Updated on 2026/03/10

写真a

 
Masaaki Fujii
 
Organization
Research and Development Initiative Institute Professor
Contact information
The inquiry by e-mail is 《here
External link

Degree

  • 理学博士 ( 東北大学 )

Education

  • 1985.3
     

    Tohoku University   doctor course   others

Research History

  • 2024.4 - Now

    Chuo University   Research and Development Initiative   Professor

  • 2023.4 - 2024.3

    Tokyo Institute of Technology   Director in General

  • 2022.4 - 2024.3

    東京工業大学 科学技術創成研究院 副研究院長(国際)併任

  • 2016.4 - 2024.3

    Tokyo Institute of Technology   Professor

  • 2003.4 - 2016.3

    東京工業大学 資源化学研究所 教授

  • 1999.4 - 2003.3

    岡崎国立共同研究機構 分子科学研究所分子制御レーザー開発研究センター センター長(兼任)

  • 1997.4 - 2003.3

    :岡崎国立共同研究機構 分子科学研究所 教授

  • 1999 - 2003

    :Okazaki National Research Institutes Institutes for Molecular Science, Laser Reserch Center for Molecular Science Director

  • 1997 - 2003

    :Okazaki National Research Institutes Institutes for Molecular Science Professor

  • 2003 -  

    -:Tokyo Institute of Technology Chemical Resources Laboratory Professor

  • 1993.4 - 1997.3

    早稲田大学 理工学部 助教授

  • 1993 - 1997

    :Waseda University School of Science and Engineering, Department of Chemistry Associate Professor

  • 1993 - 1996

    :Japan Science and Technology Coorporation PREST researcher

  • 1993 - 1996

    :科学技術振興事業団 さきがけ研究21「光と物質」領域 研究員(兼任)

  • 1985.4 - 1993.3

    東北大学 理学部文部教官 助手

  • 1985 - 1993

    :Tohoku University Faculty of Science, Department of Chemistry Research Associate

  • 1988.7 - 1988.11

    米国コーネル大学化学科 日米科学技術創成研究院交流事業派遣研究員

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Research Interests

  • Molecular Spectroscopy

  • Photochemistry

  • 光化学

  • 分子分光学

Research Areas

  • Nanotechnology/Materials / Fundamental physical chemistry

Papers

  • Infrared and Ultraviolet Spectra of the Monohydrated N -Methyl-Dopamine–Methylation Effect on Structure and Excited State Dynamics

    Keisuke Hirata, Ken-ichi Kasai, Masaaki Fujii, Gilles Grégoire, Shun-ichi Ishiuchi

    The Journal of Physical Chemistry A   2025.12

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

    DOI: 10.1021/acs.jpca.5c06307

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  • Probing the Triplet State by Cryogenic Ion Trap IR Spectroscopy─Application to Protonated Lumiflavin

    Sotaro Ohara, Keisuke Hirata, Gilles Grégoire, Masaaki Fujii, Otto Dopfer, Shun-ichi Ishiuchi

    The Journal of Physical Chemistry Letters   12514 - 12519   2025.11

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

    DOI: 10.1021/acs.jpclett.5c02372

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  • The Deprotonation Sites of Gas Phase Uridine and Pseudouridine: Implications for mRNA Vaccines

    Yuika Okura, Garrett D. Santis, Xiao-Fei Gao, Wenjin Cao, Keisuke Hirata, Shun-ichi Ishiuchi, Masaaki Fujii, Xue-Bin Wang, Sotiris S. Xantheas

    The Journal of Physical Chemistry Letters   10945 - 10951   2025.10

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

    DOI: 10.1021/acs.jpclett.5c02616

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  • The Path from Sequestration to Hydration: Why Na+ Takes a Unique Route with the Ionophore, Beauvericin

    Kien X. Vo, Keisuke Hirata, James M. Lisy, Masaaki Fujii, Shun-ichi Ishiuchi

    The Journal of Physical Chemistry A   129 ( 35 )   8101 - 8109   2025.8

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

    DOI: 10.1021/acs.jpca.5c03824

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  • Is Tl+ an Analogue of K+? IR Spectroscopy of Tl+ and a Key Peptide of the Selectivity Filter in K+ Channels

    Satoru Tanabe, Keisuke Hirata, Koichi Tsukiyama, James M. Lisy, Masaaki Fujii, Shun-ichi Ishiuchi

    The Journal of Physical Chemistry Letters   16 ( 33 )   8621 - 8626   2025.8

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

    DOI: 10.1021/acs.jpclett.5c01660

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  • Optical and Infrared Spectroscopy of Lumiflavin Protomers in a Cryogenic Ion Trap

    Sotaro Ohara, Keisuke Hirata, Gilles Grégoire, Masaaki Fujii, Otto Dopfer, Shun-ichi Ishiuchi

    The Journal of Physical Chemistry A   129 ( 24 )   5245 - 5250   2025.6

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

    DOI: 10.1021/acs.jpca.5c01350

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  • The Nicotine–Tryptophan Dimer: Probing the Principal Interaction of Nicotine with the Nicotinic Acetylcholine Receptor (nAChR), the Binding Pocket in the Human Brain

    Yuika Okura, Madisen N. Hallsten, Garrett D. Santis, Keisuke Hirata, Masaaki Fujii, Shun-Ichi Ishiuchi, Sotiris S. Xantheas

    Journal of the American Chemical Society   147 ( 17 )   14043 - 14047   2025.4

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

    DOI: 10.1021/jacs.5c00880

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  • i-Motif DNA in isolated hemiprotonated cytosine dimers, studied using IR spectroscopy and theoretical calculations

    Ana D. Parejo Vidal, Yuika Okura, Keisuke Hirata, Vijay Madhav Miriyala, Pavel Hobza, Shun-ichi Ishiuchi, Masaaki Fujii, Mattanjah S. de Vries

    Physical Chemistry Chemical Physics   27 ( 19 )   9980 - 9990   2025

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

    This study provides a comprehensive investigation of the structural properties of cytosine monomers and dimers, highlighting how tautomer stability shifts under varying conditions.

    DOI: 10.1039/d5cp00657k

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  • Unbuckling the 18-Crown-6 Ether Belt Around Metal Ions: Forging the Connection to the Condensed Phase

    Ryu Sakuma, Keisuke Hirata, James M. Lisy, Masaaki Fujii, Shun-ichi Ishiuchi

    Journal of the American Chemical Society   2024.11

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

    DOI: 10.1021/jacs.4c12036

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  • Enantioselective complexation of protonated tyrosine by a chiral crown‐ether: the nature of the Hydrogen bonds makes the difference.

    Anne Zehnacker, Kien Xuan Vo, Keisuke Hirata, Bruno Martínez-Haya, Jos Oomens, Shun-ichi Ishiuchi, Masaaki Fujii

    ChemPhysChem   2024.11

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

    The complexes formed between (18‐crown‐6)‐tetracarboxylic acid, denoted as 18C6TA, and the two enantiomers of protonated tyrosine, L‐ and D‐Tyr, are studied in a cryogenic ion trap by combining mass spectrometry, laser spectroscopy, and DFT calculations. Both UV and IR photodissociation spectra indicate the formation of multiple isomers for each complex, some of them interconverting upon IR irradiation. Conformer‐selective vibrational spectroscopy reveals that all structures involve an internally hydrogen‐bonded folded structure of the crown ether. The complexes formed with L‐Tyr involve two NH…O interactions with the ether oxygen atoms,and two hydrogen bonds to the crown ether carboxylic function, one from the NH group and the other from the COOH group of tyrosine. The   D‐Tyr complexesshow more conformational mobility: two out of the three lowest energy conformers observed are tripodal, with three NH…O interactions between the amino acid ammonium and the crown ether oxygens. An additional conformer shows only one NH…O interaction, but has two interactions involving one of the cavity COOH moieties, one with the NH and one with the phenol OH. The increased calculated stability of the complex made from (‐) 18C6TA and L‐Tyr parallels its higher abundance in the mass spectrum of an isotopically labelled racemic mixture.

