   213 - 224   1996

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  • Photochemical switching of ferroelectric liquid crystals using a photoswitchable chiral dopant

    M Negishi, O Tsutsumi, T Ikeda, T Hiyama, J Kawamura, M Aizawa, S Takehara

    CHEMISTRY LETTERS   ( 4 )   319 - 320   1996

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  • Synthesis and photochemical switching of the antiferroelectric liquid crystals containing a diazenediyl group

    M Negishi, K Kanie, T Ikeda, T Hiyama

    CHEMISTRY LETTERS   ( 8 )   583 - 584   1996

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  • Synthesis and photochemical switching of the antiferroelectric liquid crystals containing a diazenediyl group

    Makoto Negishi, Kiyoshi Kanie, Tomiki Ikeda, Tamejiro Hiyama

    Chemistry Letters   ( 8 )   583 - 584   1996

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    DOI: 10.1246/cl.1996.583

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  • Liquid-Crystal Photonics : Optical Switching and Image Storage by Means of Azobenzene Liquid-Crystal Films

    TOMIKI IKEDA

    Mat. Res. Soc. Symp. Proc.   425   213 - 224   1996

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  • Image Storage and Optical Switching by means of Photoresponsive Liquid-crystal Films

    KANAZAWA Akihiko, IKEDA Tomiki

    The Journal of the Institute of Image Electronics Engineers of Japan   24 ( 6 )   698 - 705   1995.12

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  • Synthesis of Photoswitchable Chiral Dopant and Evaluation of Photochemical Switching of Ferroelectric Liquid Crystals.

    Negishi M., Tsutsumi O., Ikeda T., Hiyama T., Kawamura J., Aizawa M., Takehara S.

    Preprints of Symposium on Liquid Crystals   21   248 - 249   1995.9

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    The S_C^* phase is induced by chiral dopants. Therefore, the chiral dopants strongly affect the phase behavior of the resulting ferroelectric liquid crystals(FLCs). In this study, we synthesized a photochromic chiral dopant containing an azobenzene moiety and investigated the FLC behavior of the mixture of the chiral dopant and host LC. We further explored the photochemical switching behavior of the mixture by steady-state and time-resolved measurement. We found that trans→cis photoisomerization of the chiral dopant effectively caused disappearance of the S_C^* phase and cis→trans back isomerization restored the S_C^* phase.

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  • Polymerization of Liquid-Crystalline Monomers : Photopolymerization Behavior in Ferroelectric and Antiferroelectric Phases and Effect of Orientation

    Ogiri S., Shiono T., Ikeda T., Nishiyama I.

    Preprints of Symposium on Liquid Crystals   21   266 - 267   1995.9

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    Diffusion and orientation of monomers generally influence the polymerization behavior. In order to explore the effect of orientation on polymerization behavior, the liquid-crystalline vinyl monomer was synthesized which exhibited antiferroelectric, ferrielectric, ferroelectric, smectic A, and isotropic phases. Monomer was polymerized with benzoin as a photoinitiator at various temperatures. Photoirradiation was carried out in a cell which was composed of glass substrates with ITO electrodes. The cells were made with 20 μm spacings where the inner surfaces were washed and 2 μm spacings where the inner surfaces had been coated with a polyimide aligning agent and unidirectionally rubbed. The course of the polymerization was followed by gel permeation chromatography. It was found that the conversion in smectic A phase in 20 μm cell and ferroelectric phase in 2 μm cell under applied electric field was highest in the two types of the cells. Liquid-crystalline properties of produced polymers were also investigated.

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  • Liquid-Crystalline Materials for Photonics : Synthesis of Novel Liquid Crystals Containing Thiophene Units and Evaluation of Their Photoresponse

    Nabeshima Y., Tsutsumi O., Shiono T., Ikeda T., Hiyama T.

    Preprints of Symposium on Liquid Crystals   21   122 - 123   1995.9

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    In order to develop novel materials for photonics, we synthesized various compounds containing thiophene units in which electrons are easily polarized. Among those prepared, 4'-n-hexylazobenzene-4-yl-thiophene-2-acrylate (TA6) showed nematic (N) phase when the azobenzen moiety in the molecule was in the trans form while no liquid-crystalline phase when the azobenzene was in the cis form. Photoirradiation of TA6 in a cell to bring about the trans-cis isomerization resulted in disappearance of the N phase. The N phase was restored when the irradiated sample was kept in the dark.

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  • Liquid-Crystalline Materials for Photonics : Optical Switching by Means of Photochemically Induced Change in Refractive Index of Photoresponsive Liquid Crystals

    Shishido A., Tsutsumi O., Shiono T., Ikeda T.

    Preprints of Symposium on Liquid Crystals   21   6 - 7   1995.9

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    The change in refractive index of liquid-crystalline azobenzenes induced by nanosecond laser pulse was investigated with reference to optical switching. The photoresponsive liquid crystals show nematic phase in the trans form while no liquid-crystalline phase in the cis form. Intensity of reflected light from interface between sample and glass substrate depends on refractive indices of both materials, and hence the change in refractive index of sample results in change in the intensity of the reflected light. We measured the intensity of the reflected light at 633 nm (He-Ne laser) from the interface and found that the reflected light rose up in 100 ms on pulse irradiation at 355 nm (YAG laser, the third harmonic, 10 ns FWHM) and decayed in 1 ms. The decay was 1000 times faster than those observed in the transmittance-mode measurements. The fast decay may be due to different mechanism in the reflection-mode measurements. At first, molecules in the cis form diffuse into molecules in the trans form which did not photoisomerize. Next, the molecules in the trans form reorient on the glass surface. By the use of the reflection-mode light probe, we successfully obtained more rapid change in optical switching than that of the transmittance-mode light probe.

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  • Liquid-Crystalline Materials for Photonics : Photochemical Phase Transition Behavior of Polymer Azobenzene Liquid Crystals and Optical Image Storage with the Aid of Glass Transition

    Ueno K., Hirano S., Tsutsumi O., Shiono T., Ikeda T.

    Preprints of Symposium on Liquid Crystals   21   432 - 433   1995.9

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    We have studied photonic control of light by means of photochemical reaction of liquid-crystalline azobenzene derivatives. In this study, we used polymer azobenzene liquid crystals(LCs) which showed nematic phase in trans form while no liquid-crystalline phase in cis form. Photoirradiation of the polymer azobenzene LCs to bring about trans-cis isomerization (〜360 nm) resulted in disappearance of the nematic phase. The nematic phase was restored when the irradiated sample was kept at temperatures above Tg in the dark because of cis-trans thermal back isomerization followed by reorientation of the trans-azobenzenes. However, when the irradiated sample was kept at temperatures below Tg, the nematic phase did not recover even though the trans form was restored thermally. These results indicate that Tg is a crucial factor to determine the stability of the optical image stored in polymer azobenzene LCs.

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  • Liquid-Crystalline Materials for Photonics : Optical Swtching Driven by Photoisomerization of Azobenzene Liquid Crystal

    Tsutsumi Osamu, Ueno Keiko, Hirano Sigenobu, Shiono Takeshi, Ikeda Tomiki

    Preprints of Symposium on Liquid Crystals   21   430 - 431   1995.9

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    Optical switching has been explored by the use of liquid-crystalline(LC) material with photosensitive moleties. Polymeric push-pull type azobenzene was prepared, which shows nematic(N) LC behavior in the trans form while no LC phase in the cis isomer. Photoirradiation at 366 nm of very thin film (〜100 nm) of the liquid-crystalline azobenzene derivative in the trans form resulted in disappearance of the N phase due to trans-cis photoisomerization of each mesogen, and the N phase recovered rapidly when the irradiated sample was kept at high temperature in the dark because of cis-trans thermal isomerization and reorientation of the mesogenic trans-azobenzenes. Time-resolved measurement by the use of a laser pulse (355 nm; 10 ns FWHM) revealed that N to isotropic (I) phase transition took place in 200 μs. The N-I phase transition was also induced in 200 μs even at room temperature. The thermal I-N phase transition occurred in 1 s at 135 ℃. In addition, irradiation of visible light (>420 nm) after irradiation of the pumping light accelerated the I-N phase transition.

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  • Liquid-Crystalline Materials for Photonics : Optical Switching and Image Storage by Means of Azobenzene Liquid Crystals

    Tsutsumi Osamu, Ueno Keiko, Hirano Shigenobu, Shiono Takeshi, Ikeda Tomiki

    Proceedings of the Society Conference of IEICE   1995 ( 2 )   317 - 318   1995.9

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  • PHOTOCHEMICAL CONTROL OF PROPERTIES OF FERROELECTRIC LIQUID-CRYSTALS .3. PHOTOCHEMICALLY INDUCED REVERSIBLE CHANGE IN SPONTANEOUS POLARIZATION AND ELECTROOPTIC PROPERTY

    T SASAKI, T IKEDA

    JOURNAL OF PHYSICAL CHEMISTRY   99 ( 34 )   13013 - 13018   1995.8

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  • PHOTOCHEMICAL BEHAVIOR OF TETHERED DIANTHRYL COMPOUNDS IN SOL-GEL GLASS

    M UEDA, HB KIM, T IKEDA, K ICHIMURA

    JOURNAL OF MATERIALS CHEMISTRY   5 ( 6 )   889 - 894   1995.6

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  • A NOVEL-APPROACH TO MODE OF ACTION OF CATIONIC BIOCIDES - MORPHOLOGICAL EFFECT ON ANTIBACTERIAL ACTIVITY

    A KANAZAWA, T IKEDA, T ENDO

    JOURNAL OF APPLIED BACTERIOLOGY   78 ( 1 )   55 - 60   1995.1

  • 液晶フォトニクス

    宍戸厚, 堤 治, 池田 富樹

    化学工業   46   817-824   1995

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  • Photochemical Control of Properties of Ferroelectric Liquid Crystals (3) : Photochemically Induced Reversible Change in Spontaneous Polarization and Electrooptic Property

    TOMIKI IKEDA

    J. Phys. Chem.   99 ( 34 )   13013 - 13018   1995

  • A novel approach to mode of action of cationic biocides morphological effect on antibacterial activity

    A. Kanazawa, T. Ikeda, T. Endo

    Journal of Applied Bacteriology   78 ( 1 )   55 - 60   1995

  • Photochemical control of properties of ferroelectric liquid crystals. 1. Effect of structure of host ferroelectric liquid crystals on the photochemical switching of polarization

    Takeo Sasaki, Tomiki Ikeda

    Journal of Physical Chemistry   99 ( 34 )   13002 - 13007   1995

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  • Photochemical Control of Properties of Ferroelectric Liquid Crystals (1) : Effect of Structure of Host Ferroelectric Liquid Crystals on the Photochemical Switching of Polarization

    TOMIKI IKEDA

    J. Phys. Chem.   99 ( 34 )   13002 - 13007   1995

  • Photochemical Control of Properties of Ferroelectric Liquid Crystals (2) : Effect of the Structure of Guest Photoresponsive Molecules on the Photochemical Switching of Polarization

    TOMIKI IKEDA

    J. Phys. Chem.   99 ( 34 )   13008 - 13012   1995

  • Photochemical control of properties of ferroelectric liquid crystals. 2. Effect of the structure of guest photoresponsive molecules on the photochemical switching of polarization

    Takeo Sasaki, Tomiki Ikeda

    Journal of Physical Chemistry   99 ( 34 )   13008 - 13012   1995

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  • 液晶フォトニクス材料:光スイッチングと光記録

    池田 富樹, 堤 治, 榎本信太郎

    高分子加工   44   2-9   1995

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  • 液晶フォトニクス

    池田 富樹, 堤 治

    光化学   19   34-41   1995

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  • 液晶光駆動

    堤 治, 宍戸厚, 池田 富樹

    光技術コンタクト   33   475-482   1995

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  • POLYMERIC PHOSPHONIUM SALTS AS A NOVEL CLASS OF CATIONIC BIOCIDES .10. ANTIBACTERIAL ACTIVITY OF FILTERS INCORPORATING PHOSPHONIUM BIOCIDES

    A KANAZAWA, T IKEDA, T ENDO

    JOURNAL OF APPLIED POLYMER SCIENCE   54 ( 9 )   1305 - 1310   1994.11

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  • 高分子ホスホニウム塩抗菌剤--表面抗菌活性を発現する高分子材料

    金沢 昭彦, 池田 富樹, 遠藤 剛

    表面   32 ( 10 )   p638 - 643   1994.10

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  • Liquid Crystalline Materials for Photonics : Optical Switching Driven by Photochemical Reaction of Nematic Liquid Crystals

    Tsutsumi Osamu, Ikeda Tomiki

    Preprints of Symposium on Liquid Crystals   20   126 - 127   1994.9

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  • Excimer formation of 5CB in liquid crystal

    Shirokura S., Ohnishi H., Ohtsuka T., Ikeda T.

    Preprints of Symposium on Liquid Crystals   20   130 - 131   1994.9

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  • POLYMERIC PHOSPHONIUM SALTS AS A NOVEL CLASS OF CATIONIC BIOCIDES .7. SYNTHESIS AND ANTIBACTERIAL ACTIVITY OF POLYMERIC PHOSPHONIUM SALTS AND THEIR MODEL COMPOUNDS CONTAINING LONG ALKYL CHAINS

    A KANAZAWA, T IKEDA, T ENDO

    JOURNAL OF APPLIED POLYMER SCIENCE   53 ( 9 )   1237 - 1244   1994.8

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  • POLYMERIC PHOSPHONIUM SALTS AS A NOVEL CLASS OF CATIONIC BIOCIDES .8. SYNERGISTIC EFFECT ON ANTIBACTERIAL ACTIVITY OF POLYMERIC PHOSPHONIUM AND AMMONIUM-SALTS

    A KANAZAWA, T IKEDA, T ENDO

    JOURNAL OF APPLIED POLYMER SCIENCE   53 ( 9 )   1245 - 1249   1994.8

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  • POLYMERIC PHOSPHONIUM SALTS AS A NOVEL CLASS OF CATIONIC BIOCIDES .9. EFFECT OF SIDE-CHAIN LENGTH BETWEEN MAIN-CHAIN AND ACTIVE GROUP ON ANTIBACTERIAL ACTIVITY

    A KANAZAWA, T IKEDA, T ENDO

    JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY   32 ( 10 )   1997 - 2001   1994.7

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  • PI-CONJUGATED POLY(PYRIDINE-2,5-DIYL), POLY(2,2'-BIPYRIDINE-5,5'-DIYL), AND THEIR ALKYL DERIVATIVES - PREPARATION, LINEAR STRUCTURE, FUNCTION AS A LIGAND TO FORM THEIR TRANSITION-METAL COMPLEXES, CATALYTIC REACTIONS, N-TYPE ELECTRICALLY CONDUCTING PROPERTIES, OPTICAL-PROPERTIES, AND ALIGNMENT ON SUBSTRATES

    T YAMAMOTO, T MARUYAMA, ZH ZHOU, T ITO, T FUKUDA, Y YONEDA, F BEGUM, T IKEDA, S SASAKI, H TAKEZOE, A FUKUDA, K KUBOTA

    JOURNAL OF THE AMERICAN CHEMICAL SOCIETY   116 ( 11 )   4832 - 4845   1994.6

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    DOI: 10.1021/ja00090a031

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  • MOLECULAR ARRANGEMENTS AND POLYCONDENSATION OF LONG-CHAIN ESTERS OF AMINO-ACIDS CONTAINING AN AROMATIC RING IN LANGMUIR-BLODGETT-FILMS

    H NAKAHARA, K HAYASHI, Y SHIBASAKI, K FUKUDA, T IKEDA, M SISIDO

    THIN SOLID FILMS   244 ( 1-2 )   1055 - 1060   1994.5

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  • POLYMERIC PHOSPHONIUM SALTS AS A NOVEL CLASS OF CATIONIC BIOCIDES .6. ANTIBACTERIAL ACTIVITY OF FIBERS SURFACE-TREATED WITH PHOSPHONIUM SALTS CONTAINING TRIMETHOXYSILANE GROUPS

    A KANAZAWA, T IKEDA, T ENDO

    JOURNAL OF APPLIED POLYMER SCIENCE   52 ( 5 )   641 - 647   1994.5

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  • SYNTHESIS AND ANTIMICROBIAL ACTIVITY OF DIMETHYL-SUBSTITUTED AND TRIMETHYL-SUBSTITUTED PHOSPHONIUM SALTS WITH ALKYL CHAINS OF VARIOUS LENGTHS

    A KANAZAWA, T IKEDA, T ENDO

    ANTIMICROBIAL AGENTS AND CHEMOTHERAPY   38 ( 5 )   945 - 952   1994.5

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  • PHOTOCHEMICAL CONTROL OF PROPERTIES OF FERROELECTRIC LIQUID-CRYSTALS - PHOTOCHEMICAL FLIP OF POLARIZATION