    DOI: 10.1002/cphc.202400880

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  • Releasing Preferentially Sequestered Na+ from Its Confinement by Beauvericin: A Single Water Molecule is the Accomplice

    Kien X. Vo, Keisuke Hirata, James M. Lisy, Masaaki Fujii, Shun-ichi Ishiuchi

    The Journal of Physical Chemistry A   2024.10

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

    DOI: 10.1021/acs.jpca.4c04515

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  • Water-Induced Dissociative Mechanism of Carboxylate and Divalent Calcium Ions Revealed by IR Laser Spectroscopy

    Jean-Xavier Bardaud, Yurika Hayakawa, Hikaru Takayanagi, Keisuke Hirata, Shun-ichi Ishiuchi, Masaaki Fujii, Eric Gloaguen

    The Journal of Physical Chemistry Letters   9295 - 9300   2024.9

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

    DOI: 10.1021/acs.jpclett.4c01803

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  • Micro Solvation Effect of Methanol on Excited-State Dynamics of Protonated Tryptophan and Dopamine

    Hideo Toma, Jun-ichi Tabata, Keisuke Hirata, Gilles Gregoire, Masaaki Fujii, Shun-ichi Ishiuchi

    The Journal of Physical Chemistry A   2024.7

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

    DOI: 10.1021/acs.jpca.4c03178

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  • The Gas Phase Protonation Sites of Six Naturally Occurring Nicotinoids

    Yuika Okura, Garrett D. Santis, Keisuke Hirata, Sotiris S. Xantheas, Masaaki Fujii, Shun-Ichi Ishiuchi

    The Journal of Physical Chemistry Letters   6966 - 6973   2024.6

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

    DOI: 10.1021/acs.jpclett.4c01206

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  • Affinity of Nicotinoids to a Model Nicotinic Acetylcholine Receptor (nAChR) Binding Pocket in the Human Brain

    Garrett D. Santis, Yuika Okura, Keisuke Hirata, Shun-Ichi Ishiuchi, Masaaki Fujii, Sotiris S. Xantheas

    The Journal of Physical Chemistry B   2024.5

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

    DOI: 10.1021/acs.jpcb.3c07919

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  • Switching of Protonation Sites in Hydrated Nicotine via a Grotthuss Mechanism

    Yuika Okura, Garrett D. Santis, Keisuke Hirata, Vasilios S. Melissas, Shun-ichi Ishiuchi, Masaaki Fujii, Sotiris S. Xantheas

    Journal of the American Chemical Society   2024.1

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

    DOI: 10.1021/jacs.3c08922

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  • Conformational preference of 2-(4-methoxyphenyl)ethanol studied by supersonic jet spectroscopy: Intramolecular OH/π interaction

    Hironari Nagasawa, Sakuya Ogawa, Wataru Kashihara, Tasuku Isozaki, Keisuke Hirata, Shun-ichi Ishiuchi, Masaaki Fujii, Tadashi Suzuki

    The Journal of Chemical Physics   160 ( 2 )   2024.1

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

    A π-type hydrogen bonding between the OH group and the π electron is a crucial factor for the conformational preference of the molecular structure with a flexible group. However, the information on the effect of the substituent on the OH/π interaction is insufficient. The laser-induced fluorescence (LIF) excitation, the dispersed fluorescence (DF), the IR–UV hole-burning, and the IR dip spectra of jet-cooled 2-(4-methoxyphenyl)ethanol were measured for the first time. Almost all bands observed in the spectral region of 35 550–36 500 cm−1 in the LIF excitation spectrum were successfully assigned with the DF and the IR–UV hole-burning spectra coupled with the quantum chemical calculation at M06-2x/6-311G and MP2/6-311G levels. Five conformers were found in the LIF excitation spectrum. The most stable conformer was Ggπ, and the second most stable conformer was Ggπ′ (the trans rotamer of the methoxy group for Ggπ). Ggπ and Ggπ′ had the OH group directed toward the π electron system of the benzene ring. The OH stretching frequency of Ggπ/Ggπ′ of MPE in the IR dip spectra was red-shifted against that of Ggπ of phenylethanol, indicating that the introduction of the methoxy group would enhance the intramolecular OH/π interaction. In addition, the torsional vibration between the benzene ring and the side chain (−CH2CH2OH) (mode 63) was observed in the DF spectra of the Ggπ–00 and Ggπ′–00 band excitation, but their intensities were rather different, resulting from the different orientation of the OH group for each conformer toward the π electron system. The methoxy group would increase the negative charge on the benzene ring and would enhance the intramolecular OH/π interaction through the electrostatic interaction.

    DOI: 10.1063/5.0184664

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  • Transition from vehicle to Grotthuss proton transfer in a nanosized flask: Cryogenic ion spectroscopy of protonated p-aminobenzoic acid solvated with D2O

    Keisuke Hirata, Kyota Akasaka, Otto Dopfer, Shun-ichi Ishiuchi, Masaaki Fujii

    Chemical Science   2024

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

    Proton transfer (PT) is one of the most ubiquitous reactions in chemistry and life science. The unique nature of PT has been rationalized not by a transport of a solvated...

    DOI: 10.1039/d3sc05455a

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  • Infrared Spectra of Beauvericin-Alkaline Earth Metal Ion Complexes─Ion Preference to Physiological Ions

    Kien X. Vo, Keisuke Hirata, James M. Lisy, Shun-ichi Ishiuchi, Masaaki Fujii

    The Journal of Physical Chemistry A   2023.8

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

    DOI: 10.1021/acs.jpca.3c02783

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  • Does Chiral Sensitivity of a Structure Depend on the Metal Core? Alkali Ion Complexes of Cyclo(Tyr‐Tyr)

    Koki Yoshizawa, Keisuke Hirata, Shun-ichi Ishiuchi, Masaaki Fujii, Anne Zehnacker

    ChemPhysChem   2023.7

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

    DOI: 10.1002/cphc.202300172

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  • Ion Recognition beyond Size Matching: Cooperative Hydration Effect on the K+ Selectivity of Valinomycin over Na+ Revealed by Cryogenic Double Ion Trap Infrared Spectroscopy

    Keisuke Hirata, Eiko Sato, James M. Lisy, Shun-ichi Ishiuchi, Masaaki Fujii

    The Journal of Physical Chemistry Letters   14 ( 24 )   5567 - 5572   2023.6

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

    DOI: 10.1021/acs.jpclett.3c01030

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  • Can Ag+ Permeate through a Potassium Ion Channel? A Bottom-Up Approach by Infrared Spectroscopy of the Ag+ Complex with the Partial Peptide of a Selectivity Filter

    Satoru Tanabe, Keisuke Hirata, Koichi Tsukiyama, James M. Lisy, Shun-ichi Ishiuchi, Masaaki Fujii

    The Journal of Physical Chemistry Letters   2886 - 2890   2023.3

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

    DOI: 10.1021/acs.jpclett.2c03366

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  • Thermodynamics and kinetics of a partial peptide of K+ channels: DFT transition state calculations coupled with temperature-controlled gas phase laser spectroscopy

    Yukina Suzuki, Keisuke Hirata, James M. Lisy, Shun-ichi Ishiuchi, Masaaki Fujii

    Bulletin of the Chemical Society of Japan   2023.2

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    Publishing type:Research paper (scientific journal)   Publisher:The Chemical Society of Japan  

    DOI: 10.1246/bcsj.20220345

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  • Similarity scores of vibrational spectra reveal the atomistic structure of pentapeptides in multiple basins

    Hiroki Otaki, Shun-ichi Ishiuchi, Masaaki Fujii, Yuji Sugita, Kiyoshi Yagi

    ChemRxiv   10.26434/chemrxiv-2023-qn9rc   2023.2

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  • Stepwise hydration of [CH3COOMg]+ studied by cold ion trap infrared spectroscopy: insights into interactions in the magnesium channel selection filters

    Hikaru Takayanagi, jean-xavier bardaud, Keisuke Hirata, Valerie Brenner, Eric Gloaguen, Shun-ichi Ishiuchi, Masaaki Fujii

    Physical Chemistry Chemical Physics   2023

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

    The magnesium channel controls Mg2+ concentration in the cell and plays an indispensable role in biological functions. The crystal structure of the Magnesium Transport E channel suggested that Mg2+ hydrated...

    DOI: 10.1039/d3cp00992k

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  • Na+ Selective Binding by Beauvericin and Its Mechanism Studied by Mass-Coupled Cold Ion Trap Infrared Spectroscopy

    Kien X. Vo, Keisuke Hirata, James M. Lisy, Shun-ichi Ishiuchi, Masaaki Fujii

    The Journal of Physical Chemistry Letters   11330 - 11334   2022.12

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

    DOI: 10.1021/acs.jpclett.2c02814

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  • Ultraviolet and infrared spectra of mono-, di- and tri-hydrated clusters of protonated noradrenaline – Solvation and conformational variations

    Keisuke Yamaguchi, Keisuke Hirata, Shun-ichi Ishiuchi, Masaaki Fujii

    Chemical Physics Letters   806   140014 - 140014   2022.11

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    Publishing type:Research paper (scientific journal)   Publisher:Elsevier BV  

    DOI: 10.1016/j.cplett.2022.140014

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  • Conformer‐selective Photodynamics of TrpH+‐H2O

    Franco Molina, Jordan Dezalay, Jun-ichi Tabata, Satchin Soorkia, Michel Broquier, Keisuke Hirata, Shun-Ichi Ishiuchi, Masaaki Fujii, Gilles Grégoire

    ChemPhysChem   2022.9

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

    DOI: 10.1002/cphc.202200561

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  • Do Stereochemical Effects Overcome a Charge-Induced Perturbation in Isolated Protonated Cyclo(Tyr-Tyr)?