    T SASAKI, T IKEDA, K ICHIMURA

    JOURNAL OF THE AMERICAN CHEMICAL SOCIETY   116 ( 2 )   625 - 628   1994.1

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  • Photochemical Switching of Polarization in 3-Ring Ferroelectric Liquid Crystalline Display Materials

    TOMIKI IKEDA

    Display and Imaging   2   305 - 308   1994

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  • Polymeric Phosphonium Salts as a Novel Class of Cationic Biocides. VII. Synthesis and Antibacterial Activity of Polymeric Phosphonium Salts and Model Compounds Containing Long Alkyl Chain

    TOMIKI IKEDA

    J. Appl. Polym. Sci.   53 ( 9 )   1237 - 1244   1994

  • 液晶フォトニクス材料

    池田 富樹, 堤 治, 榎本信太郎

    表面   32   446-452   1994

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  • 液晶フォトニクス材料:ネマチック液晶と強誘電性液晶を用いたスイッチング

    池田 富樹, 堤 治, 榎本信太郎

    有機分子・バイオエレクトロニクス分科会会誌   5   241-250   1994

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  • Polymeric Phosphonium Salts as a Novel Class of Cationic Biocides. VI. Antibacterial Activity of Fibers Surface-Treated with Phosphonium Salts Containing Trimethoxysilane Groups

    TOMIKI IKEDA

    J. Appl. Polym. Sci.   52 ( 5 )   641 - 647   1994

  • Synthesis and Antimicrobial Activity of Dimethyl-and Trimethyl-Substituted Phosphonium Salts with Long Alkyl Chains

    TOMIKI IKEDA

    Antimicrob. Agents Chemother.   38   945 - 952   1994

  • Photochemical Switching of Polarization in 3-Ring Ferroelectric Liquid Crystalline Display Materials

    TOMIKI IKEDA

    Display and Imaging   2   305 - 308   1994

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  • PHOTOISOMERIZABILITY OF AN AZOBENZENE COVALENTLY ATTACHED TO SILICA-GEL MATRIX

    M UEDA, HB KIM, T IKEDA, K ICHIMURA

    JOURNAL OF NON-CRYSTALLINE SOLIDS   163 ( 2 )   125 - 132   1993.11

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  • POLYMERIC PHOSPHONIUM SALTS AS A NOVEL CLASS OF CATIONIC BIOCIDES .4. SYNTHESIS AND ANTIBACTERIAL ACTIVITY OF POLYMERS WITH PHOSPHONIUM SALTS IN THE MAIN-CHAIN

    A KANAZAWA, T IKEDA, T ENDO

    JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY   31 ( 12 )   3031 - 3038   1993.11

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  • POLYMERIC PHOSPHONIUM SALTS AS A NOVEL CLASS OF CATIONIC BIOCIDES .5. SYNTHESIS AND ANTIBACTERIAL ACTIVITY OF POLYESTERS RELEASING PHOSPHONIUM BIOCIDES

    A KANAZAWA, T IKEDA, T ENDO

    JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY   31 ( 12 )   3003 - 3011   1993.11

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  • ANTIBACTERIAL ACTIVITY OF POLYMERIC SULFONIUM SALTS

    A KANAZAWA, T IKEDA, T ENDO

    JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY   31 ( 11 )   2873 - 2876   1993.10

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    DOI: 10.1002/pola.1993.080311126

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  • Liquid Crystalline Photonic Materials : Effect of Molecular Structures of Three-Ring Ferroelectric Liquid Crystals on Photochemical Flip of Polarization.

    SASAKI Takeo, IKEDA Tomiki, ICHIMURA Kunihiro

    Preprints of Symposium on Liquid Crystals   19   146 - 147   1993.9

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  • Liquid Crystalline Photonic Materials : Effect of Structure of Guest Photoresponsive Molecule on Response of the Guest/Host Mixtures

    IKEDA Tomiki, SASAKI Takeo, MIYAMOTO Tsuyoshi

    Preprints of Symposium on Liquid Crystals   19   144 - 145   1993.9

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  • Photoisomerization of an Azobenzene Liquid Crystal Observed by STM

    UMEMOTO Takeshi, ISHIKAWA Ken, TAKEZOE Hideo, FUKUDA Atsuo, SASAKI Takeo, Ikeda Tomiki

    Preprints of Symposium on Liquid Crystals   19   318 - 319   1993.9

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  • A NOVEL IMAGING-SYSTEM BY DYE-SENSITIZED PHOTOOXIDATION OF OXAZOLE GROUPS ATTACHED TO A POLYMER BACKBONE

    H ITO, T IKEDA, K ICHIMURA

    MAKROMOLEKULARE CHEMIE-MACROMOLECULAR CHEMISTRY AND PHYSICS   194 ( 8 )   2215 - 2224   1993.8

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  • A NOVEL IMAGING-SYSTEM BY DYE-SENSITIZED PHOTOOXIDATION OF OXAZOLE GROUPS ATTACHED TO A POLYMER BACKBONE .3. EFFECT OF THE SENSITIZER ON PHOTOOXIDATION IN THIN-FILMS

    H ITO, T IKEDA, K ICHIMURA

    MACROMOLECULES   26 ( 17 )   4533 - 4538   1993.8

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  • PHOTO-OPTICAL LIQUID-CRYSTAL CELLS DRIVEN BY MOLECULAR ROTORS

    K ICHIMURA, Y HAYASHI, H AKIYAMA, T IKEDA, N ISHIZUKI

    APPLIED PHYSICS LETTERS   63 ( 4 )   449 - 451   1993.7

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  • PHOTOISOMERIZATION OBSERVED BY MEANS OF SCANNING-TUNNELING-MICROSCOPY

    T UMEMOTO, K ISHIKAWA, H TAKEZOE, A FUKUDA, T SASAKI, T IKEDA

    JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS   32 ( 7A )   L936 - L939   1993.7

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  • POLYMERIC PHOSPHONIUM SALTS AS A NOVEL CLASS OF CATIONIC BIOCIDES .2. EFFECTS OF COUTER ANION AND MOLECULAR-WEIGHT ON ANTIBACTERIAL ACTIVITY OF POLYMERIC PHOSPHONIUM SALTS

    A KANAZAWA, T IKEDA, T ENDO

    JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY   31 ( 6 )   1441 - 1447   1993.5

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  • POLYMERIC PHOSPHONIUM SALTS AS A NOVEL CLASS OF CATIONIC BIOCIDES .3. IMMOBILIZATION OF PHOSPHONIUM SALTS BY SURFACE PHOTOGRAFTING AND ANTIBACTERIAL ACTIVITY OF THE SURFACE-TREATED POLYMER-FILMS

    A KANAZAWA, T IKEDA, T ENDO

    JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY   31 ( 6 )   1467 - 1472   1993.5

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  • FLUORESCENCE BEHAVIOR OF POLYMER LIQUID-CRYSTALS WITH MESOGENIC CYANOBIPHENYL SIDE-CHAINS

    S KURIHARA, T IKEDA, S TAZUKE

    MACROMOLECULES   26 ( 7 )   1590 - 1594   1993.3

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  • PHOTOINITIATED CATIONIC POLYMERIZATION OF 2-ISOPROPENYL-4-METHYLENE-1,3-DIOXOLANE BY BENZYLSULFONIUM SALT

    J PARK, N KIHARA, T IKEDA, T ENDO

    JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY   31 ( 4 )   1083 - 1085   1993.3

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    DOI: 10.1002/pola.1993.080310432

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  • NOVEL POLYCATIONIC BIOCIDES - SYNTHESIS AND ANTIBACTERIAL ACTIVITY OF POLYMERIC PHOSPHONIUM SALTS

    A KANAZAWA, T IKEDA, T ENDO

    JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY   31 ( 2 )   335 - 343   1993.2

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  • IMAGE RECORDING IN POLYMER LIQUID-CRYSTALS

    T IKEDA, T SASAKI, S KURIHARA

    PROCEEDINGS OF THE JAPAN ACADEMY SERIES B-PHYSICAL AND BIOLOGICAL SCIENCES   69 ( 1 )   7 - 12   1993.1

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  • PHOTOISOMERIZATION AND THERMAL-ISOMERIZATION BEHAVIOR OF AZOBENZENE DERIVATIVES IN LIQUID-CRYSTALLINE POLYMER MATRICES

    T SASAKI, T IKEDA, K ICHIMURA

    MACROMOLECULES   26 ( 1 )   151 - 154   1993.1

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  • A Novel Imaging System by Dye-Sensitized Photooxidation of Oxazole Groups Attached to a Polymer Backbone. III. Effect of Sensitizers on Photooxidation in Thin Films

    TOMIKI IKEDA

    Macromolecules.   26 ( 17 )   4533 - 4538   1993

  • Photochemical Switching of Polarization in Ferroelectric Liquid Crystals : Effect of Structure of Host FLCs

    TOMIKI IKEDA

    Ferroelectrics   149   343 - 351   1993

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  • Photochemical Control of Switching Behaviors of Ferroelectric Polymer Liquid Crystals : Poly(2-methylbutyl 4'-(10-acryloyloxydecyloxy)biphenyl-4-carboxylate)

    TOMIKI IKEDA

    Mol. Cryst. Liq. Cryst.   225   67 - 79   1993

  • Photochemical Control of Switching Behaviors of Ferroelectric Polymer Liquid Crystals : Poly(2-methylbutyl 4'-(10-acryloyloxydecyloxy)biphenyl-4-carboxylate)

    TOMIKI IKEDA

    Mol. Cryst. Liq. Cryst.   225   67 - 79   1993

  • Photochemical switching of polarization in ferroelectric liquid crystals: Effect of structure of host flcs

    Takeo Sasaki, Tomiki Ikeda

    Ferroelectrics   149 ( 1 )   343 - 351   1993

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  • Photoisomerization of an Azobenzene Attached to Silica-Gel Matrix through Covalent Bonding

    TOMIKI IKEDA

    J. Non-Cryst. Solids.   163 ( 2 )   125 - 132   1993

  • Polymeric Phosphonium Salts as a Novel Class of Cationic Biocides. II. Effects of Counter Anion and Molecular Weight on Antibacterial Activity of Polymeric Phosphonium Salts

    TOMIKI IKEDA

    J. Polym. Sci. Part A : Polym. Chem   31 ( 6 )   1441 - 1447   1993

  • PHOTO-CROSS-LINKING OF COPOLYMERS OF VINYLOXYETHYL METHACRYLATE-STYRENE INITIATED BY SULFONIUM SALTS .2. PHOTO-CROSS-LINKING BEHAVIORS

    MP LIN, T IKEDA, T ENDO

    JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY   30 ( 12 )   2569 - 2576   1992.11

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  • PHOTOISOMERIZATION OF AN AZOBENZENE IN SOL-GEL GLASS-FILMS

    M UEDA, HB KIM, T IKEDA, K ICHIMURA

    CHEMISTRY OF MATERIALS   4 ( 6 )   1229 - 1233   1992.11

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  • PHOTO-CROSS-LINKING OF COPOLYMERS OF VINYLOXYETHYL METHACRYLATE STYRENE INITIATED BY SULFONIUM SALTS .1. TRANSIENT SPECIES FORMED ON PHOTOLYSIS OF SULFONIUM SALT

    MP LIN, HB KIM, T IKEDA, T ENDO

    JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY   30 ( 11 )   2365 - 2369   1992.10

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  • EFFECT OF TEMPERATURE ON EXCITATION HOPPING BETWEEN 2 ANTHRYL MOIETIES ATTACHED TO BOTH ENDS OF ALKANES EMBEDDED IN POLYMER MATRICES

    B LEE, T IKEDA, K ICHIMURA, S TAZUKE

    JOURNAL OF PHYSICAL CHEMISTRY   96 ( 21 )   8417 - 8423   1992.10

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  • 2D110 コマンドサーフェス12. シアノアゾベンゼン誘導体を用いた可視線偏光によるネマチック液晶の面内配向制御

    石月 紀男, 佐々木 健夫, 林 ゆう子, 池田 富樹, 市村 国宏

    液晶討論会講演予稿集   18   154 - 155   1992.9

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  • IMAGE-FORMATION BY DYE-SENSITIZED PHOTOOXYGENATION OF POLYMERS SUBSTITUTED WITH 4,5-DIPHENYLOXAZOLE MOIETIES

    K ICHIMURA, T IKEDA, H ITO

    MAKROMOLEKULARE CHEMIE-RAPID COMMUNICATIONS   13 ( 9 )   415 - 420   1992.9

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  • CHIRAL RECOGNITION AND MOLECULAR INTERACTION IN CELLULOSE DERIVATIVES

    K ITOH, T IKEDA, S TAZUKE, T SHIBATA

    JOURNAL OF PHYSICAL CHEMISTRY   96 ( 14 )   5759 - 5765   1992.7

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  • TIME-RESOLVED OBSERVATION OF PHOTOCHEMICAL PHASE-TRANSITION IN POLYMER LIQUID-CRYSTALS

    T SASAKI, T IKEDA, K ICHIMURA

    MACROMOLECULES   25 ( 14 )   3807 - 3811   1992.7

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  • PHOTOCROSS-LINKING OF POLYMERS INITIATED BY BENZYLSULPHONIUM SALTS AS CATIONIC INITIATORS .2. POLY(1,3-DIOXOLANE-4-METHYL METHACRYLATE) AND COPOLYMERS WITH METHYL-METHACRYLATE

    MP LIN, Y HAYASHI, T IKEDA, T ENDO

    JOURNAL OF MATERIALS SCIENCE   27 ( 11 )   2902 - 2907   1992.6

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  • PHOTOCROSS-LINKING OF POLYMERS INITIATED BY BENZYLSULPHONIUM SALTS AS CATIONIC INITIATORS .1. POLY(ETHYLENE-CO-GLYCIDYL METHACRYLATE)

    MP LIN, Y HAYASHI, T IKEDA, T ENDO

    JOURNAL OF MATERIALS SCIENCE   27 ( 11 )   2896 - 2901   1992.6

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  • PHOTO-CROSS-LINKING OF POLYMERS CONTAINING CATIONICALLY POLYMERIZABLE GROUPS IN THE SIDE-CHAIN BY SULFONIUM SALTS

    MP LIN, T IKEDA, T ENDO

    JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY   30 ( 5 )   933 - 936   1992.4

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    DOI: 10.1002/pola.1992.080300525

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  • STABILIZATION ENERGY OF THE 9,9'-TRIMETHYLENEDIANTHRACENE RADICAL CATION ESTIMATED BY THE CHARGE RESONANCE BAND

    A TSUCHIDA, H TAKAMURA, M YAMAMOTO, B LEE, T IKEDA, S TAZUKE

    BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN   65 ( 3 )   909 - 910   1992.3

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    DOI: 10.1246/bcsj.65.909

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  • 光機能性高分子液晶の進歩 (オプトエレクトロニクスを支える化学技術<特集>)

    池田 富樹

    化学工業   43 ( 1 )   p19 - 23   1992.1

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  • ORIENTATION CONTROL AND PHOTOPHYSICAL BEHAVIORS IN LB FILMS OF LONG-CHAIN DERIVATIVE OF AMINO-ACID CONTAINING AROMATIC RING

    H NAKAHARA, H ENDO, K FUKUDA, T IKEDA, M SISIDO

    MOLECULAR CRYSTALS AND LIQUID CRYSTALS   216-18   177 - 182   1992

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  • Photochemical Image Storage in Polymer Liquid Crystals

    TOMIKI IKEDA

    SPIE   1665   221 - 229   1992

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  • PHOTOCHEMICAL IMAGE STORAGE IN POLYMER LIQUID-CRYSTALS

    T IKEDA

    LIQUID CRYSTAL MATERIALS, DEVICES, AND APPLICATIONS   1665   221 - 229   1992

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  • Photocrosslinking of copolymers of vinyloxyethyl methacrylate‐styrene initiated by sulfonium salts. II. Photocrosslinking behaviors

    Mao‐Peng Lin, Tomiki Ikeda, Takeshi Endo

    Journal of Polymer Science Part A: Polymer Chemistry   30 ( 12 )   2569 - 2576   1992

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  • Image Formation by Dye-Sensitized Photooxygenation of Polymers Substituted with-phenyloxazole

    TOMIKI IKEDA

    Makromol. Chem. Rapid Commun.   13 ( 9 )   415 - 420   1992

  • TIME-RESOLVED OBSERVATION OF EXCITATION HOPPING BETWEEN 2 ANTHRYL MOIETIES ATTACHED TO BOTH ENDS OF POLYSTYRENE CHAINS

    T IKEDA, B LEE, H USHIKI, K HORIE

    JOURNAL OF CHEMICAL PHYSICS   95 ( 9 )   6877 - 6884   1991.11

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  • HOLE TRANSPORT IN LIQUID-CRYSTALLINE MEDIA .1. EFFECT OF MATRICES ON HOLE DRIFT MOBILITIES OF 1,2-TRANS-BIS (9H-CARBAZOL-9-YL)-CYCLOBUTANE DOPED IN POLYMER LIQUID-CRYSTALS

    T IKEDA, H MOCHIZUKI, Y HAYASHI, M SISIDO, T SASAKAWA

    JOURNAL OF APPLIED PHYSICS   70 ( 7 )   3689 - 3695   1991.10

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  • HOLE TRANSPORT IN LIQUID-CRYSTALLINE MEDIA .2. HOLE DRIFT MOBILITIES OF COPOLYMERS OF ACRYLATES WITH SIDE-CHAIN MESOGENS AND DIMERIC CARBAZOLES

    T IKEDA, H MOCHIZUKI, Y HAYASHI, M SISIDO, T SASAKAWA

    JOURNAL OF APPLIED PHYSICS   70 ( 7 )   3696 - 3702   1991.10

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  • ISOTHERMAL PHASE-TRANSITION OF LIQUID-CRYSTALS INDUCED BY PHOTOISOMERIZATION OF DOPED SPIROPYRANS

    S KURIHARA, T IKEDA, S TAZUKE, JE SETO

    JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS   87 ( 19 )   3251 - 3254   1991.10

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  • Photochemical Control of Orientation of Ferroelectric Liquid Crystals (2) : Photomodulation of Switching Behavior of Side-Chain Ferroelectric Polymer Liquid Crystal

    Ikeda Tomiki, Zushi Osamu, Sasaki Takeo, Ichimura Kunihiro, Fukuda Atsuo, Skarp Kent A. W.