    Koki Yoshizawa, Keisuke Hirata, Shun-Ichi Ishiuchi, Masaaki Fujii, Anne Zehnacker

    The Journal of Physical Chemistry A   126 ( 37 )   6387 - 6394   2022.9

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

    DOI: 10.1021/acs.jpca.2c03789

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  • Structure of Gas Phase Monohydrated Nicotine: Implications for Nicotine’s Native Structure in the Acetylcholine Binding Protein

    Garrett D. Santis, Naoya Takeda, Keisuke Hirata, Kazuya Tsuruta, Shun-ichi Ishiuchi, Sotiris S. Xantheas, Masaaki Fujii

    Journal of the American Chemical Society   2022.8

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

    DOI: 10.1021/jacs.2c04064

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  • Excited state dynamics of protonated dopamine: Hydration and conformation effects Reviewed

    Keisuke Hirata, Ken-ichi Kasai, Koki Yoshizawa, Gilles Gregoire, Shun-ichi Ishiuchi, Masaaki Fujii

    Physical Chemistry Chemical Physics   24 ( 18 )   10737 - 10744   2022.5

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

    DOI: 10.1039/D2CP00543C

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  • Gas phase protonated nicotine is a mixture of pyridine- and pyrrolidine-protonated conformers: implications for its native structure in the nicotinic acetylcholine receptor

    Naoya Takeda, Keisuke Hirata, Kazuya Tsuruta, Garrett D. Santis, Sotiris S. Xantheas, Shun-ichi Ishiuchi, Masaaki Fujii

    Physical Chemistry Chemical Physics   24 ( 10 )   5786 - 5793   2022

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

    The infrared (IR) spectra of gas phase protonated nicotine has been measured in the never-before probed N–H “fingerprint region” (3200–3500 cm−1).

    DOI: 10.1039/d1cp05175j

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  • Cation-responsive cavity expansion of valinomycin revealed by cryogenic ion trap infrared spectroscopy

    Keisuke Hirata, Eiko Sato, James M. Lisy, Shun-ichi Ishiuchi, Masaaki Fujii

    Physical Chemistry Chemical Physics   2022

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

    Valinomycin (VM) is a natural K+-selective ionophore that transports K+ through the cell membrane. VM captures K+ in its central cavity with a C3-symmetric β-turn-like backbone. Although the binding affinity...

    DOI: 10.1039/d2cp04570b

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  • Hydration-induced protomer switching in p-aminobenzoic acid studied by cold double ion trap infrared spectroscopy

    Kyota Akasaka, Keisuke Hirata, Fuad Haddad, Otto Dopfer, Shun-ichi Ishiuchi, Masaaki Fujii

    Physical Chemistry Chemical Physics   2022

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

    Para-aminobenzoic acid (PABA) is a benchmark molecule to study solvent-induced proton site switching. Protonation of the carboxy and amino groups of PABA generates O- and N-protomers of PABAH+, respectively. Ion...

    DOI: 10.1039/d2cp04497h

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  • Collision-assisted stripping for determination of microsolvation-dependent protonation sites in hydrated clusters by cryogenic ion trap infrared spectroscopy: the case of benzocaineH+(H2O)n

    Keisuke Hirata, Fuad Haddad, Otto Dopfer, Shun-ichi Ishiuchi, Masaaki Fujii

    Physical Chemistry Chemical Physics   24 ( 10 )   5774 - 5779   2022

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

    Protonation sites in hydrated clusters can be clearly determined by CAS-IRPD (collision-assisted stripping infrared photodissociation) spectroscopy as shown for the example of hydrated protonated benzocaine.

    DOI: 10.1039/d1cp05762f

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  • A Bottom-up approach to the ion recognition mechanism of K+ channels from the laser spectroscopy of hydrated partial peptide - alkali metal ion complexes

    Yukina Suzuki, Keisuke Hirata, James M. Lisy, Shun-ichi Ishiuchi, Masaaki Fujii

    Physical Chemistry Chemical Physics   2022

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

    K+ channels allow selective permeation of K+, but not physiologically abundant Na+, at almost diffusion limit rates. The conduction mechanism of K+ channels is still controversial, with experimental and computation...

    DOI: 10.1039/d2cp01667b

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  • Distribution of trace impurities in microvolumes and analysis of concentration using laser sputtered neutral mass spectrometry

    Haruko Akutsu, Reiko Saito, Jun Asakawa, Kei Kiyokawa, Masato Morita, Tetsuo Sakamoto, Masaaki Fujii

    Journal of Vacuum Science and Technology B: Nanotechnology and Microelectronics   39 ( 6 )   2021.12

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:AVS Science and Technology Society  

    DOI: 10.1116/6.0001244

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  • Hydration-controlled excited-state relaxation in protonated dopamine studied by cryogenic ion spectroscopy

    Keisuke Hirata, Ken-ichi Kasai, Gilles Grégoire, Shun-ichi Ishiuchi, Masaaki Fujii

    The Journal of Chemical Physics   155 ( 15 )   151101 - 151101   2021.10

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

    DOI: 10.1063/5.0066919

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  • Double Ion Trap Laser Spectroscopy of Alkali Metal Ion Complexes with a Partial Peptide of the Selectivity Filter in K+ Channels—Temperature Effect and Barrier for Conformational Conversions

    Yukina Suzuki, Keisuke Hirata, James M. Lisy, Shun-ichi Ishiuchi, Masaaki Fujii

    The Journal of Physical Chemistry A   2021.10

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

    DOI: 10.1021/acs.jpca.1c06440

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  • Rethinking Ion Transport by Ionophores: Experimental and Computational Investigation of Single Water Hydration in Valinomycin-K+ Complexes

    Eiko Sato, Keisuke Hirata, James M. Lisy, Shun-ichi Ishiuchi, Masaaki Fujii

    The Journal of Physical Chemistry Letters   1754 - 1758   2021.2

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

    DOI: 10.1021/acs.jpclett.0c03372

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  • Potassium and Sodium Ions Complexes with a Partial Peptide of the Selectivity Filter in K+ Channels Studied by Cold Ion Trap Infrared Spectroscopy: Effect of Hydration

    Takumi Negoro, Keisuke Hirata, James M. Lisy, Shun-ichi Ishiuchi, Masaaki Fujii

    Physical Chemistry Chemical Physics   2021

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

    <p>Potassium channels allow K+ to rapidly diffuse, while the selectivity filter (SF) actively blocks Na+. The presence of water in the SF during ion translocation remains under debate due the...</p>

    DOI: 10.1039/d1cp00936b

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  • Revealing the role of excited state proton transfer (ESPT) in excited state hydrogen transfer (ESHT): systematic study in phenol–(NH3)n clusters

    Christophe Jouvet, Mitsuhiko Miyazaki, Masaaki Fujii

    Chemical Science   12 ( 11 )   3836 - 3856   2021

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

    <p>A general model of excited state hydrogen transfer (ESHT) which unifies ESHT and the excited state proton transfer (ESPT) is presented from experimental and theoretical works on phenol–(NH3)<italic>n</italic>. The hidden role of ESPT is revealed.</p>

    DOI: 10.1039/d0sc06877b

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  • IR super-resolution imaging of avian feather keratins detected by using vibrational sum-frequency generation. International journal

    Yukihisa Watase, Hirona Takahashi, Kohei Ushio, Masaaki Fujii, Makoto Sakai

    Biophysical chemistry   267   106482 - 106482   2020.9

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

    IR super-resolution imaging of the cross section of the rachis of an avian feather was carried out by using a vibrational sum-frequency generation (VSFG) detected IR microscope with a sub-micrometer spatial resolution. In the YYX polarization combination, we clearly observed strong signals in the entire region of the rachis at the amide I vibration of β-keratin. On the other hand, the signal disappears from most of the cross section in the XXY polarization combination. Because the VSFG imaging detects the signal only from the interface, we conclude that the interfacial deflection inside of a rachis was detected.

    DOI: 10.1016/j.bpc.2020.106482

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  • Cryogenic Ion Spectroscopy of a Singly Protonated Peptide DYYVVR: Locating Phosphorylation Sites of a Kinase Domain

    Jang Han Kwon, Min Ji Lee, Gyeongok Song, Kazuya Tsuruta, Shun-Ichi Ishiuchi, Masaaki Fujii, Hyuk Kang

    Journal of Physical Chemistry Letters   11 ( 17 )   7103 - 7108   2020.9

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    DOI: 10.1021/acs.jpclett.0c01802

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  • Alkali and Alkaline Earth Metal Ions Complexes with a Partial Peptide of the Selectivity Filter in K+ Channels Studied by a Cold Ion Trap Infrared Spectroscopy

    Remina Otsuka, Keisuke Hirata, Yuta Sasaki, James M. Lisy, Shun-ichi Ishiuchi, Masaaki Fujii

    ChemPhysChem   21 ( 8 )   712 - 724   2020.4

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    DOI: 10.1002/cphc.202000033

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  • Alkali and Alkaline Earth Metal Ions Complexes with a Partial Peptide of the Selectivity Filter in K+ Channels Studied by a Cold Ion Trap Infrared Spectroscopy

    Remina Otsuka, Keisuke Hirata, Yuta Sasaki, James M. Lisy, Shun-Ichi Ishiuchi, Masaaki Fujii

    Chemphyschem : a European journal of chemical physics and physical chemistry   21 ( 8 )   687   2020.4

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    DOI: 10.1002/cphc.202000246

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  • Improvement of ionization yield in sputtered neutral mass spectrometry using pulsed infrared and ultraviolet lasers Reviewed International journal

    Reiko Saito, Haruko Akutsu, Jun Asakawa, Yue Zhao, Kei Kiyokawa, Masato Morita, Tetsuo Sakamoto, Masaaki Fujii

    J. Vac. Sci. Technol. B   38 ( 3 )   034011   2020.4

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    DOI: 10.1116/6.0000088

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  • Excited-state proton transfer in protonated adrenaline revealed by cryogenic UV photodissociation spectroscopy Reviewed

    Jordan Dezalay, Michel Broquier, Satchin Soorkia, Keisuke Hirata, Shun-ichi Ishiuchi, Masaaki Fujii, Gilles Grégoire

    Physical Chemistry Chemical Physics   22 ( 20 )   11498 - 11507   2020

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    <p>Excited state proton transfer is the main non radiative deactivation process in protonated adrenaline.</p>

    DOI: 10.1039/d0cp01127d

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  • Excited state hydrogen transfer dynamics in phenol–(NH3)2 studied by picosecond UV-near IR-UV time-resolved spectroscopy

    Shun-ichi Ishiuchi, Junko Kamizori, Norihiro Tsuji, Makoto Sakai, Mitsuhiko Miyazaki, Claude Dedonder, Christophe Jouvet, Masaaki Fujii

    Physical Chemistry Chemical Physics   22 ( 10 )   5740 - 5748   2020

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    <p>Intersystem crossing from 1πσ* to 3πσ* states traps excited state hydrogen transfer reaction in a bound state formed by 3ππ* and 3πσ* states.</p>

    DOI: 10.1039/c9cp06369b

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  • Chiral discrimination between tyrosine and β-cyclodextrin revealed by cryogenic ion trap infrared spectroscopy

    Keisuke Hirata, Yuta Mori, Shun-ichi Ishiuchi, Masaaki Fujii, Anne Zehnacker

    Physical Chemistry Chemical Physics   2020

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    <p>Cryogenic ion trap infrared spectroscopy reveals that different binding motifs between the two enantiomers of protonated tyrosine and permethylated β-cyclodextrin result in chiral discrimination.</p>

    DOI: 10.1039/d0cp02968h

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  • Ionization-Induced π→H Site Switching in Resorcinol?Arn?(N = 1 and 2) Clusters Probed by Infrared Spectroscopy Reviewed

    Mitsuhiko Miyazaki, Kuntal Chatterjee, Kaori Hattori, Remina Otsuka, Shun-ichi Ishiuchi, Otto Dopfer, Masaaki Fujii

    The Journal of Physical Chemistry A   123 ( 32 )   6828 - 6839   2019.8

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    DOI: 10.1021/acs.jpca.9b04460

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  • Probing the selectivity of Li+ and Na+ cations on noradrenaline at the molecular level Reviewed

    Shun-ichi Ishiuchi, Hiromichi Wako, Sotiris S. Xantheas, Masaaki Fujii

    Faraday Discussions   217   396 - 413   2019.7

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  • Can the Partial Peptide SIVSF of the β2-Adrenergic Receptor Recognize Chirality of the Epinephrine Neurotransmitter? Reviewed

    Masato Tamura, Tsubasa Sekiguchi, Shun-ichi Ishiuchi, Anne Zehnacker-Rentien, Masaaki Fujii

    The Journal of Physical Chemistry Letters   10 ( 10 )   2470 - 2474   2019.5

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    DOI: 10.1021/acs.jpclett.9b00184

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  • Ion-peptide interactions between alkali metal ions and a termini-protected dipeptide; Modeling a portion of the selectivity filter in K+ channels Reviewed

    Shun-ichi Ishiuchi, Yuta Sasaki, James M. Lisy, Masaaki Fujii

    Physical Chemistry Chemical Physics   21 ( 2 )   561 - 571   2019.1

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    DOI: 10.1039/C8CP05839C

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  • Probing chirality recognition of protonated glutamic acid dimers by gas-phase vibrational spectroscopy and first-principles simulations Reviewed

    Johanna Klyne, Aude Bouchet, Shun-ichi Ishiuchi, Masaaki Fujii, Markus Schneider, Carsten Baldauf, Otto Dopfer

    Physical Chemistry Chemical Physics   20 ( 45 )   28452 - 28464   2018.12

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  • Electron-proton transfer mechanism of excited-state hydrogen transfer in phenol?(NH3)n (n?=?5) studied by delayed ionization detected femtosecond time-resolved NIR spectroscopy Reviewed

    Mitsuhiko Miyazaki, Nozomi Washio, Masaaki Fujii

    Chemical Physics   515   580 - 585   2018.11

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    DOI: 10.1016/j.chemphys.2018.08.004

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  • Entropic effects make a more tightly folded conformer of a β-amino acid less stable: UV-UV hole burning and IR dip spectroscopy of L-β3-homotryptophan using a laser desorption supersonic jet technique Reviewed

    Woon Yong Sohn, Jeong Jin Kim, Myeongwon Jeon, Takuma Aoki, Shun-ichi Ishiuchi, Masaaki Fujii, Hyuk Kang

    Physical Chemistry Chemical Physics   20 ( 30 )   19979 - 19986   2018.8

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    DOI: 10.1039/C8CP02106F

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  • Molecular Recognition by a Short Partial Peptide of the Adrenergic Receptor: A Bottom-Up Approach Reviewed

    Tsubasa Sekiguchi, Masato Tamura, Hikari Oba, Pierre Çarçarbal, Rolando Rafael Lozada-Garcia, Anne Zehnacker-Rentien, Gilles Grégoire, Shun-Ichi Ishiuchi, Masaaki Fujii

    Angewandte Chemie - International Edition   57 ( 20 )   5626 - 5629   2018.5

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    DOI: 10.1002/anie.201712976

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  • Bevel depth profiling by high-spatial-resolution sputtered neutral mass spectrometry with laser postionization Reviewed

    Takahiro Kashiwagi, Satoru Nagashima, Takeharu Ishikawa, Akio Takano, Suet-Yi Liu, Hisataka Takenaka, Katsumi Endo, Masaaki Fujii

    Journal of Vacuum Science and Technology B: Nanotechnology and Microelectronics   36 ( 3 )   03F133-1 - 03F133-7   2018.5

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    DOI: 10.1116/1.5019692

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  • Matrix and element dependences of useful yield in Si and SiO2 matrices using laser-ionization sputtered neutral mass spectrometry Reviewed

    Reiko Saito, Haruko Akutsu, Jun Asakawa, Shiro Takeno, Kei Kiyokawa, Satoru Nagashima, Takeharu Ishikawa, Takahiro Kashiwagi, Akio Takano, Tetsuo Sakamoto, Masaaki Fujii

    Journal of Vacuum Science and Technology B: Nanotechnology and Microelectronics   36 ( 3 )   03F128-1 - 03F128-5   2018.5

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    DOI: 10.1116/1.5018092

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  • Cation-Size-Dependent Conformational Locking of Glutamic Acid by Alkali Ions: Infrared Photodissociation Spectroscopy of Cryogenic Ions Reviewed