    Preprints of Symposium on Liquid Crystals   17   248 - 249   1991.9

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  • Photochemical Control of Orientation of Ferroelectric Liquid Crystals (1) : Photochemical Flip-Flop of Low-Molecular Weight Ferroelectric Liquid Crystals

    Sasaki Takeo, Ikeda Tomiki, Ichimura Kunuhiro

    Preprints of Symposium on Liquid Crystals   17   246 - 247   1991.9

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  • UNIQUE OPTICAL AND ELECTROCHEMICAL PROPERTIES OF PI-CONJUGATED ELECTRICALLY CONDUCTING COPOLYMERS CONSISTING OF ELECTRON-WITHDRAWING PYRIDINE UNITS AND ELECTRON-DONATING THIOPHENE UNITS

    ZH ZHOU, T MARUYAMA, T KANBARA, T IKEDA, K ICHIMURA, T YAMAMOTO, K TOKUDA

    JOURNAL OF THE CHEMICAL SOCIETY-CHEMICAL COMMUNICATIONS   ( 17 )   1210 - 1212   1991.9

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  • PHOTOREACTIVITY AND EMISSION PROPERTIES OF LIQUID-CRYSTALLINE TWIN DIMERS CONTAINING CINNAMIC ACID MOIETIES AT BOTH ENDS OF ETHYLENE-GLYCOL SPACERS .2. EMISSION PROPERTIES

    T IKEDA, T IKEDA, T SASAKI, B LEE, S KURIHARA, S TAZUKE

    LIQUID CRYSTALS   9 ( 4 )   469 - 477   1991.4

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  • PHOTOREACTIVITY AND EMISSION PROPERTIES OF LIQUID-CRYSTALLINE TWIN DIMERS CONTAINING CINNAMIC ACID MOIETIES AT BOTH ENDS OF ETHYLENE-GLYCOL SPACERS .1. SYNTHESIS, THERMOTROPIC PROPERTIES AND PHOTOREACTIVITY

    T IKEDA, T IKEDA, T SASAKI, B LEE, S KURIHARA, S TAZUKE

    LIQUID CRYSTALS   9 ( 4 )   457 - 468   1991.4

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  • PHOTORESPONSIVE LIQUID-CRYSTALS PREPARED FROM POLY(BIPHENYLYL VINYL ETHER-ALT-MALEIC ANHYDRIDE)S

    T IKEDA, S HASEGAWA, T SASAKI, T MIYAMOTO, MP LIN, S TAZUKE

    MAKROMOLEKULARE CHEMIE-MACROMOLECULAR CHEMISTRY AND PHYSICS   192 ( 2 )   215 - 221   1991.2

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  • INTRINSIC RESPONSE OF POLYMER LIQUID-CRYSTALS IN PHOTOCHEMICAL PHASE-TRANSITION

    T IKEDA, T SASAKI, HB KIM

    JOURNAL OF PHYSICAL CHEMISTRY   95 ( 2 )   509 - 511   1991.1

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  • EMISSION PROPERTIES OF POLYMER LIQUID-CRYSTALS WITH SIDE-CHAIN MESOGENIC CYANOBIPHENYLS IN SOLUTION

    S KURIHARA, T IKEDA, S TAZUKE

    MACROMOLECULES   24 ( 2 )   627 - 628   1991.1

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    DOI: 10.1021/ma00002a048

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  • Isothermal Phase Transition of Liquid Crystals Induced by Photoisomerization of Doped Spiropyrans

    TOMIKI IKEDA

    J. Chem. Soc. Faraday Trans.   87 ( 19 )   3251 - 3254   1991

  • Time-Resolved Observation of Isothermal Phase Transition of Liquid Crystals Induced by Photoisomerization of Azobenzene Dopant

    TOMIKI IKEDA

    Mol. Cryst. Liq. Cryst.   195   251 - 263   1991

  • Photochemical phase transition of polymer liquid crystals.

    IKEDA TOMIKI, SASAKI TAKEO, ICHIMURA KUNIHIRO

    Journal of Photopolymer Science and Technology   4 ( 2 )   191 - 198   1991

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    Photochemical phase transition of polymer liquid crystals (PLCs) was explored for PLCs with mesogenic side-chain phenylbenzoate and cyanobiphenyl. The photochemical phase transition was triggered by photochemical reaction of photoresponsive molecules incorporated physically or covalently into PLCs as a result of lowering of phase transition temperature of the mixtures below the irradiation temperature. Factors affecting the photochemical phase transition are discussed and resolution of stored image was examined.

    DOI: 10.2494/photopolymer.4.191

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  • Photoresponsive Polymer Liquid Crystals.

    Ikeda Tomiki

    Kobunshi   40 ( 8 )   520 - 523   1991

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    DOI: 10.1295/kobunshi.40.520

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  • Photoresponsive Liquid Crystalline Materials Reviewed

    Tomiki Ikeda

    Sen'i Gakkaishi   47 ( 7 )   371 - 377   1991

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  • Time-Resolved Observation of Isothermal Phase Transition of Liquid Crystals Induced by Photoisomerization of Azobenzene Dopant

    TOMIKI IKEDA

    Mol. Cryst. Liq. Cryst.   195   251 - 263   1991

  • Photoresponsive Liquid Crystals Prepared from Poly(biphenyl vinyl ether-alt-maleic anhydride)s

    TOMIKI IKEDA

    Makromol. Chem.   192 ( 2 )   215 - 221   1991

  • Photochemical Phase Transition of Polymer Liquid Crystals

    TOMIKI IKEDA

    J. Photopolym. Sci. Technol.   4 ( 2 )   191 - 198   1991

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    Photochemical phase transition of polymer liquid crystals (PLCs) was explored for PLCs with mesogenic side-chain phenylbenzoate and cyanobiphenyl. The photochemical phase transition was triggered by photochemical reaction of photoresponsive molecules incorporated physically or covalently into PLCs as a result of lowering of phase transition temperature of the mixtures below the irradiation temperature. Factors affecting the photochemical phase transition are discussed and resolution of stored image was examined.

    DOI: 10.2494/photopolymer.4.191

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  • Photoreactivity and Emission Properties of Liquid Crystalline Twin Dimers Containing Cinnamic Acid Moieties at Both Ends of Ethylene Glycol Spacers. II. Emission Properties.

    TOMIKI IKEDA

    Liq. Cryst.   9 ( 4 )   469 - 477   1991

  • TIME-RESOLVED OBSERVATION OF ISOTHERMAL PHASE-TRANSITION OF LIQUID-CRYSTALS TRIGGERED BY PHOTOCHEMICAL-REACTION OF DOPANT

    S KURIHARA, T IKEDA, T SASAKI, HB KIM, S TAZUKE

    JOURNAL OF THE CHEMICAL SOCIETY-CHEMICAL COMMUNICATIONS   ( 24 )   1751 - 1752   1990.12

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  • EXCIMER-LIKE EMISSION FROM LINEAR PI-CONJUGATED POLY(PYRIDINE-2,5-DIYL)

    T YAMAMOTO, T MARUYAMA, T IKEDA, M SISIDO

    JOURNAL OF THE CHEMICAL SOCIETY-CHEMICAL COMMUNICATIONS   ( 19 )   1306 - 1307   1990.10

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  • 1K204 高分子液晶/低分子混合系の光相転移挙動

    池田 富樹, 宮本 剛, 田附 重夫

    液晶討論会講演予稿集   16   58 - 59   1990.9

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  • EXCIMER FORMATION KINETICS IN LIQUID-CRYSTALLINE ALKYLCYANOBIPHENYLS

    T IKEDA, S KURIHARA, S TAZUKE

    JOURNAL OF PHYSICAL CHEMISTRY   94 ( 17 )   6550 - 6555   1990.8

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  • PHOTOCHEMICALLY INDUCED ISOTHERMAL PHASE-TRANSITION IN POLYMER LIQUID-CRYSTALS WITH MESOGENIC CYANOBIPHENYL SIDE-CHAINS

    T IKEDA, S KURIHARA, DB KARANJIT, S TAZUKE

    MACROMOLECULES   23 ( 17 )   3938 - 3943   1990.8

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  • PHASE-SEPARATION IN PHOSPHOLIPID-BILAYERS INDUCED BY BIOLOGICALLY-ACTIVE POLYCATIONS

    T IKEDA, H YAMAGUCHI, S TAZUKE

    BIOCHIMICA ET BIOPHYSICA ACTA   1026 ( 1 )   105 - 112   1990.7

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  • TIME-RESOLVED OBSERVATION OF EXCITATION HOPPING BETWEEN 2 ANTHRYL MOIETIES ATTACHED TO BOTH ENDS OF ALKANES - SIMULATION BASED ON CONFORMATIONAL-ANALYSIS

    T IKEDA, B LEE, S TAZUKE, A TAKENAKA

    JOURNAL OF THE AMERICAN CHEMICAL SOCIETY   112 ( 12 )   4650 - 4656   1990.6

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  • 励起高分子の挙動

    池田 富樹

    高分子加工   39 ( 6 )   p277 - 283   1990.6

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  • EXCIMER FORMATION IN MAIN-CHAIN POLYMER LIQUID-CRYSTALS WITH MESOGENIC PARA-PHENYLENEDIACRYLIC ACIDS

    T IKEDA, CH LEE, T SASAKI, B LEE, S TAZUKE

    MACROMOLECULES   23 ( 6 )   1691 - 1695   1990.3

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  • TIME-RESOLVED FLUORESCENCE SPECTROSCOPY OF A TWISTED INTRAMOLECULAR CHARGE-TRANSFER COMPOUND BONDED TO POLYMERS

    S TAZUKE, RK GUO, T IKEDA

    JOURNAL OF PHYSICAL CHEMISTRY   94 ( 4 )   1408 - 1413   1990.2

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  • HIGH TERMINAL SEGMENT MOBILITY IN POLY(METHYL METHACRYLATE) AS STUDIED BY FLUORESCENCE PROBE METHOD

    S TAZUKE, RK GUO, T IKEDA, T IKEDA

    MACROMOLECULES   23 ( 4 )   1208 - 1211   1990.2

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  • TIME-RESOLVED FLUORESCENCE ANISOTROPY STUDIES ON THE INTERACTION OF BIOLOGICALLY-ACTIVE POLYCATIONS WITH PHOSPHOLIPID-MEMBRANES

    T IKEDA, B LEE, H YAMAGUCHI, S TAZUKE

    BIOCHIMICA ET BIOPHYSICA ACTA   1021 ( 1 )   56 - 62   1990.1

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  • PHOTOCHEMICALLY INDUCED ISOTHERMAL PHASE-TRANSITION IN POLYMER LIQUID-CRYSTALS WITH MESOGENIC PHENYL BENZOATE SIDE-CHAINS .1. CALORIMETRIC STUDIES AND ORDER PARAMETERS

    T IKEDA, S HORIUCHI, DB KARANJIT, S KURIHARA, S TAZUKE

    MACROMOLECULES   23 ( 1 )   36 - 42   1990.1

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  • PHOTOCHEMICALLY INDUCED ISOTHERMAL PHASE-TRANSITION IN POLYMER LIQUID-CRYSTALS WITH MESOGENIC PHENYL BENZOATE SIDE-CHAINS .2. PHOTOCHEMICALLY INDUCED ISOTHERMAL PHASE-TRANSITION BEHAVIORS

    T IKEDA, S HORIUCHI, DB KARANJIT, S KURIHARA, S TAZUKE

    MACROMOLECULES   23 ( 1 )   42 - 48   1990.1

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  • Photochemically Induced Isothermal Phase Transition in Liquid Crystals. Effects of Interaction of Photoresponsive Molecules with Matrix Mesogens

    TOMIKI IKEDA

    Mol. Cryst. Liq. Cryst. ,   178   117 - 132   1990

  • Effect of Structure of Photoresponsive Molecules on Photochemical Phase Transition of Liquid Crystals IV. Photochemical Phase Transition Behaviors of Photochromic Azobenzene Guest/Polymer Liquid Crystal Host Mixtures

    TOMIKI IKEDA

    Mol. Cryst. Liq. Cryst.   188   223 - 233   1990

  • Effect of Structure of Photoresponsive Molecules on Photochemical Phase Transition of Liquid Crystals IV. Photochemical Phase Transition Behaviors of Photochromic Azobenzene Guest/Polymer Liquid Crystal Host Mixtures

    TOMIKI IKEDA

    Mol. Cryst. Liq. Cryst.   188   223 - 233   1990

  • PHOTOCHEMICAL PHASE-TRANSITION BEHAVIORS OF TERNARY MIXTURES OF PHOTOCHROMIC AZOBENZENE DERIVATIVE, LOW-MOLECULAR-WEIGHT LIQUID-CRYSTAL AND POLYMER LIQUID-CRYSTAL .5.

    T IKEDA, T MIYAMOTO, T SASAKI, S KURIHARA, S TAZUKE

    MOLECULAR CRYSTALS AND LIQUID CRYSTALS   188   235 - &   1990

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  • Photochemical Phase Transition Behaviors of Ternary Mixtures of Photochromic Azobenzene Derivative, Low Molecular Weight Liquid Crystal and Polymer Liquid Crystal

    TOMIKI IKEDA

    Mol. Cryst. Liq. Cryst.   188   235 - 250   1990

  • Time-Resolved Fluorescence Spectroscopy of a Twisted Intramolecular Charge Transfer Compound Bonded to Polymers

    TOMIKI IKEDA

    J. Phys. Chem.   94 ( 4 )   1408 - 1413   1990

  • EFFECT OF STRUCTURE OF PHOTORESPONSIVE MOLECULES ON PHOTOCHEMICAL PHASE-TRANSITION OF LIQUID-CRYSTALS .1. SYNTHESIS AND THERMOTROPIC PROPERTIES OF PHOTOCHROMIC AZOBENZENE DERIVATIVES

    T IKEDA, T MIYAMOTO, S KURIHARA, M TSUKADA, S TAZUKE

    MOLECULAR CRYSTALS AND LIQUID CRYSTALS   182   357 - 371   1990

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  • EFFECT OF STRUCTURE OF PHOTORESPONSIVE MOLECULES ON PHOTOCHEMICAL PHASE-TRANSITION OF LIQUID-CRYSTALS .2. PHOTOCHEMICAL PHASE-TRANSITION BEHAVIORS OF PHOTOCHROMIC GUEST HOST MIXTURES

    T IKEDA, T MIYAMOTO, S KURIHARA, M TSUKADA, S TAZUKE

    MOLECULAR CRYSTALS AND LIQUID CRYSTALS   182   373 - 385   1990

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  • Effect of Structure of Photoresponsive Molecules on Photochemical Phase Transition of Liquid Crystals III. Photochemical Phase Transition Behaviors of Photochromic Azobenzene Guest/Ester Host Mixtures

    TOMIKI IKEDA

    Mol. Cryst. Liq. Cryst.   188   207 - 222   1990

  • Effect of Structure of Photoresponsive Molecules on Photochemical Phase Transition of Liquid Crystals III. Photochemical Phase Transition Behaviors of Photochromic Azobenzene Guest/Ester Host Mixtures

    TOMIKI IKEDA

    Mol. Cryst. Liq. Cryst.   188   207 - 222   1990

  • Molecular Weight Dependence of Antibacterial Activity in Cationic Disinfectants

    Tomiki Ikeda, Hideki Yamaguchi, Shigeo Tazuke

    Journal of Bioactive and Compatible Polymers   5 ( 1 )   31 - 41   1990

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  • Persistence of Ordering of 5CB above Phase Transition Temperature as Detected by Picosecond Time-Resolved Fluorescence Spectroscopy

    TOMIKI IKEDA

    Liq. Cryst. ,   7   749 - 752   1990

  • Persistence of ordering in 4-n-pentyl-4′-cyanobiphenyl above the nematic-isotropic transition as detected by picosecond time-resolved fluorescence spectroscopy

    Tomiki Ikeda, Seiji Kurihara, Shigeo Tazuke

    Liquid Crystals   7 ( 5 )   749 - 752   1990

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  • Photochemically Induced Isothermal Phase Transition in Liquid Crystals. Effects of Interaction of Photoresponsive Molecules with Matrix Mesogens

    TOMIKI IKEDA

    Mol. Cryst. Liq. Cryst. ,   178   117 - 132   1990

  • Excimer Formation Kinetics in Liquid Crystalline Alkyl Cyanobiphenyls

    TOMIKI IKEDA

    J. Phys. Chem. ,   94 ( 17 )   6550 - 6555   1990

  • IMPROVED HOLE DRIFT MOBILITY IN EXCIMER-FREE POLYMERS CONTAINING A DIMERIC CARBAZOLE UNIT

    T SASAKAWA, T IKEDA, S TAZUKE

    MACROMOLECULES   22 ( 11 )   4253 - 4259   1989.11

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  • Photoreactivities in Liquid Crystals Containing Cinnamic Acid Moieties

    Ikeda Takuya, Ikeda Tomiki, Tazuke Shigeo

    Preprints of Symposium on Liquid Crystals   15   210 - 211   1989.10

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  • Molecular Designs for High Effeciency on Photoinduced Phase Transition in Liquid Crystals

    Miyamoto T., Kurihara S., Ikeda T., Tazuke S.