    Johanna Klyne, Aude Bouchet, Shun-Ichi Ishiuchi, Masaaki Fujii, Otto Dopfer

    Journal of Physical Chemistry B   122 ( 8 )   2295 - 2306   2018.3

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    DOI: 10.1021/acs.jpcb.7b12601

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  • Complex molecular systems: A frontier of molecular science Reviewed

    Tahei Tahara, Akio Kitao, Yasuhisa Mizutani, Hideki Kandori, Masaaki Fujii

    Physical Chemistry Chemical Physics   20 ( 5 )   2945 - 2946   2018.2

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    DOI: 10.1039/c8cp90010h

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  • Stepwise microhydration of aromatic amide cations: Water solvation networks revealed by the infrared spectra of acetanilide+-(H2O)N clusters (n ≤ 3) Reviewed

    Johanna Klyne, Matthias Schmies, Mitsuhiko Miyazaki, Masaaki Fujii, Otto Dopfer

    Physical Chemistry Chemical Physics   20 ( 5 )   3148 - 3164   2018.2

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    DOI: 10.1039/c7cp04659f

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  • A theoretical study on the size-dependence of ground-state proton transfer in phenol-ammonia clusters Reviewed

    Toshihiko Shimizu, Kenro Hashimoto, Masahiko Hada, Mitsuhiko Miyazaki, Masaaki Fujii

    Physical Chemistry Chemical Physics   20 ( 5 )   3265 - 3276   2018.2

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    DOI: 10.1039/c7cp05247b

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  • Real-time observation of the photoionization-induced water rearrangement dynamics in the 5-hydroxyindole-water cluster by time-resolved IR spectroscopy Reviewed

    Mitsuhiko Miyazaki, Ayumi Naito, Takamasa Ikeda, Johanna Klyne, Kenji Sakota, Hiroshi Sekiya, Otto Dopfer, Masaaki Fujii

    Physical Chemistry Chemical Physics   20 ( 5 )   3079 - 3091   2018.2

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    DOI: 10.1039/c7cp06127g

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  • Sequential microhydration of cationic 5-hydroxyindole (5HI+): Infrared photodissociation spectra of 5HI+-W:N clusters (W = H2O, n ≤ 4) Reviewed

    Johanna Klyne, Mitsuhiko Miyazaki, Masaaki Fujii, Otto Dopfer

    Physical Chemistry Chemical Physics   20 ( 5 )   3092 - 3108   2018.2

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    DOI: 10.1039/c7cp06132c

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  • Electron-Proton Transfer Mechanism of Excited-State Hydrogen Transfer in Phenol-(NH3)n (n=3 and 5) Reviewed

    Mitsuhiko Miyazaki, Ryuhei Ohara, Claude Dedonder, Christophe Jouvet, Masaaki Fujii

    Chemistry - A European Journal   24 ( 4 )   881 - 890   2018.1

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    DOI: 10.1002/chem.201704129

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  • Stereochemistry-dependent structure of hydrogen-bonded protonated dimers: The case of 1-amino-2-indanol Reviewed

    Aude Bouchet, Johanna Klyne, Shun-Ichi Ishiuchi, Otto Dopfer, Masaaki Fujii, Anne Zehnacker

    Physical Chemistry Chemical Physics   20 ( 18 )   12430 - 12443   2018

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    DOI: 10.1039/c8cp00787j

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  • A structural study on the excimer state of an isolated benzene dimer using infrared spectroscopy in the skeletal vibration region Reviewed

    Mitsuhiko Miyazaki, Masaaki Fujii

    PHYSICAL CHEMISTRY CHEMICAL PHYSICS   19 ( 34 )   22759 - 22776   2017.9

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    DOI: 10.1039/c7cp03480f

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  • Deciphering environment effects in peptide bond solvation dynamics by experiment and theory Reviewed

    Matthias Wohlgemuth, Mitsuhiko Miyazaki, Kohei Tsukada, Martin Weiler, Otto Dopfer, Masaaki Fujii, Roland Mitric

    PHYSICAL CHEMISTRY CHEMICAL PHYSICS   19 ( 33 )   22564 - 22572   2017.9

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    DOI: 10.1039/c7cp03992a

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  • A conformational study of protonated noradrenaline by UV-UV and IR dip double resonance laser spectroscopy combined with an electrospray and a cold ion trap method Reviewed

    Hiromichi Wako, Shun-ichi Ishiuchi, Daichi Kato, Geraldine Feraud, Claude Dedonder-Lardeux, Christophe Jouvet, Masaaki Fujii

    PHYSICAL CHEMISTRY CHEMICAL PHYSICS   19 ( 17 )   10777 - 10785   2017.5

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    DOI: 10.1039/c6cp08426e

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  • Conformation of protonated glutamic acid at room and cryogenic temperatures Reviewed

    Aude Bouchet, Johanna Klyne, Shun-ichi Ishiuchi, Masaaki Fujii, Otto Dopfer

    PHYSICAL CHEMISTRY CHEMICAL PHYSICS   19 ( 17 )   10767 - 10776   2017.5

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    DOI: 10.1039/c6cp08553a

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  • High-cooling-efficiency cryogenic quadrupole ion trap and UV-UV hole burning spectroscopy of protonated tyrosine Reviewed

    Shun-ichi Ishiuchi, Hiromichi Wako, Daichi Kato, Masaaki Fujii

    JOURNAL OF MOLECULAR SPECTROSCOPY   332   45 - 51   2017.2

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    DOI: 10.1016/j.jms.2016.10.011

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  • Anharmonic Vibrational Analyses of Pentapeptide Conformations Explored with Enhanced Sampling Simulations Reviewed

    Hiroki Otaki, Kiyoshi Yagi, Shun-ichi Ishiuchi, Masaaki Fujii, Yuji Sugita

    JOURNAL OF PHYSICAL CHEMISTRY B   120 ( 39 )   10199 - 10213   2016.10

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  • Gas phase ultraviolet and infrared spectroscopy on a partial peptide of beta(2)-adrenoceptor SIVSF-NH2 by a laser desorption supersonic jet technique Reviewed

    Shun-ichi Ishiuchi, Kohei Yamada, Hikari Oba, Hiromichi Wako, Masaaki Fujii

    PHYSICAL CHEMISTRY CHEMICAL PHYSICS   18 ( 33 )   23277 - 23284   2016.9

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    DOI: 10.1039/c6cp04196e

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  • Theoretical Study on the Size Dependence of Ground-State Proton Transfer in 1-Naphthol-Ammonia Clusters Reviewed

    Toshihiko Shimizu, Mitsuhiko Miyazaki, Masaaki Fujii

    JOURNAL OF PHYSICAL CHEMISTRY A   120 ( 36 )   7167 - 7174   2016.9

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    DOI: 10.1021/acs.jpca.6b07079

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  • Probing Solvation Dynamics around Aromatic and Biological Review Molecules at the Single-Molecular Level

    Otto Dopfer, Masaaki Fujii

    CHEMICAL REVIEWS   116 ( 9 )   5432 - 5463   2016.5

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  • Effective Strategy for Conformer-Selective Detection of Short-Lived Excited State Species: Application to the IR Spectroscopy of the N1H Keto Tautomer of Guanine Reviewed

    Hiroya Asami, Munefumi Tokugawa, Yoshiaki Masaki, Shun-ichi Ishiuchi, Eric Gloaguen, Kohji Seio, Hiroyuki Saigusa, Masaaki Fujii, Mitsuo Sekine, Michel Mons

    JOURNAL OF PHYSICAL CHEMISTRY A   120 ( 14 )   2179 - 2184   2016.4

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  • Structural motifs of 2-(2-fluoro-phenyl)-ethylamine conformers Reviewed

    Nitzan Mayorkas, Hanan Sachs, Markus Schuetz, Shun-ichi Ishiuchi, Masaaki Fujii, Otto Dopfer, Ilana Bar

    PHYSICAL CHEMISTRY CHEMICAL PHYSICS   18 ( 2 )   1191 - 1201   2016.1

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    DOI: 10.1039/c5cp06131h

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  • Photoionization-induced pi &lt;-&gt; H site switching dynamics in phenol(+)-Rg (Rg = Ar, Kr) dimers probed by picosecond time-resolved infrared spectroscopy Reviewed

    Mitsuhiko Miyazaki, Yuri Sakata, Markus Schuetz, Otto Dopfer, Masaaki Fujii

    PHYSICAL CHEMISTRY CHEMICAL PHYSICS   18 ( 35 )   24746 - 24754   2016

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    DOI: 10.1039/c6cp05016f

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  • Trapped Hydronium Radical Produced by Ultraviolet Excitation of Substituted Aromatic Molecule Reviewed

    Federico J. Hernandez, Marcela C. Capello, Ayumi Naito, Shun Manita, Kohei Tsukada, Mitsuhiko Miyazaki, Masaaki Fujii, Michel Broquier, Gilles Gregoire, Claude Dedonder-Lardeux, Christophe Jouvet, Gustavo A. Pino

    JOURNAL OF PHYSICAL CHEMISTRY A   119 ( 51 )   12730 - 12735   2015.12

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    DOI: 10.1021/acs.jpca.5b10142

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  • Electron-Proton Decoupling in Excited-State Hydrogen Atom Transfer in the Gas Phase Reviewed

    Mitsuhiko Miyazaki, Ryuhei Ohara, Kota Daigoku, Kenro Hashimoto, Jonathan R. Woodward, Claude Dedonder, Christophe Jouvet, Masaaki Fujii

    ANGEWANDTE CHEMIE-INTERNATIONAL EDITION   54 ( 50 )   15089 - 15093   2015.12

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    DOI: 10.1002/anie.201506467

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  • Spectroscopic study of jet-cooled indole-3-carbinol by laser desorption technique: Franck-Condon simulations and anharmonic calculations Reviewed

    Ahreum Ahn, Ahreum Min, Cheol Joo Moon, Ji Hoon Lee, Seung Jun Lee, Taichi Warashina, Shun-ichi Ishiuchi, Masaaki Fujii, Myong Yong Choi

    CHEMICAL PHYSICS LETTERS   638   237 - 243   2015.10

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    DOI: 10.1016/j.cplett.2015.08.063

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  • Theoretical Study on the Size Dependence of Excited State Proton Transfer in 1-Naphthol-Ammonia Clusters Reviewed

    Toshihiko Shimizu, Shunpei Yoshikawa, Kenro Hashimoto, Mitsuhiko Miyazaki, Masaaki Fujii

    JOURNAL OF PHYSICAL CHEMISTRY B   119 ( 6 )   2415 - 2424   2015.2

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    DOI: 10.1021/jp507222n

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  • Stepwise Microhydration of Aromatic Amide Cations: Formation of Water Solvation Network Revealed by Infrared Spectra of Formanilide(+)-(H2O)(n) Clusters (n &lt;= 5) Reviewed

    Johanna Klyne, Matthias Schmies, Masaaki Fujii, Otto Dopfer

    JOURNAL OF PHYSICAL CHEMISTRY B   119 ( 4 )   1388 - 1406   2015.1

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    DOI: 10.1021/jp511421h

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  • Mass analyzed threshold ionization detected infrared spectroscopy: isomerization activity of the phenol-Ar cluster near the ionization threshold Reviewed

    Mitsuhiko Miyazaki, Shunpei Yoshikawa, Francois Michels, Kentaro Misawa, Shun-ichi Ishiuchi, Makoto Sakai, Otto Dopfer, Klaus Mueller-Dethlefs, Masaaki Fujii

    PHYSICAL CHEMISTRY CHEMICAL PHYSICS   17 ( 4 )   2494 - 2503   2015.1

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    DOI: 10.1039/c4cp04584j

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  • Single water solvation dynamics in the 4-aminobenzonitrile-water cluster cation revealed by picosecond time-resolved infrared spectroscopy Reviewed

    Mitsuhiko Miyazaki, Takashi Nakamura, Matthias Wohlgemuth, Roland Mitric, Otto Dopfer, Masaaki Fujii

    PHYSICAL CHEMISTRY CHEMICAL PHYSICS   17 ( 44 )   29969 - 29977   2015

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    DOI: 10.1039/c5cp05400a

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  • The mechanism of excited-state proton transfer in 1-naphthol-piperidine clusters Reviewed

    Toshihiko Shimizu, Shun Manita, Shunpei Yoshikawa, Kenro Hashimoto, Mitsuhiko Miyazaki, Masaaki Fujii

    PHYSICAL CHEMISTRY CHEMICAL PHYSICS   17 ( 38 )   25393 - 25402   2015

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    DOI: 10.1039/c5cp03620h

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  • Real time observation of the excimer formation dynamics of a gas phase benzene dimer by picosecond pump-probe spectroscopy Reviewed

    Mitsuhiko Miyazaki, Masaaki Fujii

    PHYSICAL CHEMISTRY CHEMICAL PHYSICS   17 ( 39 )   25989 - 25997   2015

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    DOI: 10.1039/c5cp03010b

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  • UV-UV hole burning and IR dip spectroscopy of homophenylalanine by laser desorption supersonic jet technique Reviewed

    Woon Yong Sohn, Shun-ichi Ishiuchi, Pierre Carcabal, Hikari Oba, Masaaki Fujii

    CHEMICAL PHYSICS   445   21 - 30   2014.12

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    DOI: 10.1016/j.chemphys.2014.10.012

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  • Microhydrated aromatic cluster cations: Binding motifs of 4-aminobenzonitrile-(H2O)(n) cluster cations with n &lt;= 4 Reviewed

    Matthias Schmies, Mitsuhiko Miyazaki, Masaaki Fujii, Otto Dopfer

    JOURNAL OF CHEMICAL PHYSICS   141 ( 21 )   214301-1 - 214301-17   2014.12

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    DOI: 10.1063/1.4901893

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  • Solvation Dynamics of a Single Water Molecule Probed by Infrared Spectra-Theory Meets Experiment Reviewed

    Matthias Wohlgemuth, Mitsuhiko Miyazaki, Martin Weiler, Makoto Sakai, Otto Dopfer, Masaaki Fujii, Roland Mitric

    ANGEWANDTE CHEMIE-INTERNATIONAL EDITION   53 ( 52 )   14601 - 14604   2014.12

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    DOI: 10.1002/anie.201409047

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  • 有機物のナノスケール分析とマッピングを目的としたLaser-SNMS分析装置の開発−ブレンドポリマー双分離構造の直接観察− // Development of a Laser-SNMS Instrument for Nanoscale Analysis and Mapping of Organic Materials--Direct Observation of Phase Separation Structure in Blend Polymer -- Reviewed

    石川 丈晴, 柏木 隆宏, 坂本 哲夫, 三澤 健太郎, 藤井 正明, 蜂谷 正樹, 野田 浩之, 遠藤 克己, Takeharu Ishikawa, Takahiro Kashiwagi, Tetsuo Sakamoto, Kentaro Misawa, Masaaki Fujii, Masaki Hachiya, Hiroyuki Noda, Katsumi Endo

    表面科学 Journal of the Surface Science Society of Japan   35 ( 7 )   383 - 388   2014.7

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    DOI: 10.1380/jsssj.35.383

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  • Fast Nonradiative Decay in o-Aminophenol Reviewed

    Marcela C. Capello, Michel Broquier, Shun-Ichi Ishiuchi, Woon Y. Sohn, Masaaki Fujii, Claude Dedonder-Lardeux, Christophe Jouvet, Gustavo A. Pino

    JOURNAL OF PHYSICAL CHEMISTRY A   118 ( 11 )   2056 - 2062   2014.3

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    DOI: 10.1021/jp411457v

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  • Solvent Migration in Microhydrated Aromatic Aggregates: Ionization-Induced Site Switching in the 4-Aminobenzonitrile-Water Cluster Reviewed

    Takashi Nakamura, Matthias Schmies, Alexander Patzer, Mitsuhiko Miyazaki, Shun-ichi Ishiuchi, Martin Weiler, Otto Dopfer, Masaaki Fujii

    CHEMISTRY-A EUROPEAN JOURNAL   20 ( 7 )   2031 - 2039   2014.2

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    DOI: 10.1002/chem.201303321

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  • STED,蛍光ディップ手法における高解像度実現の共通原理 (特集 より深く,より細かく観察する高機能レーザー顕微鏡)

    酒井 誠, 藤井 正明

    O plus E : Optics・Electronics   36 ( 2 )   147 - 151   2014.2

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  • Ionization-induced pi -&gt; H site-switching in phenol-CH4 complexes studied using IR dip spectroscopy Reviewed

    Mitsuhiko Miyazaki, Akihiro Takeda, Matthias Schmies, Makoto Sakai, Kentaro Misawa, Shun-ichi Ishiuchi, Francois Michels, Klaus Mueller-Dethlefs, Otto Dopfer, Masaaki Fujii

    PHYSICAL CHEMISTRY CHEMICAL PHYSICS   16 ( 1 )   110 - 116   2014

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    DOI: 10.1039/c3cp53533a

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  • Microsolvation of the acetanilide cation (AA(+)) in a nonpolar solvent: IR spectra of AA(+)-L-n clusters (L = He, Ar, N-2; n &lt;= 10) Reviewed