    Preprints of Symposium on Liquid Crystals   15   208 - 209   1989.10

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  • 新しい光応答性高分子液晶 (新局面迎える液晶<特集>)

    池田 富樹

    化学工業   40 ( 10 )   p861 - 866   1989.10

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  • VERSATILE SETUP FOR PRESSURE AND TEMPERATURE-CONTROLLED TIME-RESOLVED EMISSION-SPECTROSCOPY

    T HIRAGA, T UCHIDA, N KITAMURA, HB KIM, T IKEDA, S TAZUKE

    REVIEW OF SCIENTIFIC INSTRUMENTS   60 ( 6 )   1008 - 1014   1989.6

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  • FLUORESCENCE POLARIZATION STUDY OF THE CURING PROCESS OF EPOXIDE WITH AMINIMIDE

    T IKEDA, S INUBUSHI, S TAZUKE

    JOURNAL OF APPLIED POLYMER SCIENCE   37 ( 10 )   2949 - 2959   1989.5

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  • EFFECT OF POLYMER MATRICES ON HOLE TRANSPORT OF 1,2-TRANS-BIS(9H-CARBAZOLE-9-YL) CYCLOBUTANE DISSOLVED IN A POLYMER BINDER

    T SASAKAWA, T IKEDA, S TAZUKE

    JOURNAL OF APPLIED PHYSICS   65 ( 7 )   2750 - 2755   1989.4

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  • NOVEL PRINCIPLE OF IMAGE RECORDING - PHOTOCHEMICALLY TRIGGERED PHYSICAL AMPLIFICATION OF PHOTORESPONSIVENESS IN MOLECULAR AGGREGATE SYSTEMS

    S TAZUKE, T IKEDA

    ACS SYMPOSIUM SERIES   381   209 - 223   1989

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  • Fluorescence Polarization Study of Curing Process of Epoxide with Aminimide

    TOMIKI IKEDA

    J. Appl. Polym. Sci.   37 ( 10 )   2949 - 2959   1989

  • TIME-RESOLVED OBSERVATION OF EXCITATION HOPPING BETWEEN 2 IDENTICAL CHROMOPHORES ATTACHED TO BOTH ENDS OF ALKANES

    T IKEDA, B LEE, S KURIHARA, S TAZUKE, S ITO, M YAMAMOTO

    JOURNAL OF THE AMERICAN CHEMICAL SOCIETY   110 ( 25 )   8299 - 8304   1988.12

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  • TOPOCHEMICAL PHOTODIMERIZATION IN POLYMER LIQUID-CRYSTALS

    T IKEDA, H ITAKURA, CH LEE, FM WINNIK, S TAZUKE

    MACROMOLECULES   21 ( 12 )   3536 - 3537   1988.12

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    DOI: 10.1021/ma00190a038

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  • PHOTOCHEMICAL IMAGE STORAGE IN POLYMER LIQUID-CRYSTALS

    T IKEDA, S HORIUCHI, DB KARANJIT, S KURIHARA, S TAZUKE

    CHEMISTRY LETTERS   ( 10 )   1679 - 1682   1988.10

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  • MODULATION OF THE DIELECTRIC-CONSTANT OF THE LIQUID-CRYSTAL SYSTEM BY MEANS OF PHOTOCHROMISM

    S KURIHARA, T IKEDA, S TAZUKE

    JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS   27 ( 10 )   L1791 - L1792   1988.10

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  • LASER-INDUCED ELECTRON LIBERATION FROM CARBAZOLE-CONTAINING BILAYER-MEMBRANES IN AQUEOUS SYSTEMS

    H NAKAMURA, H FUJII, H SAKAGUCHI, T MATSUO, N NAKASHIMA, K YOSHIHARA, T IKEDA, S TAZUKE

    JOURNAL OF PHYSICAL CHEMISTRY   92 ( 21 )   6151 - 6156   1988.10

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  • Photoinduced phase transition in liquid crystals : Interaction of photoresponsive molecules with matrix mesogens.

    Kurihara S., Karanjit D. B., Horiuchi S., Ikeda T., Tazuke S.

    Preprints of Symposium on Liquid Crystals   14   214 - 215   1988.9

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  • Amplified Image Storage in Polymer Liquid Crystals

    Horiuchi S., Karanjit D. B., Kurihara S., Ikeda T., Tazuke S.

    Preprints of Symposium on Liquid Crystals   14   282 - 283   1988.9

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  • TOUGH EPOXY-RESINS CURED WITH AMINIMIDES

    S INUBUSHI, T IKEDA, S TAZUKE, T SATOH, Y KUMAGAI

    JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY   26 ( 7 )   1779 - 1789   1988.7

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  • EXCELLENT FLEXURAL PROPERTIES OF AMINIMIDE-CURED EPOXY-RESIN AS A MATRIX FOR MICA-DISPERSED POLYMER COMPOSITES

    S INUBUSHI, T IKEDA, S TAZUKE, T SATOH, Y TERADA, Y KUMAGAI

    JOURNAL OF MATERIALS SCIENCE   23 ( 4 )   1182 - 1188   1988.4

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  • PHOTOFLUIDIZATION OF PHOSPHOLIPID MEMBRANE INDUCED BY ISOMERIZATION OF AZOBENZENE AMPHIHILES AT VARYING DEPTH IN THE MEMBRANE

    H YAMAGUCHI, T IKEDA, S TAZUKE

    CHEMISTRY LETTERS   ( 3 )   539 - 542   1988.3

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  • AMINIMIDE-CURED EPOXY-RESINS AS SURFACE MODIFIERS FOR MICA FLAKES IN PARTICLE-REINFORCED THERMOPLASTICS

    S INUBUSHI, T IKEDA, S TAZUKE, T SATOH, Y KUMAGAI

    JOURNAL OF MATERIALS SCIENCE   23 ( 2 )   535 - 540   1988.2

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  • Photochemical Image Storage in Polymer Liquid Crystals

    TOMIKI IKEDA

    Chem. Lett. ,   ( 10 )   1679 - 1682   1988

  • Photoisomerization of Azobenzene Derivatives in Liquid Crystals : Effect of Structural Perturbation on Liquid Crystalline Matrices

    Kurihara S., Horiuchi S., Ikeda T., Tazuke S.

    Preprints of Symposium on Liquid Crystals   13   162 - 163   1987.9

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  • Photophysics in Liquid Crystalline Systems : Steady-State and Time-Resolved Fluorescence Behavior in Cyanobiphenyl Derivatives

    Kurihara S., Ikeda T., Tazuke S.

    Preprints of Symposium on Liquid Crystals   13   160 - 161   1987.9

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  • SYNTHESIS AND ELECTRICAL-CONDUCTIVITY OF POLYMERS CONTAINING TRANS-1,2-BIS(9-CARBAZOLYL)CYCLOBUTANE UNITS

    P SUBRAMANIAM, T SASAKAWA, T IKEDA, S TAZUKE, M SRINIVASAN

    JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY   25 ( 6 )   1463 - 1474   1987.6

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  • THERMAL-DECOMPOSITION BEHAVIOR OF BIS-AMINIMIDES AND THEIR APPLICATION TO POLYMERIZATION OF EPOXIDE

    S INUBUSHI, T IKEDA, S TAZUKE, T SATOH

    JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY   25 ( 5 )   1363 - 1382   1987.5

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  • SYNTHESIS OF NEW POLYAMIDES HAVING IN-CHAIN TRANS-1,2-DICARBAZOLYLCYCLOBUTANE UNITS AND THEIR SPECTROSCOPIC PROPERTIES

    P SUBRAMANIAM, T SASAKAWA, T IKEDA, S TAZUKE

    MAKROMOLEKULARE CHEMIE-MACROMOLECULAR CHEMISTRY AND PHYSICS   188 ( 5 )   1147 - 1155   1987.5

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  • SUPERIOR PROPERTIES OF AMINIMIDE-CURED EPOXY-RESIN AS A MATRIX FOR MICA-REINFORCED PLASTICS

    S INUBUSHI, T IKEDA, S TAZUKE, T SATOH, Y KUMAGAI

    JOURNAL OF MATERIALS SCIENCE LETTERS   6 ( 2 )   229 - 231   1987.2

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  • PHOTOCHEMICALLY TRIGGERED PHYSICAL AMPLIFICATION OF PHOTORESPONSIVENESS

    S TAZUKE, S KURIHARA, H YAMAGUCHI, T IKEDA

    JOURNAL OF PHYSICAL CHEMISTRY   91 ( 2 )   249 - 251   1987.1

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    DOI: 10.1021/j100286a001

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  • THERMAL-DECOMPOSITION BEHAVIOR OF MONO-AMINIMIDES AND THEIR APPLICATION TO POLYMERIZATION OF EPOXIDE

    S INUBUSHI, T IKEDA, S TAZUKE, T SATOH

    JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY   25 ( 1 )   137 - 150   1987.1

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  • AMPLIFIED IMAGE RECORDING IN LIQUID-CRYSTAL MEDIA BY MEANS OF PHOTOCHEMICALLY TRIGGERED PHASE-TRANSITION

    S TAZUKE, S KURIHARA, T IKEDA

    CHEMISTRY LETTERS   ( 5 )   911 - 914   1987

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  • ANTI-ABRASION AND LOW-FRICTION PROPERTIES OF SOLID LUBRICANT - AMINIMIDE-CURED EPOXY-RESIN COMPOSITES

    M YOSHIKAWA, T SATOH, S INUBUSHI, T IKEDA, S TAZUKE

    JOURNAL OF MATERIALS SCIENCE LETTERS   5 ( 12 )   1239 - 1241   1986.12

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  • POLYCATIONIC BIOCIDES WITH PENDANT ACTIVE GROUPS - MOLECULAR-WEIGHT DEPENDENCE OF ANTIBACTERIAL ACTIVITY

    T IKEDA, H HIRAYAMA, H YAMAGUCHI, S TAZUKE, M WATANABE

    ANTIMICROBIAL AGENTS AND CHEMOTHERAPY   30 ( 1 )   132 - 136   1986.7

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  • ENANTIOSELECTIVE PHOTOISOMERIZATION OF 1,3-BIS(9-ANTHRYL)PROPAN-1-OL IN POLY(METHYL-L-GLUTAMATE) MATRIX

    S TAZUKE, Y MIYAMOTO, T IKEDA, K TACHIBANA

    CHEMISTRY LETTERS   ( 6 )   953 - 956   1986.6

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  • METAL SALT CATALYZED TRANSESTERIFICATIONS OF THIOESTERS AND THEIR APPLICATION TO POLYESTER SYNTHESES

    T SASAKAWA, H TAKASAKI, T IKEDA, S TAZUKE

    MAKROMOLEKULARE CHEMIE-MACROMOLECULAR CHEMISTRY AND PHYSICS   187 ( 3 )   547 - 552   1986.3

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  • BIOLOGICALLY-ACTIVE POLYCATIONS .6. POLYMERIC PYRIDINIUM SALTS WITH WELL-DEFINED MAIN CHAIN STRUCTURE

    T IKEDA, H HIRAYAMA, K SUZUKI, H YAMAGUCHI, S TAZUKE

    MAKROMOLEKULARE CHEMIE-MACROMOLECULAR CHEMISTRY AND PHYSICS   187 ( 2 )   333 - 340   1986.2

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  • Photoresponsive function in biological membranes and artificial systems.

    IKEDA Tomiki, KURIHARA Seiji, TAZUKE Shigeo

    MEMBRANE   11 ( 6 )   314 - 325   1986

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    Language:Japanese   Publisher:THE MEMBRANE SOCIETY OF JAPAN  

    Photoresponsive functions of rhodopsin (Rh) in visual cells of vertebrates and bacteriorhodopsin (bR), a photo-driven proton pump in Halobacteria, are reviewed. In both systems, photoisomerization of retinal moieties attached to opsin takes place very fast and this local change in conformation results in the change in conformation of Rh and bR. The photosignals are finally transformed into electrochemical potentials across the membranes. In the visual cells, successive amplifications of the initial photosignals take place in a sophisticated way, which has not been fully understood. In the course of the amplifications, change in physical properties such as conformation and phase seems to play an important roll. In order to achieve highly efficient photoresponsiveness in artificial systems, use of such changes in physical properties as a way of amplification may be highly appreciated. Artificial photoresponsive systems reported recently are discussed in relation to photoresponsiveness in nature.

    DOI: 10.5360/membrane.11.314

    CiNii Books

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    Other Link: https://jlc.jst.go.jp/DN/JALC/00171536995?from=CiNii

  • Metal Salts Catalyzed Exchange Reactions of Thiophenol Esters and Their Application to Polyester Synthesis

    TOMIKI IKEDA

    Makromol. Chem.   187   547 - 552   1986

  • Self-Sterilizing Materials. 2. Evaluation of Surface Antibacterial Activity

    Tomiki Ikeda, Hideki Yamaguchi, Shigeo Tazuke

    Journal of Bioactive and Compatible Polymers   1 ( 3 )   301 - 308   1986

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  • Self-Sterilizing Materials. 1. Controlled Release of Biguanide Biocides from Polymeric Materials

    Tomiki Ikeda, Hideki Yamaguchi, Sigeo Tazuke

    Journal of Bioactive and Compatible Polymers   1 ( 2 )   162 - 171   1986

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  • BIOCIDAL POLYCATIONS

    T IKEDA, S TAZUKE

    ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY   189 ( APR- )   172 - POLY   1985

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  • INTERACTION OF MEMBRANE-ACTIVE BIGUANIDES WITH NEGATIVELY CHARGED SPECIES - A MODEL FOR THEIR INTERACTION WITH TARGET SITES IN MICROBIAL MEMBRANES

    T IKEDA, S TAZUKE, CH BAMFORD

    JOURNAL OF CHEMICAL RESEARCH-S   S,M ( 6 )   180 - 181   1985

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  • Spectroscopic Studies of the Interaction of Polymeric In-chain Biguanide with Phospholipid Bilayers as Probed by 8-Anilinonaphthalene-1-sulfonate

    TOMIKI IKEDA

    Bull. Chem. Soc. Jpn.   58 ( 2 )   705 - 709   1985

  • SPECTROSCOPIC STUDIES ON THE INTERACTION OF POLYMERIC IN-CHAIN BIGUANIDE BIOCIDE WITH PHOSPHOLIPID-MEMBRANES AS PROBED BY 8-ANILINONAPHTHALENE-1-SULFONATE

    T IKEDA, S TAZUKE, CH BAMFORD, A LEDWITH

    BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN   58 ( 2 )   705 - 709   1985

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  • INTERACTION OF A POLYMERIC BIGUANIDE BIOCIDE WITH PHOSPHOLIPID-MEMBRANES

    T IKEDA, A LEDWITH, CH BAMFORD, RA HANN

    BIOCHIMICA ET BIOPHYSICA ACTA   769 ( 1 )   57 - 66   1984

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  • PHOTOINDUCED AND RADIATION-INDUCED DEGRADATION OF VINYL-POLYMERS IN SOLUTION .4. RADIATION-INDUCED DEGRADATION OF POLY(ALPHA-METHYLSTYRENE) IN SOLUTION

    T IKEDA, HS VONEULERCHELPIN, S OKAMURA, H YAMAOKA

    MACROMOLECULES   17 ( 9 )   1655 - 1659   1984

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  • NEW POLYMERIC BIOCIDES - SYNTHESIS AND ANTIBACTERIAL ACTIVITIES OF POLYCATIONS WITH PENDANT BIGUANIDE GROUPS

    T IKEDA, H YAMAGUCHI, S TAZUKE

    ANTIMICROBIAL AGENTS AND CHEMOTHERAPY   26 ( 2 )   139 - 144   1984

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  • BIOLOGICALLY-ACTIVE POLYCATIONS .4. SYNTHESIS AND ANTIMICROBIAL ACTIVITY OF POLY(TRIALKYLVINYLBENZYLAMMONIUM CHLORIDE)S

    T IKEDA, S TAZUKE, Y SUZUKI

    MAKROMOLEKULARE CHEMIE-MACROMOLECULAR CHEMISTRY AND PHYSICS   185 ( 5 )   869 - 876   1984

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  • PHOTOINDUCED AND RADIATION-INDUCED DEGRADATION OF VINYL-POLYMERS IN SOLUTION .4. RADIATION-INDUCED DEGRADATION OF POLY(ALPHA-METHYLSTYRENE) IN SOLUTION

    T IKEDA, HS VONEULERCHELPIN, S OKAMURA, H YAMAOKA

    MACROMOLECULES   17 ( 9 )   1655 - 1659   1984

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  • INTERACTION OF BIOLOGICALLY-ACTIVE MOLECULES WITH PHOSPHOLIPID-MEMBRANES .1. FLUORESCENCE DEPOLARIZATION STUDIES ON THE EFFECT OF POLYMERIC BIOCIDE BEARING BIGUANIDE GROUPS IN THE MAIN CHAIN

    T IKEDA, S TAZUKE, M WATANABE

    BIOCHIMICA ET BIOPHYSICA ACTA   735 ( 3 )   380 - 386   1983

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  • BIOLOGICALLY-ACTIVE POLYCATIONS - ANTI-MICROBIAL ACTIVITIES OF POLY[TRIALKYL(VINYLBENZYL)AMMONIUM CHLORIDE] TYPE POLYCATIONS

    T IKEDA, S TAZUKE

    MAKROMOLEKULARE CHEMIE-RAPID COMMUNICATIONS   4 ( 7 )   459 - 461   1983

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  • PHOTOINDUCED AND RADIATION-INDUCED DEGRADATION OF VINYL-POLYMERS IN SOLUTION .5. RADIATION-INDUCED DEGRADATION OF POLYMETHACRYLONITRILE IN SOLUTION

    H YAMAOKA, K NAGATA, T IKEDA, S OKAMURA

    RADIATION PHYSICS AND CHEMISTRY   18 ( 5-6 )   1073 - 1079   1981

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  • Photo-and Radiation-Induced Degradation of Vinyl Polymers in Solution. 3. Transient Species during Photosensitized Degradation of Poly-α-methylstyrene by Benzophenone

    TOMIKI IKEDA

    J. Phys. Chem.   82 ( 21 )   2329 - 2334   1978

  • Photo-and Radiation-Induced Degradation of Vinyl Polymers in Solution. 2. Photo-sensitized Degradation of Poly-α-methylstyrene by Benzophenone

    TOMIKI IKEDA

    Macromolecules   11 ( 4 )   735 - 739   1978

  • Photo-and Radiation-Induced Degradation of Vinyl Polymers in Solution. 1. Oxidative Degradation of Poly-α-methylstyrene Initiated by Photodecomposition of AIBN

    TOMIKI IKEDA

    J. Polym. Sci. Polym. Chem. Ed.   15   2971 - 2979   1977

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  • Photosensitized Degradation of Polystyrene and Poly-α-methylstyrene in Solution by Benzo phenone

    TOMIKI IKEDA

    Macromolecules   10 ( 3 )   717 - 718   1977

  • Photosensitized Degradation of Polystyrene and Poly-α-methylstyrene in Solution by Benzo phenone

    TOMIKI IKEDA

    Macromolecules   10 ( 3 )   717 - 718   1977

  • Degradation of Poly-α-methylstyrene Initiated by Photoexcited Triphenylmethyl Cation

    TOMIKI IKEDA

    Macromolecules   10 ( 6 )   1417 - 1418   1977

  • Degradation of Poly-α-methylstyrene Initiated by Photoexcited Triphenylmethyl Cation

    TOMIKI IKEDA

    Macromolecules   10 ( 6 )   1417 - 1418   1977

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Awards

  • The 54th Ichimura Prize in Science for Distinguished Achievement

    2021  

    Tomiki Ikeda

  • The Commendation for Science and Technology by the Minister of Education, Science and Technology; Awards for Science and Technology in Research Category

    2021   Minister of Education, Science and Technology  

    Tomiki Ikeda

  • The Society of Polymer Science, Japan (SPSJ) Award for Outstanding Achievement in Polymer Science and Technology

    2018   Society of Polymer Science, Japan   Creation of Photofunctional Materials with Liquid-Crystalline Polymersn

    Tomiki Ikeda

  • 光化学協会功績賞

    2018   「液晶フォトニクス材料の開拓と応用展開」

    池田 富樹

  • 日本液晶学会功績賞

    2018   「液晶フォトニクスに関する先駆的研究」

    池田 富樹

  • 日本化学会賞

    2009   「協同現象を利用した新しい光機能材料の創出」

    池田 富樹

  • 日本液晶学会論文賞

    2009   「Photomobile Polymer Materials: Towards Light- Driven Plastic Motors」 Angew. Chem. Int. Ed. 47, 4986-4988 (2008)」

    池田 富樹

  • The Award of the Society of Polymer Science, Japan (2003)

    2003  

  • 高分子学会賞

    2003   「フォトクロミック液晶高分子の創出と機能材料への応用」

  • 日本液晶学会論文賞

    2002   「Supramolecular Polar Thin Films Built by Surfactant Liquid Crystals: Polarization-Tunable Multilayer Self-Assemblies with In-Plane Ferroelectric Ordering of Ion-Based Dipoles」J. Am. Chem. Soc. 123, 1748-1754 (2001)」

  • The Award of the Japanese Liquid Crystal Society

    1999  

  • 日本液晶学会賞業績賞

    1999   「液晶を基材とするフォトニクス材料の創製と液晶フォトニクスへの展開」

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Research Projects

  • Fabrication of Photomobile Materials into Any Size with the Aid of Porous Liquid-Crystalline Polymers

    Grant number:19K22220  2019.6 - 2021.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Challenging Research (Exploratory)  Chuo University

    Ikeda Tomiki

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    Grant amount: \6500000 ( Direct Cost: \5000000 、 Indirect Cost: \1500000 )

    We developed photomobile polymer materials with porous structures to control mechanical and photoresponsive properties. Polyurethanes containing azobenzene moieties in main chains were synthesized through polyaddition. These polymers exhibited high processability both in melt and solution processes. The films of these polymers showed reversible bending behavior upon irradiation with UV and visible light. In addition, porous structures in crosslinked liquid-crystalline polymers were controlled by applying macromonomers for polymerization and crosslinking. These achievements in enhancing processability and controlling porous structures enable various designs of photomobile polymer materials.

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  • Creation of Polymer Soft Crystals with Photofunctional Properties

    Grant number:18H04524  2018.4 - 2020.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)  Chuo University

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    Grant amount: \5070000 ( Direct Cost: \3900000 、 Indirect Cost: \1170000 )

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  • Free molding of crosslinked liquid crystalline polymers with dynamic covalent bonds and programing of their photomobile properties

    Grant number:17K19161  2017.6 - 2019.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Challenging Research (Exploratory)  Chuo University

    Ikeda Tomiki, Ube Toru, Tsunoda Haruna, Matsushita Masaya

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    Grant amount: \6500000 ( Direct Cost: \5000000 、 Indirect Cost: \1500000 )

    We developed crosslinked liquid-crystalline polymers (CLCPs) with rearrangeable networks to control molecular alignment and macroscopic shapes. Photoalignment technique was successfully applied to CLCPs with dynamic covalent bonds in side chains. Furthermore, processability of CLCPs was drastically enhanced by incorporation of dynamic covalent bonds into main chains. These strategies of photoalignment and processing allow various shapes and motions of polymer photoactuators.

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  • Precise control of polymer actuators by two-photon processes

    Grant number:17H05271  2017.4 - 2019.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)  Chuo University

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    Grant amount: \7930000 ( Direct Cost: \6100000 、 Indirect Cost: \1830000 )

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  • Mechanism of Photomobile Behavior of Polymers at Cryogenic Temperatures

    Grant number:16H04157  2016.4 - 2019.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)  Chuo University

    Ikeda Tomiki, Ube Toru, Hashimoto Gaku, Ogikubo Shunya

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    Grant amount: \17810000 ( Direct Cost: \13700000 、 Indirect Cost: \4110000 )

    We investigated photoinduced deformation of crosslinked photochromic liquid-crystalline polymers under cryogenic conditions in relation to molecular structures. On photoirradiation under vacuum, photothermal effects were found to play significant roles in deformation of films. Adequate design of liquid-crystalline monomers allowed photoinduced deformation of the films even in liquid nitrogen, which prevents the rise in temperature.

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  • 二光子で駆動する高分子光アクチュエーターの開発

    Grant number:15H01095  2015.4 - 2017.3

    日本学術振興会  科学研究費助成事業  新学術領域研究(研究領域提案型)  中央大学

    池田 富樹

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    Grant amount: \8320000 ( Direct Cost: \6400000 、 Indirect Cost: \1920000 )

    アゾベンゼンなどのフォトクロミック液晶部位を有する架橋液晶高分子(光運動材料)は,光照射により様々な三次元運動を示すため,遠隔操作可能なアクチュエーターとしての利用が期待されている。従来の光運動材料は一光子吸収過程に基づいており,高濃度クロモフォア系では試料表面近傍のみで光吸収が起こる。光運動材料に二光子吸収過程を適用することができれば,バルク内部のフォトクロミック分子の異性化による発生応力の向上や,励起部位の三次元的な選択による精密駆動が期待できる。本研究では,二光子で駆動する架橋液晶高分子の開発をめざした。
    二光子吸収クロモフォアとしてスチルベン誘導体,フォトクロミック液晶部位としてアゾトラン誘導体を用い,エネルギー移動型架橋液晶高分子を作製した。アゾトラン液晶モノマーと,スチルベン誘導体を含むドデシルメタクリレートを逐次的に重合・架橋して相互侵入高分子網目構造(IPN)を形成することにより複合化を行った。IPNフィルムにフェムト秒レーザーを照射すると,フィルムは光源方向へ屈曲した。これは,試料表面近傍においてスチルベンが二光子励起されてアゾトランへエネルギー移動し,アゾトランのトランス-シス異性化が起こるためであると考えている。二光子駆動においてはレーザーの照射スポットサイズが100ミクロン程度であるにも関わらず,フィルムのマクロな屈曲が生じた。このことは,一光子駆動の場合に比べて局所的な変形が大きいことを示している。二光子駆動では試料表面のみならずバルク内部のアゾトランも変形に寄与するために大変形が起こると推察している。以上のように,スチルベンと架橋アゾトラン液晶高分子の複合化により二光子で駆動する高分子光アクチュエーターの開発に成功し,光アクチュエーター駆動の高分解能化を可能にした。

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  • Control of nanostructures of organic semiconductors by using liquid crystalline-polymer brushes

    Grant number:15K13712  2015.4 - 2017.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Challenging Exploratory Research  Chuo University

    Ikeda Tomiki, UBE Toru

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    Grant amount: \3900000 ( Direct Cost: \3000000 、 Indirect Cost: \900000 )

    We developed surface-grafted polymer brushes containing liquid-crystalline semiconducting moieties in side chains aiming at precise control of nanostructures in organic devices. We synthesized semiconducting monomers containing perylene diimide (PDI), phthalocyanine and oligothiophene moieties. Among them, PDI monomers showed high reactivity for forming polymer brushes through surface-initiated atom transfer radical polymerization (SI-ATRP). The shape of the absorption spectrum of the polymer brush was similar to that of monomer, confirming the surface modification by PDI. Atomic force microscopy (AFM) images showed PDI domains with the widths in the order of ten nanometers. Furthermore, we prepared donor/acceptor heterostructures by spincoating poly(3-hexyl thiophene) (P3HT) on a PDI polymer brush film. It was confirmed that P3HT was successfully introduced into the PDI polymer brush film, thanks to the insolubility of surface-initiated polymer brushes.

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  • 異種界面接合を基盤とする高分子光運動材料の構築

    Grant number:21225006  2009 - 2013

    日本学術振興会  科学研究費助成事業  基盤研究(S)  東京工業大学

    池田 富樹, 鷲尾 方一, 栗原 清二, 塩野 毅, 川月 喜弘, 金澤 昭彦

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    Grant amount: \106210000 ( Direct Cost: \81700000 、 Indirect Cost: \24510000 )

    本研究課題では,液晶の分子構造,相状態,分子配向や高分子の架橋密度など種々の項目を検討し最適化するとともに,電子線架橋,光架橋,精密重合などの手法を駆使し様々な基材フィルムとの強固な異種界面接合を形成することにより,高性能光運動材料の構築を目的としている。
    本年度は,高性能高分子光運動材料の構築において必要不可欠である駆動原理探求を目的として,種々の架橋液晶高分子を合成するとともに,分光法および力学物性評価法を用いて,分子レベルから巨視的レベルまでメカニズムを検討した。架橋液晶高分子におけるアゾベンゼンの影響を結合位置および濃度について詳細に調べたところ,架橋部位にアゾベンゼンを20%程度含む場合に最も高い発生応力を得られることが明らかとなった。光運動挙動は,分子構造,分子の初期配向,異性化挙動,温度,光強度,光照射時間などに大きく依存し,アゾベンゼンの光異性化を分子配向変化へ増幅するプロセスが極めて重要であることがわかった。
    材料形状の変化についても検討を行った。より自由度の高い光運動材料を目指して繊維状の架橋液晶高分子を作製し光照射を行ったところ,照射方向に応じて三次元的な光運動を誘起できた。一方,アゾベンゼン液晶高分子とPVAを交互にスピン塗布した膜を作製したところ,従来と異なる光屈伸挙動を観察できた。
    新たな基材の開発および異種界面接合の形成についても検討を進めた。塩化コバルトを有機アルミニウムで活性化した触媒系を用いて少量のホスフィン共存下ブタジエンの重合を行うことにより,結晶性のシンジオタクチック1,2-連鎖と非晶性のシス1,4-連鎖からなるマルチブロック共重合体の合成に成功した。

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  • Photomechanical Effect of Crosslinked Photochromic Liquid-Crystalline Polymers

    Grant number:19050003  2007 - 2010

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research on Priority Areas  Tokyo Institute of Technology

    SHISHIDO Atsushi, IKEDA Tomiki, KINOSHITA Motoi, MAMIYA Junichi

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    Grant amount: \77600000 ( Direct Cost: \77600000 )

    We developed photomobile materials using crosslinked liquid-crystalline polymers, which could convert light energy to mechanical work directly. It was found that photomobile property was affected by molecular alignment of mesogens and crosslinking density of the polymers. The crosslinked liquid-crystalline polymers laminated to polyethylene films with an adhesion layer showed various three-dimensional movements, such as rotational and translational motions, by photoirradiation. We prepared crosslinked liquid-crystalline polymer fibers with photomobile property. The directional control in photomobility of the polymer fibers may lead to potential applications in artificial muscles and light-driven actuators.