    Matthias Schmies, Alexander Patzer, Markus Schuetz, Mitsuhiko Miyazaki, Masaaki Fujii, Otto Dopfer

    PHYSICAL CHEMISTRY CHEMICAL PHYSICS   16 ( 17 )   7980 - 7995   2014

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    DOI: 10.1039/c4cp00401a

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  • Unusual Behavior in the First Excited State Lifetime of Catechol Reviewed

    Martin Weiler, Mitsuhiko Miyazaki, Geraldine Feraud, Shun-ichi Ishiuchi, Claude Dedonder, Christophe Jouvet, Masaaki Fujji

    JOURNAL OF PHYSICAL CHEMISTRY LETTERS   4 ( 22 )   3819 - 3823   2013.11

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    DOI: 10.1021/jz402089m

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  • IR-UV Double Resonance Spectroscopy as Implemented by Polarized Laser Schemes: Probing Orientations of Vibrational Transition Dipole Moments Reviewed

    Shu-hei Urashima, Mitsuhiko Miyazaki, Masaaki Fujii, Hiroyuki Saigusa

    CHEMISTRY LETTERS   42 ( 9 )   1070 - 1072   2013.9

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    DOI: 10.1246/cl.130425

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  • Selective detection of polyaromatic hydrocarbons on diesel exhaust particles using sputtered neutral mass spectrometry Reviewed

    Tetsuo Sakamoto, Kenji Ohishi, Shun-Ichi Hayashi, Masaaki Fujii

    Surface and Interface Analysis   45 ( 8 )   1309 - 1312   2013.8

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    DOI: 10.1002/sia.5284

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  • Gas-Phase Spectroscopy of Laser-Desorbed Acedan and Proline-Acedan Reviewed

    Hae Jun Jung, Woon Yong Sohn, Cheol Ho Heo, Hwan Myung Kim, Shun-ichi Ishiuchi, Masaaki Fujii, Hyuk Kang

    BULLETIN OF THE KOREAN CHEMICAL SOCIETY   34 ( 8 )   2241 - 2242   2013.8

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    DOI: 10.5012/bkcs.2013.34.8.2241

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  • Structural analysis of aerosol particles by microscopic observation using a time-of-flight secondary ion mass spectrometer Reviewed

    Akinori Takami, Norihito Mayama, Tetsuo Sakamoto, Kenji Ohishi, Satoshi Irei, Ayako Yoshino, Shiro Hatakeyama, Kentaro Murano, Yasuhiro Sadanaga, Hiroshi Bandow, Kentaro Misawa, Masaaki Fujii

    Journal of Geophysical Research Atmospheres   118 ( 12 )   6726 - 6737   2013.6

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    DOI: 10.1002/jgrd.50477

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  • Gas-phase spectroscopy and anharmonic vibrational analysis of the 3-residue peptide Z-Pro-Leu-Gly-NH2 by the laser desorption supersonic jet technique Reviewed

    Shun-ichi Ishiuchi, Kohei Yamada, Shamik Chakraborty, Kiyoshi Yagi, Masaaki Fujii

    CHEMICAL PHYSICS   419   145 - 152   2013.6

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    DOI: 10.1016/j.chemphys.2012.12.038

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  • Quaternary and secondary structural imaging of a human hair by a VSFG-detected IR super-resolution microscope Reviewed

    Makoto Sakai, Katsuya Kikuchi, Masaaki Fujii

    CHEMICAL PHYSICS   419   261 - 265   2013.6

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    DOI: 10.1016/j.chemphys.2013.02.016

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  • Editorial Reviewed

    Fujii Masaaki, Tahara Tahei, Mizutani Yasuhisa

    CHEMICAL PHYSICS   419   1   2013.6

  • Preface Reviewed

    Masaaki Fujii, Tahei Tahara, Yasuhisa Mizutani

    Chemical Physics   419   1-1 - 1-1   2013.6

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    DOI: 10.1016/j.chemphys.2013.04.003

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  • Structural analysis of aerosol particles by microscopic observation using a time-of-flight secondary ion mass spectrometer Reviewed

    Akinori Takami, Norihito Mayama, Tetsuo Sakamoto, Kenji Ohishi, Satoshi Irei, Ayako Yoshino, Shiro Hatakeyama, Kentaro Murano, Yasuhiro Sadanaga, Hiroshi Bandow, Kentaro Misawa, Masaaki Fujii

    JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES   118 ( 12 )   6726 - 6737   2013.6

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    DOI: 10.1002/jgrd.50477

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  • Untitled

    Masaaki Fujii, Tahei Tahara, Yasuhisa Mizutani

    CHEMICAL PHYSICS   419   1 - 1   2013.6

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  • Revised conformational assignments and conformational evolution of tyrosine by laser desorption supersonic jet laser spectroscopy Reviewed

    Yoko Shimozono, Kohei Yamada, Shun-Ichi Ishiuchi, Koichi Tsukiyama, Masaaki Fujii

    Physical Chemistry Chemical Physics   15 ( 14 )   5163 - 5175   2013.4

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    DOI: 10.1039/c3cp43573c

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  • Microsolvation of the 4-aminobenzonitrile cation (abn+) in a nonpolar solvent: IR spectra of ABN+-Ln (L=Ar and N 2, n≤4) Reviewed

    Matthias Schmies, Alexander Patzer, Sarah Kruppe, Mitsuhiko Miyazaki, Shun-Ichi Ishiuchi, Masaaki Fujii, Otto Dopfer

    ChemPhysChem   14 ( 4 )   728 - 740   2013.3

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    DOI: 10.1002/cphc.201200790

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  • Imaging of Polycyclic Aromatic Hydrocarbons by Means of Sputtered Neutrals Mass Spectrometry Using a Diode-pumped Solid-State Laser Reviewed

    Kenji Ohishi, Tetsuo Sakamoto, Jiro Saikawa, Naoya Ishigaki, Koji Tojo, Yutaka Ido, Shun-ichi Hayashi, Shun-ichi Ishiuchi, Kentaro Misawa, Masaaki Fujii

    ANALYTICAL SCIENCES   29 ( 3 )   291 - 295   2013.3

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    DOI: 10.2116/analsci.29.291

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  • IR Spectroscopy of the 4-AminobenzonitrileAr Cluster in the S0, S1 Neutral and D0 Cationic States Reviewed

    Takashi Nakamura, Mitsuhiko Miyazaki, Shun-ichi Ishiuchi, Martin Weiler, Matthias Schmies, Otto Dopfer, Masaaki Fujii

    CHEMPHYSCHEM   14 ( 4 )   741 - 745   2013.3

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    DOI: 10.1002/cphc.201200821

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  • Analysis of source apportionment and chemical transformation of particles in trans-boundary air pollution using high lateral resolution imaging SIMS Reviewed

    Tetsuo Sakamoto, Kenji Ohishi, Yusuke Miura, Masaaki Fujii, Kentaro Misawa, Norihito Mayama, Mikko Riese, Kana Kitatsugu, Akinori Takami, Satoshi Irei, Shiro Hatakeyama, Ayako Yoshino, Kentaro Murano, Takuma Mukaida, Hiroshi Bandow, Yasuhiro Sadanaga

    Technical Reports of the Meteorological Research Institute   68   59 - 60   2013.2

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  • Laser post-ionization mass spectrometry of PAHs on diesel soot particle Reviewed

    Kenji Ohishi, Norihito Mayama, Kana Kitatsugu, Kentaro Misawa, Tetsuo Sakamoto, Masaaki Fujii

    Technical Reports of the Meteorological Research Institute   68   55 - 56   2013.2

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  • Structure of 1-naphthol-water clusters in the S-1 state studied by UV-IR fluorescence dip spectroscopy and ab initio molecular orbital calculations Reviewed

    Toshihiko Shimizu, Ruriko Yoshino, Shun-ichi Ishiuchi, Kenro Hashimoto, Mitsuhiko Miyazaki, Masaaki Fujii

    CHEMICAL PHYSICS LETTERS   557   19 - 25   2013.2

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    DOI: 10.1016/j.cplett.2012.11.030

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  • Ground State Proton Transfer in Phenol-(NH3)(n) (n &lt;= 11) Clusters Studied by Mid-IR Spectroscopy in 3-10 mu m Range Reviewed

    Mitsuhiko Miyazaki, Ayako Kawanishi, Iben Nielsen, Ivan Alata, Shun-ichi Ishiuchi, Claude Dedonder, Christophe Jouvet, Masaaki Fujii

    JOURNAL OF PHYSICAL CHEMISTRY A   117 ( 7 )   1522 - 1530   2013.2

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    DOI: 10.1021/jp312074m

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  • Analysis of black carbon particles by high-resolution TOF-SIMS Reviewed