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  • 干渉光重合を利用した液晶高分子の特異的配向プロセス

    Grant number:18655075  2006 - 2008

    日本学術振興会  科学研究費助成事業  萌芽研究  東京工業大学

    池田 富樹, 宍戸 厚, 木下 基, 間宮 純一

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    Grant amount: \3600000 ( Direct Cost: \3600000 )

    最近,液晶モノマーを干渉光により重合することにより,干渉パターンに応じて複雑な分子配向が誘起されることを偶然見いだした。本研究では,この現象を解き明かし,分子配向を複雑かつ高度に制御した液晶高分子フィルムを作製する。近年開発が著しく今後益々の発展が見込まれる,液晶ディスプレイの基幹材料である位相差板・視野角増大フィルムや,DVDなどの光情報記録デバイスに用いられる光ピックアップへの展開の可能性を探る。
    本年度では,前年度に引き続きモノマー構造および重合開始剤の影響を検討し最適な重合条件を探るとともに,得られた高分子フィルムの熱物性および光物性評価を調べ液晶配向膜や位相差板などの光素子への応用について検討した。
    1.モノマー構造および光重合開始剤の影響 光学系の配置を工夫し試料を水平に設置することにより,従来の垂直に設置した条件と比較して分子配向性の高いフィルムの作製を検討した。また,紫外光重合開始剤を用いることにより配向秩序度0.22の異方性ドメインを有するフィルムの作製に成功した。
    2.フィルムの熱物性および光物性評価 DSCおよびTG/DTA測定により,得られたフィルムの液晶性および熱安定性を評価するとともに,偏光顕微鏡を用いて位相差,分子配向性,周期性などについて詳細に調べた。100℃程度まで配向が安定に保持されることが明らかとなった。
    3.液晶配向膜への応用 分子配向フィルムを基板とした,ラビングレス液晶配向膜への応用を検討する。低分子液晶をフィルム上に滴下し,液晶が配向することがわかった。

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  • Invention of Conjugated Electronic Structures and Novel Functions

    Grant number:16GS0209  2004 - 2008

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Creative Scientific Research  Kyoto University

    HIYAMA Tamejiro, CHUJO Yoshiki, HAYASHI Tamio, SHIMIZU Masaki, IKEDA Tomiki, KATO Takashi, YOKOYAMA Masaaki, YAMAGUCHI Yoshihiro

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    Grant amount: \622960000 ( Direct Cost: \479200000 、 Indirect Cost: \143760000 )

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  • Creation of High-Performance Thin Holograms based on Polymer Liquid Crystals with Giant Change in Refractive Index

    Grant number:16105004  2004 - 2008

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (S)  Tokyo Institute of Technology

    IKEDA Tomiki, SHISHIDO Atsushi, KINOSHITA Motoi, MAMIYA Jun-ichi, SHIONO Takeshi, KURIHARA Seiji, KAWATSUKI Nobuhiro

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    Grant amount: \105430000 ( Direct Cost: \81100000 、 Indirect Cost: \24330000 )

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  • 植物細胞個別化と酸化還元状態リアルタイム可視化

    Grant number:18658041  2006 - 2007

    日本学術振興会  科学研究費助成事業  萌芽研究  東京工業大学

    久堀 徹, 池田 富樹, 田中 一朗

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    Grant amount: \3400000 ( Direct Cost: \3400000 )

    (1)光微細加工技術を利用した細胞檻の作製
    顕微鏡の観察用ガラス基板表面に高さ50μm,格子幅20-50μmの檻を光微細加工技術を用いて作製した。特に、細胞のトラップ効率を高めるため、格子形状を柱ではなく衝立型にしたものが、効率よく細胞をトラップできることがわかった。
    (2)植物細胞内の小器官のレドックス状態のリアルタイムの可視化
    酸化還元応答GFPを植物内オルガネラへの移行シグナルを接続し、葉緑体、ミトコンドリア、細胞質に発現できるような形質転換植物の根組織からプロトプラストを調製し、光微細加工で作成した格子付きガラスを用いて顕微鏡観察を行った。還元剤、酸化剤による細胞内の変化を確認後、植物細胞に用いられるエリシターとしてジャスモン酸およびサリチル酸による細胞内の酸化還元状態の変化を確認した。特に、サリチル酸によって特異的に細胞内が酸化されること、その効果が一過的であること、ミトコンドリアに比べ細胞質が素早く酸化されることなどの結果を得た。
    (3)大型植物細胞膜の水輸送能(田中)
    昨年度に引き続き、ユリ緑葉から調製した大型プロトプラストを細胞檻で固定し、外液交換によって細胞サイズの変化を指標として細胞の水輸送能を測定した。

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  • 界面光反応を作動原理とする高速光屈曲液晶高分子フィルム

    Grant number:17029018  2005 - 2006

    日本学術振興会  科学研究費助成事業  特定領域研究  東京工業大学

    池田 富樹, 宍戸 厚, 木下 基, 間宮 純一

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    Grant amount: \4800000 ( Direct Cost: \4800000 )

    近年,光エネルギーを直接力学エネルギーへと変換できるフォトメカニカル効果が注目を集めている。架橋アゾベンゼン液晶高分子フィルムに紫外光を照射すると,フィルムは光源に向かって屈曲し,可視光を照射するとフィルムは元の平坦な状態へと戻る。このフィルムの光屈曲は,紫外光照射によりフィルム表層においてアゾベンゼンのトランス-シス異性化に伴う配向秩序度の低下が誘起され,表面層でのみ収縮が引き起こされる結果生じると考えられている。本研究では,アゾベンゼン液晶高分子フィルムの界面光反応を基盤として,光エネルギーを力学エネルギーに効率良く変換できる光屈曲材料の開発を目的とし,ネマチック相よりも高次の配向を有するスメクチック相,強誘電相,反強誘電相などさまざまな液晶相を発現する新しい液晶モノマーを設計・合成した。液晶モノマーと架橋剤を混合し,光重合することにより作製した架橋アゾベンゼン液晶高分子フィルムは,室温付近にガラス転移点を示し,室温において紫外光を照射すると,フィルムは光源に向かって屈曲し,可視光を照射すると,初期状態に戻った。さらに,室温においても強度280mW/cm^2の紫外光照射によって約500ミリ秒で屈曲を誘起できることが分かった。重合条件を変えることにより,配向状態の異なる架橋アゾベンゼン液晶高分子フィルムを作製し,屈曲挙動と配向状態の関係を調べた結果,高次の配向を有する架橋アゾベンゼン液晶高分子フィルムの方が,屈曲をより高速に誘起できることが分かった。また,フィルムの屈曲する方向は,メソゲンの配向方向に依存していることが明らかとなった。光照射により発生するフィルムの収縮力を評価したところ,収縮力は室温,照射光強度3.5mW/cm^2において200kPaを示し,架橋アゾベンゼン液晶高分子フィルムが人工筋肉・アクチュエーターとして有望であることが示唆された。

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  • 光応答性ポリイミドの界面光反応を利用した液晶配向制御

    Grant number:15033222  2003 - 2004

    日本学術振興会  科学研究費助成事業  特定領域研究  東京工業大学

    池田 富樹, 宍戸 厚, 木下 基

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    Grant amount: \3600000 ( Direct Cost: \3600000 )

    液晶の光配向制御は,液晶ディスプレイに代表されるオプトエレクトロニクスのアプリケーションにおいて非常に重要な次世代技術である。理想的には配向膜の光分解や化学反応が起こらないクリーンな製造プロセスが好ましい。また,製造プロセスの効率化を考えると,照射偏光に対して平行な液晶配向が望ましい。本研究では,照射偏光に液晶が平行配向するポリイミド配向膜の開発を目指して,光応答性ポリイミドの界面光反応を利用した新規液晶配向プロセスを開拓することを目的とした。
    ポリイミド配向膜は,ポリアミド酸に350nmより長波長の偏光を照射しながら熱イミド化させることにより作製した。得られた配向膜は,液晶の一軸配向を容易に誘起できるだけでなく,従来の配向膜よりも熱安定性に優れていることがわかった。また,ポリイミドに偏光を照射する従来の手法で作製した配向膜を用いた場合は,液晶が照射偏光面に対して垂直に配向するのに対して,イミド化プロセスで光照射を行う本手法において作製した配向膜を用いた場合には,液晶が照射偏光面に対して平行に配向することを見いだした。さらに,p偏光を照射することで一回の光照射で液晶のプレチルト角を誘起できることが明らかとなった。
    作製したポリイミド配向膜は偏光照射の光照射量,時間,温度およびアニーリング操作などの作製条件によって,液晶の配向方向が大きく異なることを見いだした。本研究で開発した手法は,従来の配向膜を用いた場合よりも,少ない光照射量で効率よく液晶を配向できることがわかった。イミド化温度が170℃以下では光照射偏光面に対して垂直方向に配向するのに対して,170℃以上では光照射偏光面と平行方向に配向することが明らかとなった。さらに,イミド化を200℃の高温で行うと従来の手法よりも高い配向性を有するポリイミド配向膜が得られた。以上のことよりイミド化条件を変えることにより液晶の配向方向を自在に制御可能であることが示唆された。

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  • 光化学反応に基づく分子長変化により異方的に運動する高分子液晶ゲルの開発

    Grant number:14655355  2002 - 2003

    日本学術振興会  科学研究費助成事業  萌芽研究  東京工業大学

    池田 富樹, 木下 基, 宍戸 厚, 塩野 毅

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    Grant amount: \3400000 ( Direct Cost: \3400000 )

    代表的なフォトクロミック色素であるアゾベンゼンは異性化により分子長を変化できる。このためアゾベンゼンの分子長変化というミクロな効果を利用して,ゲルの変形というマクロな形状変化を誘起できる可能性がある。これまでに申請者らは,高分子アゾベンゼン液晶の光駆動に関する一連の研究を行い,高分子液晶が光に対して鋭敏にかつ高速(応答時間,100ns)に応答することを明らかにした。これらの結果から,高分子アゾベンゼン液晶をゲルの基材として用いると,外場に対して敏感かつ高速に応答し,大きな形状変化を誘起できると考えた。上記の着想に基づいて本研究では高分子アゾベンゼン液晶を用いて光刺激により自律的に運動する高分子ゲルを開発することを目的とした。液晶性を示すアゾベンゼンモノマーを架橋剤とともにセル内で熱および光重合することで,厚さ数十ミクロンのエラストマーフィルムを得た。このフィルムはモノマーの良溶媒中で異方的に膨潤することが明らかとなった。さらに,このフィルムに紫外光照射を行うと,照射方向にフィルムが数十秒で屈曲することがわかった。可視光の照射によってフィルムは本の状態に戻り可逆的な光屈曲を誘起できた。また,ガラス転移温度以上にフィルムを加熱することで,溶媒を用いずエラストマーフィルムの光屈曲を誘起できることが明らかとなった。

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  • 高屈折率変調可能なフォトクロミック液晶を用いるブラッグ型ホログラム記録

    Grant number:14045226  2002 - 2003

    日本学術振興会  科学研究費助成事業  特定領域研究  東京工業大学

    池田 富樹, 木下 基, 宍戸 厚

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    Grant amount: \1900000 ( Direct Cost: \1900000 )

    近未来に出現するマルチメディア高度情報化社会において,ホログラフィーが注目されている。ホログラフィーは光の干渉・回折現象を利用しており,最大の特徴は完全な三次元画像の記録・再生が可能なことである。このため,情報の表示技術としての期待が大きい。また,多重記録が可能などの特性を活かし,高密度情報記録の一つのアプローチとしても注目されている。
    本研究では,高い回折効率でホログラムの書き込みが可能な優れた材料を開発することを目的として,ソフトマテリアルである高分子アゾベンゼン液晶に着目した。これまでに,高分子アゾベンゼン液晶を用いたブラック回折型ホログラムの検討を行い,高分子アゾベンゼン液晶をホメオトロピック配向させることによって,43%と従来の薄膜系ホログラム材料より高い回折効率を示すことを明らかにしている。今年度はさらなる高回折効率化を目指して,新しい高分子アゾベンゼンの設計・合成ならびにホログラムについて検討を行った。合成した高分子アゾベンゼンを用いたフィルムは,200μmの厚さにおいても光を散乱せず,極めて透明であった。フィルムに回折格子を形成させたところ,回折効率は照射時間ともに増大して13分で最大99%に達し,理論限界値にほぼ匹敵する100%の回折効率を示すことが明らかとなった。また,回折格子の書き込み光強度が43mw/cm^2と従来の350mw/cm^2よりもはるかに小さな光強度で書き込み可能なことから,合成した高分子アゾベンゼンが,高回折効率を示すだけでなく高感度で書き込みできる優れたホログラム材料となることを見いだした。

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  • High-performance liquid crystals for next-generation in formation technologies

    Grant number:13305063  2001 - 2003

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (A)  Tokyo Institute of Technology

    IKEDA Tomiki, SHISHIDO Atsushi, KANAZAWA Akihiko, SHIONO Takeshi, KINOSHITA Motoi

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    Grant amount: \49400000 ( Direct Cost: \38000000 、 Indirect Cost: \11400000 )

    Holography, which enables optical storage of three-dimension images, has been of great interest for photonic applications. To obtain clear images, Bragg hologram that theoretically achieves 1O0-% diffraction efficiency is required. In the Bragg hologram, materials should be optically sensitive, meaning that refractive index is efficiently changed by light. Liquid crystals, showing large optical anisotropy and fluidity, can be a good candidate for holographic materials since a large change in refractive index can be easily induced by external fields. There is another important characteristic in the hologram : reversibility of recording. Commercially available materials are sensitive enough, while images cannot be erased, which limits the application to photonic devices. Azobenzene is one of the outstanding photochromic molecules that are capable of changing absorption, molecular shape, and refractive index reversibly upon photoirradiation. Consequently, polymer liquid crystals incorporated with an azobenzene moiety are naturally expected to be reversible holographic materials.
    In this study, two types of hologram, transmission-type and the Lippmann-type, were investigated using polymer azobenzene liquid crystal films. A linearly polarized beam from Ar^+ laser at 488 nm was split to two beams and interfered in the film with a crossing angle of 14゜ in transmission type and 180゜ in the Lippmann-type, respectively. Formation behavior of the transmission-type grating was probcd with a linearly polarized beam from He-Ne laser at 633 nm. The Lippmann-type grating was evaluated with transmission spectrum. In the transmission type, diffraction of the probe beam appeared upon irradiation of writing beams at 488 nm. Diffraction efficiency (η), that is defined as the ratio of diffraction intensity during irradiation to transmission intensity before irradiation, increased to 14% on photoirradiation. On the other hand, in the Lippman-type grating, the value of q for 500-nm light reached 43% when the film was irradiated at 350 mW/cm^2 for 60 min.

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  • Creation of Liquid Crystal Glasses with Controllable Light-Emitting Properties

    Grant number:13640573  2001 - 2002

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (C)  Yamagata University

    KANAZAWA Akihiko, IKEDA Tomiki

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    Grant amount: \3200000 ( Direct Cost: \3200000 )

    Liquid-crystalline behavior and optical property of novel ionic liquid crystals, which are surfactant complexes containing rare-earth ions, were evaluated by differential scanning calorimetry, polarizing optical microscopy, X-ray diffractometry, absorption spectroscopy, and fluorescence spectroscopy. The rare-earth complexes were found to show a smectic A (SA) phase in which a homeotropic structure was formed spontaneously. It is significant that the rare-earth complexes exhibit a stable liquid-crystalline phase and a simple phase transition behavior in comparison with the parent compounds without rare-earth ions. In addition, it was demonstrated that the complexes form an anisotropic glasses consisting of the two-dimensional layers of the hexagonally packed rare-earth ions. Such rare-earth-containing liquid crystals can be expected to act as new light-emitting materials in optoelectronic device applications.

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  • 液晶分子シンクロ効果に基づくブラッグ回折型ホログラム

    Grant number:13022222  2001 - 2002

    日本学術振興会  科学研究費助成事業  特定領域研究  東京工業大学

    池田 富樹, 木下 基, 宍戸 厚, 堤 治

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    Grant amount: \4000000 ( Direct Cost: \4000000 )

    液晶は,液体がもつ流動性と結晶が有する光学的異方性を兼ね備えた高性能・高機能材料である。外場によって分子配列を迅速に自在に制御できるため,分子のシンクロナイゼーション効果を最大限に利用した系であり,誘起される屈折率変化(0.1以上)は多材料を圧倒して大きい。光の変調を考えた場合,屈折率変化は大きくかつ高速であるほど好ましいので,液晶はフォトニクス材料として最適な材料の一つといえる。これまでに,単一分子に高分子物性,液晶性,光応答性を付与した高分子光応答性液晶の分子設計指針を提案し,側鎖にアゾベンゼン部位を有する一連の高分子液晶を開発し,液晶相と等方相を高速(数100ns)に光変換できることを示した。この現象を利用して二光束に分けたレーザービーム(488nm)を高分子アゾベンゼン液晶フィルム上で干渉させ,干渉縞明部のみで光相転移を誘起すると,このフィルムが回折格子として機能することを見いだした。
    本研究では,高分子アゾベンゼン液晶がもつ,高速光応答性・高屈折率変調度・製膜性などの特性を活用し,三次元表示を目指した動的ホログラム材料を開発することを目的として,ホメオトロピック配向の高分子アゾベンゼン液晶を用いた高い回折効率を示すブラッグ回折型ホログラム材料の研究を行った。合成した高分子アゾベンゼン液晶を,ホメオトロピック配向(垂直配向)処理を施した二枚のガラス基板で挟み測定用サンプルを調製した。光照射後のサンプルの透過スペクトル測定を行ったところ,500nm付近において大きな透過率減少がみられ,回折格子が形成されることが明らかとなった。透過スペクトルから求めた回折効率は500nmにおいて43%と,従来の薄膜系ホログラム材料より高い回折効率を得ることが出来た。

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  • 強相関液晶が構築するナノらせん構造体の光制御

    Grant number:13031030  2001    

    日本学術振興会  科学研究費助成事業  特定領域研究(A)  東京工業大学

    池田 富樹, 堤 治

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    Grant amount: \1600000 ( Direct Cost: \1600000 )

    近年,高度情報化社会の成熟とともに,広い波長領域で高速に光信号を変調・分波・分配できるフォトニクス材料の開発が望まれている。液晶が構築するナノらせん構造体は,光と強く相互作用することから,光材料としての高い資質を有する。本研究では,キラル分子中に光応答部位ならびに液晶形成部位を導入し,光によってキラル分子と液晶分子間の相関強度を変えることで,液晶が示すナノらせん構造の変化を誘起し,可視から赤外までの広い領域の光に対する透過・散乱などの光学物性を高速・高効率に制御できる材料の構築を目的とした。キラル部位として炭酸環状エステル,光応答部位としてアゾベンゼンを分子内に有する種々の化合物を合成したところ,有機溶媒に対してゲル化能を有する化合物を見いだした。原子間力顕微鏡で観察した結果,繊維状の三次元ネットワークが形成されていることがわかった。ラセミ体あるいは非液晶化合物ではゲル化能を示さないことから,双極子-双極子相互作用やキラル部位に基づく分子間相互作用がゲル化に大きな影響を及ぼすと考えている。これまでに水素結合やコレステロール部位を利用しない低分子物理ゲル化剤は報告されておらず,極めて珍しい例である。また,このゲルに光照射したところ,強い散乱を示すゲル状態から透明なゾル状態へ変化を起こすことが明らかとなった。光によって光の透過・散乱を制御できることから新しいフォトニクス材料への展開が期待できる。

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  • Control of Liquid Crystal Alignment Based on 3-Dimensional Molecular Manipulation

    Grant number:12555242  2000 - 2001

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)  Tokyo Institute of Technology

    IKEDA Tomiki, TSUTSUMI Osamu, KANAZAWA Akihiko, SHIONO Takeshi, TAKEUCHI Yasumasa, SHISHIDO Atsushi

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    Grant amount: \12900000 ( Direct Cost: \12900000 )

    Uniform alignment of liquid crystals (LCs) is indispensable for their optical and optpelectronic applications, which is conventionally obtained by mechanically rubbing a polyimide (PI) layer. However, dust particles and static surface charges are produced by the rubbing process, which would cause electrical and mechanical damage to thin film transistors. In recent years, the technique for unidirectional alignment of LCs caused by PI films exposed to linearly polarized UV (LPUV) light has been developed. this method allows for easy control of the alignment direction and the fast preparation of an alignment layer, and causes little dust particles and electrostatic damage. In this case, the alignment of LC is perpendicular to the polarization of LPUV light, and exposure should be made two times in order to give precise pretilt of LCs. In this project , we developed a novel method to induce a parallel alignment of LC to polarization of LPUV light by irradiating during the thermal treatment process. Polyamic-acid-coated ITO glass substrate was irradiated with LPUV light at 8.5 mW/cm^2 during the thermal imidization process. The irradiation time was about 30 min and the thermal treatment was processed from 100 to 250 ℃ at a heating rate of 5 ℃/mm. After irradiation, the substrate was then imidized for 10 min at 250 ℃. LC cells with a gap of 5 μm were constructed using two pieces of the above substrates with parallel polarization axes. 4'-Pentyl-4-cyanobiphenyl (5CB) doped with 0.3 wt% dichroic dye M-137 (λmax = 639 nm) was filled into the cells in an isotropic phase at 75 ℃ and cooled down to room temperature. By polarizing microscopy and polarized UV spectra, it was found that the LC molecules were aligned uniaxially and uniformly.

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  • 非局在電子系液晶配向場における光誘起電荷移動を利用した分子配向制御

    Grant number:12020218  2000    

    日本学術振興会  科学研究費助成事業  特定領域研究(A)  東京工業大学

    池田 富樹, 堤 治, 金澤 昭彦

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    Grant amount: \1800000 ( Direct Cost: \1800000 )

    液晶に閾値以上の電界を印加すると,液晶分子の誘電異方性に基づいて配向変化(フレデリクス転移)が誘起される。現在普及している液晶パネルは,この原理に基づいて表示を行っている。近年,電界の代わりに光の光電場を利用した光フレデリクス転移に関する研究が行われており,液晶中に有機色素を微少量ドープすることにより光フレデリクス転移の閾値が大幅に減少することが見いだされた。本研究では,新規π共役チオフェン液晶を開発し,それらの光フレデリクス転移挙動について評価した結果,従来の非液晶性色素と比較してさらに照射光強度の閾値が2桁減少することを明らかにした。さらに,観察された液晶の光配向変化挙動について詳細な検討を行った。測定用サンプルは,垂直配向処理を施した液晶セル中にホスト液晶/チオフェン液晶混合物を封入することによって調製した。光配向変化挙動は,サンプルを二枚の直交した偏光板の間に置き,励起光照射によるプローブ光の透過光量変化を測定することにより評価した。その結果,励起光照射によって液晶分子の配向変化に伴う透過光量変化が観察された。また,z-scan法による測定結果も考え併せると,配向方向は励起光の偏光面と平行であることが明らかとなった。チオフェン液晶は異性化部位をもたないので,観察された配向変化挙動は色素分子と光電場の相互作用(選択励起)に基づく現象であることは明らかである。今後,これまでに得られた知見を分子設計にフィードバックし,光配向メカニズムを明らかにすることによって,液晶光配向の新しい手法を確立できる可能性がある。

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  • 使用環境に応じて屈折率を微調整できる高分子光学材料

    Grant number:11875208  1999    

    日本学術振興会  科学研究費助成事業  萌芽的研究  東京工業大学

    池田 富樹, 金澤 昭彦, 塩野 毅

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    Grant amount: \2100000 ( Direct Cost: \2100000 )

    本来,液晶はそれ自身で秩序構造を発現し,しかも大きな屈折率異方性を示し,かつ流動性があるため配向状態を容易に制御することができる高機能材料である。さらに,液晶の分子配向は電場・磁場・光などの外部刺激で連続的に変化させることができる。そこで,このような液晶の性質を利用して,配向状態が固定化された高分子液晶に外場によって容易に配向を変えることができる低分子液晶を組み込み,低分子液晶の配向を外場で制御することにより材料の光学物性(屈折率)を可逆的に制御する高分子光学材料について検討を行った。本研究では,特に高い秩序構造を示し外場に対する応答性が高い強誘電性液晶に着目した。二光束を干渉させて強誘電性液晶モノマーの光重合を行うと,干渉縞明部にのみ高分子液晶領域が生じ高分子液晶領域と低分子液晶領域が空間的に周期分布した高分子分散型液晶(PDLC)を調製できることを見いだした。また,このPDLCに電界を印加すると低分子液晶領域のみで液晶配向の変化が誘起されて屈折率の周期分布が生じるため,電界印加時にのみ回折格子として機能する新しい高分子光学材料を得ることができた。

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  • 液晶分子ドミノ効果を基盤とする増幅型光情報変換

    Grant number:11167229  1999    

    日本学術振興会  科学研究費助成事業  特定領域研究(A)  東京工業大学

    池田 富樹, 金澤 昭彦

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    Grant amount: \2000000 ( Direct Cost: \2000000 )

    来るべきマルチメディア高度情報化社会において,近年「ホログラフィー」が注目されている。本研究においては,ホログラム記録材料として光応答性を有する高分子液晶に着目した。液晶分子中に光で分子形状を変えるフォトクロミック部位を導入すると,その光反応を引き金にして周囲の液晶分子の配向を変えることが可能である。液晶の示す協同効果を利用すれば,系中にわずかな摂動を加えるだけで配向変化をドミノ倒しのように系全体に伝播させることができると期待され,高感度ホログラム材料を開発できる可能性がある。フォトクロミック部位としてアゾベンゼンを導入した高分子液晶に,光を照射してアゾベンゼンのトランスーシス光異性化を誘起すると,液晶相から等方相への相転移(光相転移)を誘起できる。そこで,液晶相を示す温度である135℃において,二光束に分けたレーザービーム(488nm)をアゾベンゼン液晶フィルム上で干渉させ光異性化を誘起すると,このフィルムが回折格子(グレーティン)として機能することを見いだした。これは,干渉縞明部でのみ光相転移が起こり液晶相と等方相が周期的に分布することに基づいて,フィルムの屈折率が周期的に変調されたためである。このグレーティングは,光照射のオン-オフにより約150ミリ秒で形成・消去することができた。また,動的ホログラムとしては最も高い分解能(700本/mm)を示し,屈折率変調度も実に10^<-2>のオーダーに達することを見いだした。三次元動画の再生ができるダイナミックホログラフィー材料への展開が可能であると考えている。

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  • 光励起状態で駆動する光活性液晶分子システムの構築

    Grant number:11133217  1999    

    日本学術振興会  科学研究費助成事業  特定領域研究(A)  東京工業大学

    池田 富樹, 金澤 昭彦

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    Grant amount: \2200000 ( Direct Cost: \2200000 )

    本研究では,光による液晶の配向制御を実現するために,高分子フォトクロミック液晶の光異性化反応(光化学プロセス),および共役電子系液晶の光励起状態(光物理プロセス)を利用した二つのアプローチを試みた。まず,光化学プロセスを利用する系では,側鎖にアゾベンゼン部位を有する種々の高分子アゾベンゼン液晶を合成し,配向変換効率と分子構造の関係を詳細に調べた。アゾベンゼンの電荷移動吸収帯の調節,共重合比および照射光の波長や光学系を調整・選択することによって,高分子液晶の光配向制御を高い効率で,しかも高速に誘起できることがわかった。また,光誘起配向変化を高い効率で誘起できる高分子アゾベンゼン液晶を用いることによって,書換型光記録が可能であることが明らかとなった。一方,従来の液晶の偏光配向制御は二次元平面上で行われていたが,このような面内配向制御ではなく,面外配向制御(三次元配向制御)が可能となれば,記録密度は増大することが期待できる。そこで,非偏光照射によって,光の入射方向に沿ってアゾベンゼン分子を高い効率で再配置することができる高分子アゾベンゼン液晶を開発し,非偏光の入射角を変えることによって,アゾベンゼン分子の配向を三次元的に自在にマニピュレートできることを見いだした。
    光物理プロセスを利用した液晶光配向制御に関しては,新規π共役チオフェン液晶を開発し,その光配向変化挙動について詳細な検討を行った。その結果,光照射によって誘起される再配向の方向は励起光の偏光面と平行であることが明らかとなった。用いたチオフェン液晶は異性化部位をもたないことから,観察された配向変化挙動は色素分子と光電場の相互作用(選択励起)に基づく現象であることは明らかである。光化学プロセスを用いる従来の方法とは全く異なる液晶光配向の新しい手法を確立できる可能性がある。

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  • Liquid Crystal Alignment Induced by Polyimides Exposed to Linearly Polarized Light

    Grant number:10555301  1998 - 1999

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)  Tokyo Institute of Technology

    IKEDA Tomiki, TAKEUCHI Yasumasa, KANAZAWA Akihiko, SHIONO Takeshi, MATSUKI Yasuo

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    Grant amount: \12000000 ( Direct Cost: \12000000 )

    Through this study on photoalignment (non-robbing alignment) technique for liquid crystal (LC) devices, we have revealed that aromatic polyimides (Pis) exposed to linearly polarized UV light (366 nm) show a high alignment efficiency without significant change in the chemical structure of PIs. We extended the PI films as an alignment layer to dynamic control technique of nematic LCs (NICs). The most significant characteristic of this system is to utilize photoinduced Freedericksz transition as a trigger to control alignment of NICs. We realized the optical switching of with the photosensitive PIs containing benzophenone moiety as an alignment film. It became clear that the threshold voltage of Freedericksz transition, at which change in the LC alignment occurs, is quite different between irradiated and unitradiated conditions. It was found that photoirradiation at 366 nm resulted in the immediate change in the transmittance when bias voltage of 4.5 V was applied across the cell. Although the mechanism is not well understood at the present stage, formation of intra- or intermolecular charge transfer complexes in the surface area of PI films by photoirradiation ( i.e., change in the polarity) seems to participate in the phenomenon. In conclusion, we have shown for the first time that the photosensitive PI films enable optical control of Freedericksz transition of NLCs. This phenomenon is useful for development of polarization-controllable materials in which permanent electric polarization is controlled by change in dipolar alignment based on Freedericksz transition.

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  • Holographic Image Storage and Display Based on Photoinduced Change in Refractive Index of Polymer Liquid Crystals with photochromic Moieties

    Grant number:10450362  1998 - 1999

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)  Tokyo Institute of Technology

    IKEDA Tomiki, KANAZAWA Akihiko, SHIONO Takeshi

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    Grant amount: \11700000 ( Direct Cost: \11700000 )

    Photochemical phase transition of liquid crystals (LCs) can be induced by a photochemical reaction of photochromic molecules. For example, when an azobenzene structure is introduced to LC molecules as the photosensitive moiety, the photochemical LC-to-isotropic phase transition takes place isothermally by the transcis photoisomerization of the azobenzene. We have developed holographic materials by means of polymer azobenzene LCs. On irradiation of a couple of coherent light beams, the real-time hologram was created by periodic induction of photochemical phase transition in polymer azobenzene LCs. Observation of the grating structure with a polarizing microscope confirmed that the isotropic phase was arranged with a spatial resolution of < 1μm which corresponds to a storage capability of > 400 Mbits/cmィイD22ィエD2. Under the optimal experimental condition, 28% of diffraction efficiency and 60 ms of writing time were achieved. When 2-dimensional or 3-dimensional images were stored in the polymer azobenzene LC films, clear reconstructed images were observed with high contrast and high resolution. We thus can expect that a high-density 3-dimensional image storage is possible with the polymer azobenzene LCs.

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  • 共役電子系液晶配向場における光誘起電子分極を利用した液晶の高速光制御

    Grant number:10146215  1998    

    日本学術振興会  科学研究費助成事業  特定領域研究(A)  東京工業大学

    池田 富樹, 金澤 昭彦

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    Grant amount: \1800000 ( Direct Cost: \1800000 )

    高い効率で光変調可能な新しいフォトニクス材料を構築することを目指し,二つの液晶配向制御方法について検討を行った。一つは,光化学プロセスを利用した液晶光配向制御である。側鎖にアゾベンゼン部位を導入した種々の光応答性高分子液晶を合成し,それらの光配向能を評価した。ポリドメイン構造を示す高分子液晶薄膜に366nmの直線偏光を照射することによって,一軸配向性のモノドメイン構造が誘起されることがわかった。また,照射光エネルギーが0.7mW/cm^2以上の場合,誘起される配向度は系に吸収されるエネルギーの増加とともに増加するが,0.3mW/cm^2では配向変化がほとんど誘起されないことがわかった。アゾベンゼンの光化学反応には,照射光強度のしきい値が存在しないことを考えると,観察された特異的な挙動は自己配向場において協同効果を示す液晶物質に特有の現象と考えることができる。もう一つは,光物理プロセスを利用した液晶光配向制御である。本研究では光励起分子の生成という分子レベルでの電子状態変化を,液晶配向変化という巨視的な現象へと増幅することができる新しい分子システムを構築することを目的とした。測定用サンプルは,合成した新規π共役色素であるチオフェン誘導体をネマチック液晶中にドープすることによって調製した。液晶の配向変化効率は,集光したアルゴンイオンレーザーの488nmのガウシアシビームをサンプルに入射し,光誘起配向変化(光誘起屈折率変化)に基づく自己位相変調効果によって生じる干渉縞の数を指標として評価した。非ドープ系では,干渉パターンが見られず配向変化が誘起されないことがわかった。一方,色素を0.05wt%含むドープ系では自己位相変調効果に基づく干渉パターンが明瞭に観察され,非ドープ系と比較して約2桁高い光配向変化効率を示すことが明らかとなった。

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  • 液晶モノマーの光重合による立体規則性ポリマーの調製

    Grant number:09875235  1997    

    日本学術振興会  科学研究費助成事業  萌芽的研究  東京工業大学

    池田 富樹, 金澤 昭彦, 塩野 毅

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    Grant amount: \2000000 ( Direct Cost: \2000000 )

    強誘電性液晶(FLC)は対称中心のない液晶相(強誘電相)を示し,液晶分子は頭-頭で配列する。高い秩序構造を示すFLCに重合基を導入すれば,重合基は規則的にしかも非常に接近した状態で存在し特異的な重合挙動を示すことが期待できる。そこで,FLCモノマーを分子配向下において光重合し,立体規則性制御および光重合挙動について検討した。セルギャップが2μmの液晶セル中にFLCモノマーを封入し,様々な相構造を示す温度で高圧水銀ランプの366nmの光を照射することによって光重合した。初期重合速度は分子配列に大きく影響され,カイラルスメクチックC(SmC^*)相の温度領域で最大となることが明らかとなった。次に,液晶セルに外部電界を印加し,FLCモノマーに表面安定化状態(双極子が同一方向へ揃った状態)をとらせた状態で同様の光重合を行った。電界印加下における重合性は無印加状態のときより低下し,重合初期過程ではFLCモノマーの重合性は分子配向性と分子運動性の二つの因子に依存することがわかった。対照的に,重合後期過程おける重合性は温度とともに増加し,分子運動性が支配的要因となることが明らかとなった。これは,重合後期過程では重合初期の分子配列は保たれず,生成ポリマーの蓄積によって相構造変化が誘起されることに起因する。
    また,光重合によって得られたFLCポリマーの配向性を偏光顕微鏡を用いて評価した。特に表面安定化状態で光重合した場合,FLCポリマーは光照射前と同様なSmC^*相を示すことがわかった。このようなSmC^*相の固定化は,FLCポリマーの光学素子への応用の観点から興味深い。立体規則性の制御に関しては,表面安定化状態での重合によっても達成することができなかった。本研究成果を踏まえてFLCモノマーの分子設計を再考する必要がある。

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  • 光応答性ポリマー電極による液晶の光配向制御

    Grant number:09237226  1997    

    日本学術振興会  科学研究費助成事業  重点領域研究  東京工業大学

    池田 富樹, 金澤 昭彦

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    Grant amount: \1900000 ( Direct Cost: \1900000 )

    光応答性液晶配向膜で表面処理したポリマー電極による液晶の光配向変化について検討した。光応答性配向膜にはベンゾフェノン構造を有するポリイミドを,液晶には強誘電性液晶(FLC)とネマチック液晶(NLC)を用いた。まず,光応答性配向膜によるFLCの配向変化挙動を調べた。セルギャップが2μmの液晶セルに分極反転が起こらない閾値以下のバイアス電界を印加し表面安定化状態(双極子が同一方向へ揃った状態)をとらせた後,高圧水銀ランプの366mの光を照射した。その結果,FLCの光分極反転に基づく配向変化が観察された。また,光応答性配向膜によるFLC応答時間を,レーザーパルス光照射(355nm,10ns)によるプローブ光(633nm)の透過光量の時間分解測定を行うことによって評価した結果,液晶配向変化は約200μsで完了することが明らかとなった。
    さらに,実用性の高いNLCを用いても液晶光配向制御が可能であることを見いだした。セルギャップが5μmの液晶セル中にNLCを封入することによって測定用のサンプルを調製した。直交した二枚の偏光板の間に液晶セルを置き,光照射によるプローブ光の透過光量変化を測定することにより液晶の配向変化挙動を評価した。まず,透過光量(T)と印加電圧(V)の関係を,光照射下と未照射下において調べた。得られたT-V曲線から,配向変化が誘起される閾電圧は光照射下と未照射下とでは著しく異なり,光照射下では閾電圧が低下した。次に,未照射下においてホモジニアス配向が保持されている4.5Vにバイアス電圧を設定し,光照射による透過光量変化を調べた。光照射すると直ちに透過光量は減少し,ホモジニアス配向からホメオトロピック配向へと変化することが明らかとなった。

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  • 光運動材料

    1997 -  

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  • Photomobile Polymers

    1997 -  

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  • 液晶フォトニクス材料-新しい原理に基づく光記録

    Grant number:07651075  1995    

    日本学術振興会  科学研究費助成事業  一般研究(C)  東京工業大学

    池田 富樹

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    Grant amount: \2500000 ( Direct Cost: \2500000 )

    液晶は結晶同様光学的異方性をもち,かつ液体のように流動性をもつためディスプレイ材料として広く使われている。現在の主流はネマチック液晶の電界駆動であるが,数ミリ秒の応答が限界であるため記録・スイッチング・演算など多方面への応用が制限されている。本研究ではフォトクロミック化合物の光化学反応がピコ秒〜ナノ秒という高速で起こることに着目し,フォトクロミック部位を組み込んだネマチック液晶を合成して,新しい原理に基づく光記録について検討した。アゾベンゼン誘導体のなかにはネマチック液晶相を発現するものがあることを見出した。これらアゾベンゼン液晶では,アゾベンゼン部位は液晶形成団(メソゲン)としての役割と,光応答部位としての役割の二つを担っている。アゾベンゼンには二つの異方体があり,棒状のトランス体ではある温度範囲でネマチック液晶相を発現するが,光照射後に生成する屈曲形のシス体ではどんな温度においても液晶相は発現しないことが明らかになった。すなわち,アゾベンゼン液晶に光を照射してトランス-シス光異性化を起こすと,シス体が生成すると同時にネマチック液晶は消滅することがわかった。水銀灯の366nmの輝線をアゾベンゼン液晶薄膜(厚さ100nm)に照射すると,トランス-シス光異性体に伴ないネマチック相一等方相の相転移が誘起され,光照射を止めると,熱的にシス-トランス逆異性化が起こりネマチック相が復活することを見出した。このネマチック相一等方相光相転移は1000回も繰り返し起こすことができた。光応答性をレーザーパルス(355nm,10ナノ秒半値幅)を照射して検討した結果,低分子アゾベンゼン液晶・高分子アゾベンゼン液晶いずれの試料においても,200マイクロ秒という従来のネマチック液晶応答と比較して10倍以上高速応答することを見出した。光記録について検討した結果,高分子アゾベンゼン液晶のガラス転移温度以上で画像を定着すると半年以上全く変わらずに定着画像が保存でき,ガラス転移温度以上に昇温すると画像が消去できることがわかった。

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  • 新しい駆動原理による強誘電性液晶空間光変調素子

    Grant number:07246217  1995    

    日本学術振興会  科学研究費助成事業  重点領域研究  東京工業大学

    池田 富樹

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    Grant amount: \3000000 ( Direct Cost: \3000000 )

    申請者らは,トランス-シス光異性化を示すアゾベンゼン誘導体を3モル%程度混合した強誘電性液晶に表面安定化状態をとらせ,しきい値以下の逆電界を印加して光照射を行うと,分極反転のしきい値が小さくなって露光部で分極反転が誘起されることを見い出した(Nature,361,428,1993)。このゲスト/ホスト系の光駆動により,光記録・光スイッチングが可能であるが,強誘電性液晶の表面安定化状態は配向膜(ポリイミド)による強制的な配向状態と考えられるので,配向膜の性質を光で変えることができればより高い効率で分極反転を誘起できるという着想に到った。本研究では,光応答部位に組み込んだポリイミド配向膜を調製し,それを用いて液晶セルを作製して配向能を調べるとともに、上述の新しい原理による強誘電性液晶の光駆動が可能か否かを検討した。ベンゾフェノンを組み込んだポリイミドを多数合成し,電極付きのガラス基板上に成膜し,これらのガラス基板でセルを作製して強誘電性液晶を封入して配向状態を調べた結果,ベンゾフェノンとビフェニル基を有するポリイミドとベンゾフェノンとシクロペンタン構造を有するポリイミドが比較的良好な配向を与えることがわかった。これらの液晶セルにバイアス電圧を印加し光照射を行ったところ,ベンゾフェノンとビフェニル基を有するポリイミドでは強誘電性液晶の分極反転が誘起され,このポリイミドが光応答性を示すことを見出した。更に,レーザーパルスを照射して応答時間を測定した結果,広い温度範囲にわたって200マイクロ秒という高速応答をすることがわかり,上記の原理で強誘電性液晶の光スイッチングが可能なことを実証した。

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  • 光で駆動する液晶

    Grant number:7700000243  1992 - 1995

    科学技術振興機構  戦略的な研究開発の推進/戦略的創造研究推進事業/さきがけ 

    池田 富樹

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    強誘電体液晶にフォトクロミック化合物を組み込んだ系や、光応答基を分子内に有する強誘電体液晶を合成して、その光応答性を検討し、光分極反転など光応答を作動原理とする表示・記録素子への応用の可能性を探索します。

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  • Liquid Crystal Polymer Systems For Rewritable Optical Recording

    Grant number:04555214  1992 - 1994

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Developmental Scientific Research (B)  Tokyo Institute of Technology, Research Laboratory of Resources Utilization

    ICHIMURA Kunihito, OHE Yasushi, YAMAMURA Shigeo, TAMAKI Takashi, IKEDA Tomiki

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    Grant amount: \20300000 ( Direct Cost: \20300000 )

    Two types of photosensitive liquid crystalline systems were studied to apply to reversible opticak memory.
    1.Photoinduced phase change of liquid crystal polymers
    (1) Photoinduced phase change of nematic liquid crystalline polymers into isotropic phase under UV-irradiation for the photoisomerization of doped azobenzenes was considerably enhanced by attaching non-mesogenic residues in the side chains as a result of the reduction of an order parameter of the mesophase. The recovery of the nematic phase was caused by illumination with blue light although an aging period was required.
    2.Liquid crystal alignment photoregulation mediated by polymer surfaces
    (1) An azimuthal alignment of nematic liquid crystal layrs was controlled by irradiation of a cell fabricated with substrate plates covered with photochromic molecular layrs with linearly polarized light. Rewriting of an optical memory based on this working principle was realized simply by changing an electric vector of actinic light.
    (2) Three types of photoaligning polymer thin films were developed. The first involves the surface-selective introduction of azo-chromophores on a poly (vinyl alcohol) thin film. The second method is based on spin-coating of a thin film of polymers substituted with azobenzenes in their side chains. The third one consists of the deposition of Langmuir-Blodgett films of a polyimide bearing azobenzene units on a substrate plate.
    (3) Factors affecting optical quality of photoimages and exposure energy required for liquid crystal reorientation were investigated. Photoimages resolving few mum lines and spaces were quite stable at a temperature below a nematic/isotropic transition temperature (T_<N1>) and erased by heating above T_<N1> or simply by overwriting with polarized actinic light with a different polarization plane.
    (4) The surface-mediated optical recording is highly of practical significances because they can be operated by irradiation with a single light source emitting visible light which results in no observable photodegradation of azobenzenes.

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  • 液晶高分子を用いた二次元・三次元光記録

    1993 -  

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  • Real-Time Holography by Polymer Liquid Crystals

    1993 -  

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  • 高分子液晶をマトリックスに用いたフォトンモ-ド光記録材料

    Grant number:03650742  1991    

    日本学術振興会  科学研究費助成事業  一般研究(C)  東京工業大学

    池田 富樹

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    1.光応答分子を組み込んだ高分子液晶の調製。 側鎖にフェニルベンゾエ-ト(PAPBn)やシアノビフェニル(PACBn)を有する高分子液晶を調製し、そのガラス転移温度(Tg)および相転移温度をそれぞれDSC、偏光顕微鏡観察によって決定した。PAPBn、PACBnのホモボリマ-についてはBMABなどのアゾベンゼン誘導体を数モル%ド-ブした。
    2.高分子液晶の光相転移挙動。 キセノンランプやYAGレ-ザ-を光源として用いて、高分子液晶フィルムにフォトマスクを被せ、画像定着を行った。画像は露光部の等方相(すなわちクロスニコル下で暗視野)、非露光部の液晶相(ネマチック相;クロスニコル下で明視野)のコントラストで記録することが明らかになった。更に、レ-ザ-で画像定着後、試料の温度をTg以下に保つことにより記録は長期間(約半年以上)も安定に保存できることが明かとなり、低分子液晶では数十分で記録が消滅しのに比較して、高分子液晶の場合は記録保存安定性が極めて高いことがわかった。もちろん、記録の書き込み・消去は完全に可逆であり、何回でも書き込み・消去ができた。解像度として2μmという値が得られ、より高解像度化は干渉などを無くすことによって可能であろう。
    3.高分子液晶の光相転移挙動の時間分解測定。高分子液晶はメリゲンの運動性が主鎖の制約を受けるため、応答性が低下することが予想された。調製した高分子液晶の真の応答性を評価する目的で、YAGレ-ザ-パルスを用いて極短時間(10ns)で光応答分子の異性化を終了させ、系の熱力学的状態を非平衡のN状態とし、平衡状態のI状態への緩和過程を複屈折率の時間分解測定を行うことにより実時間で追跡した。その結果、PAPB3/BMAB系では200msで相転移が完了することが明らかになった。この200msという値は、低分子液晶系の100msとあまり変わらず、電場応答では高分子液晶が圧倒的に不利となるのと異なり、光応答においては高分子液晶は低分子液晶と比較してほぼ同じような応答を示すことがわかった。更に興味深いのは、コポリマ-の応答性である。PAPB系コポリマ-では50msという低分子液晶と比較しても速い応答が得られ、高い記録安定性を加味すると、高分子液晶はフォトンモ-ドの光記録材料として非常に優れていることが明らかになった。

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  • 高分子液晶を利用した光記録材料

    Grant number:63550680  1988    

    日本学術振興会  科学研究費助成事業  一般研究(C)  東京工業大学

    池田 富樹

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    Grant amount: \1900000 ( Direct Cost: \1900000 )

    「光記録材料」が他の記録材料と比較して情報処理速度・容量の点で潜在的により優れているのは周知の事実である。繰り返し耐性向上のため非破壊読み出しの手法を採用すべきは当然として、高感度化・高SIN比を達成するためには内部増幅機能をもつデバイスを開発する必要がある。側鎖にフェニルベンゾエート(PB)を有するポリアクリレート(PAPB)は液晶性を発現する。光異性化するアゾベンゼン誘導体(AZO)をPAPBに分散するか、AZOをコモノマーとするコポリマーはAZOの光異性化により等温的にネマチックマ(N)【tautomer】アイソトロピック(I)の相転移を起こすことが明らかになった。この光誘起相転移では、分子量、主鎖-メソゲン間スペーサー長、温度が支配因子であり、分子量1万以上、スペーサー長3以外では相転移は誘起されず、かつ低温でも相変化は起こらなかった。ホモポリマー系よりコポリマー系の方が相転移速度は大きく、特にPBとAZOのスペーサー長が3の場合、最も速かった。高分子液晶の熱的測定およびFT-LRの2色性比から求めたオーダーパラメータからスペーサー長3の高分子液晶が最も配向性が低いことが明らかになり、初期状態で配向性の悪い高分子液晶系で光誘起相転移は起こり易いことがわかった。N→I転移後、高分子液晶をTg以下にクェンチするとI相は半永久的に保持され、これは高分子のセグメント運動を凍結した結果であり、高分子液晶を用いた光記録材料では画像安定性が極めて高いことが判明した。さらに高分子液晶では低分子液晶と異なりセルが不必要でフィルムに成型できるため、薄膜における光記録が達成できる。実際にフォトマスクを用いたレーザー光書き込みの実験を行なったところ解像度は2〜4μであり、照射条件等を選択することによりさらに向上すると予想される。情報読み出しは複屈折異方性を用いるので完全に比破壊型であり、書き込み/焼却も完全に可逆である。

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  • 液晶モノマーの重合挙動

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  • フォトクロミック液晶を用いた光波制御

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  • Photopolymerization of Liquid-Crystalline Monomers

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  • Photochemical Manipulation of Light by Means of Photochromic Liquid Crystals

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Intellectual property rights

  • 液晶組成物および液晶調光素子

    宇部 遼,木村 正臣,田中 芳清

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    Application no:特願2022-073332  Date applied:2022.4.27

    Announcement no:特開2023-162737  Date announced:2023.11.9

  • 重合性液晶組成物及び液晶表示素子

    張 琴姫,藤沢 宣,長谷部 浩史,長谷川 芳樹

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    Application no:特願2019-551114  Date applied:2018.10.22

    Announcement no:WO2019/082839  Date announced:2019.5.2

Committee Memberships

  • 2006    

    日本化学会   筆頭副会長、副会長、関東支部長 、関東支部副支部長 、関東支部常任理事  

  • 2006    

    Chemical Society of Japan   Head Vice-President、Vice President、President of the Kanto Branch 、Vice President of the Kanto Branch 、Executive member of the Kanto Branch  

  • 2003    

    日本液晶学会   副会長 、理事(国際交流担当) 、理事(行事担当)  

  • 2003    

    Japanese Liquid Crystal Society   Vice President 、Executive member 、Executive member  

  • 1998 - 2000

    高分子学会   関東支部理事  

  • 1998 - 2000

    The Society of Polymer Science, Japan   Executive member of the Kanto Branch  

  • 1998 - 1999

    光化学協会   理事  

  • 1998 - 1999

    Japanese Photochemistry Association   Executive member  

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