    Norihito Mayama, Yusuke Miura, Kenji Ohishi, Tetsuo Sakamoto, Masaaki Fujii

    Technical Reports of the Meteorological Research Institute   68   57 - 58   2013.2

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  • IR super-resolution microspectroscopy and its application to single cells Reviewed

    Makoto Sakai, Keiichi Inoue, Masaaki Fujii

    Current Pharmaceutical Biotechnology   14 ( 2 )   159 - 166   2013

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    DOI: 10.2174/138920113805219430

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  • Laser desorption supersonic jet spectroscopy of octopamine by its hydrochloride salt Reviewed

    Shun-Ichi Ishiuchi, Hirokazu Sone, Masaaki Fujii

    Chemistry Letters   42 ( 10 )   1166 - 1167   2013

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    DOI: 10.1246/cl.130431

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  • Characterization of black carbon in fine aerosol particles using high lateral resolution TOF-SIMS Reviewed

    Norihito Mayama, Yusuke Miura, Kentaro Misawa, Akinori Takami, Tetsuo Sakamoto, Masaaki Fujii

    Analytical Sciences   29 ( 4 )   479 - 482   2013

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    DOI: 10.2116/analsci.29.479

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  • MODE-specific deactivation of adenine at the singlet excited states Reviewed

    Mitsuhiko Miyazaki, Hyuk Kang, Chang Min Choi, Noh Soo Han, Jae Kyu Song, Nam Joon Kim, Masaaki Fujii

    Journal of Chemical Physics   139 ( 12 )   124311-1 - 124311-5   2013

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    DOI: 10.1063/1.4821830

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  • Conformationally resolved spectra of acetaminophen by UV-UV hole burning and IR dip spectroscopy in the gas phase Reviewed

    Woon Yong Sohn, Shun-ichi Ishiuchi, Mitsuhiko Miyazaki, Jeongseok Kang, Soyoung Lee, Ahreum Min, Myong Yong Choi, Hyuk Kang, Masaaki Fujii

    PHYSICAL CHEMISTRY CHEMICAL PHYSICS   15 ( 3 )   957 - 964   2013

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    DOI: 10.1039/c2cp43552g

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  • IR spectroscopy of monohydrated tryptamine cation: Rearrangement of the intermolecular hydrogen bond induced by photoionization Reviewed

    Kenji Sakota, Yuuki Kouno, Satoshi Harada, Mitsuhiko Miyazaki, Masaaki Fujii, Hiroshi Sekiya

    JOURNAL OF CHEMICAL PHYSICS   137 ( 22 )   224311-1 - 224311-5   2012.12

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    DOI: 10.1063/1.4769878

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  • Ionization-Induced Solvent Migration in Acetanilide-Methanol Clusters Inferred from Isomer-Selective Infrared Spectroscopy Reviewed

    Martin Weiler, Takashi Nakamura, Hiroshi Sekiya, Otto Dopfer, Mitsuhiko Miyazaki, Masaaki Fujii

    CHEMPHYSCHEM   13 ( 17 )   3875 - 3881   2012.12

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    DOI: 10.1002/cphc.201200704

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  • IR Super-resolution Microscope Based on Vibrational Sum-frequency Generation and Its Application to Living Cells Reviewed

    SAKAI Makoto, FUJII Masaaki

    MEMBRANE   37 ( 4 )   200 - 205   2012.7

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    IR spectroscopy is powerful method to study structure of molecule based on vibrational spectrum. However, its application to microscope did not show large progresses so much. The largest difficulty is the lower resolution of IR microscope due to the longer wavelength of IR light, and it is limited at several μm. To overcome this limitation, we developed a novel IR microscope based on vibrational sum-frequency generation (VSFG). VSFG is a non-linear optical process and we irradiate visible and IR beams on the sample. If IR beam is resonant to vibrational mode of target molecule, VSFG signal photon whose frequency is equal to sum-frequency of the two pump beams will be strongly generated. Therefore, we can detect IR absorption of the molecule by monitoring VSFG and IR spectrum can be obtained by scanning IR wavelength. Because VSFG signal has visible wavelength, IR absorption can be imaged at the resolution of visible light (several 100 nm).

    DOI: 10.5360/membrane.37.200

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  • Absorption Spectra and Photochemical Reactions in a Unique Photoactive Protein, Middle Rhodopsin MR Reviewed

    Keiichi Inoue, Louisa Reissig, Makoto Sakai, Shiori Kobayashi, Michio Homma, Masaaki Fujii, Hideki Kandori, Yuki Sudo

    JOURNAL OF PHYSICAL CHEMISTRY B   116 ( 20 )   5888 - 5899   2012.5

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    DOI: 10.1021/jp302357m

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  • Gas phase IR spectra of tri-peptide Z-Pro-Leu-Gly: Effect of C-terminal amide capping on secondary structure Reviewed

    Shamik Chakraborty, Kohei Yamada, Shun-ichi Ishiuchi, Masaaki Fujii

    CHEMICAL PHYSICS LETTERS   531   41 - 45   2012.4

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    DOI: 10.1016/j.cplett.2012.01.086

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  • A two-color tunable infrared/vacuum ultraviolet spectrometer for high-resolution spectroscopy of molecules in molecular beams Reviewed

    Jonathan R. Woodward, Hirokazu Watanabe, Shun-Ichi Ishiuchi, Masaaki Fujii

    REVIEW OF SCIENTIFIC INSTRUMENTS   83 ( 1 )   014102-1 - 014102-9   2012.1

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    DOI: 10.1063/1.3673639

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  • Development of source apportionment of individual particle by high resolution time of flight-secondary ion mass spectrometry Reviewed

    Norihito Mayama, Eita Goto, Yusuke Miura, Kenji Ohishi, Tetsuo Sakamoto, Akinori Takami, Shiro Hatakeyama, Hiroshi Bandow, Kentaro Murano, Masaaki Fujii

    Journal of the Vacuum Society of Japan   55 ( 3 )   104 - 107   2012

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    DOI: 10.3131/jvsj2.55.104

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  • Watching Water Migration around a Peptide Bond Reviewed

    Kohei Tanabe, Mitsuhiko Miyazaki, Matthias Schmies, Alexander Patzer, Markus Schuetz, Hiroshi Sekiya, Makoto Sakai, Otto Dopfer, Masaaki Fujii

    ANGEWANDTE CHEMIE-INTERNATIONAL EDITION   51 ( 27 )   6604 - 6607   2012

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    DOI: 10.1002/anie.201203296

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  • Ionisation-induced site switching dynamics in solvated aromatic clusters: phenol-(rare gas)(n) clusters as prototypical example Reviewed

    Masaaki Fujii, Otto Dopfer

    INTERNATIONAL REVIEWS IN PHYSICAL CHEMISTRY   31 ( 1 )   131 - 173   2012

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    DOI: 10.1080/0144235X.2012.656013

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  • Gas-phase Infrared Spectroscopy of Monopeptides from 10 to 3 mu m Reviewed

    Mitsuhiko Miyazaki, Koji Makara, Shun-ichi Ishiuchi, Masaaki Fujii

    CHEMISTRY LETTERS   40 ( 10 )   1157 - 1158   2011.10

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    DOI: 10.1246/cl.2011.1157

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  • Gas-Phase Spectroscopy of Synephrine by Laser Desorption Supersonic Jet Technique Reviewed

    Shun-ichi Ishiuchi, Toshiro Asakawa, Haruhiko Mitsuda, Mitsuhiko Miyazaki, Shamik Chakraborty, Masaaki Fujii

    JOURNAL OF PHYSICAL CHEMISTRY A   115 ( 37 )   10363 - 10369   2011.9

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    DOI: 10.1021/jp205267c

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  • Isomerization reaction in high-n Rydberg states of phenol-Ar/Kr clusters measured by autoionization detected infrared spectroscopy Reviewed

    Mitsuhiko Miyazaki, Shinya Tanaka, Shun-ichi Ishiuchi, Otto Dopfer, Masaaki Fujii

    CHEMICAL PHYSICS LETTERS   513 ( 4-6 )   208 - 211   2011.9

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    DOI: 10.1016/j.cplett.2011.08.001

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  • Hole-Burning Spectra of m-Fluorophenol/Ammonia (1:3) Clusters and Their Excited State Hydrogen Transfer Dynamics Reviewed

    Norihiro Tsuji, Shun-ichi Ishiuchi, Christophe Jouvet, Claude Dedonder-Lardeux, Mitsuhiko Miyazaki, Makoto Sakai, Masaaki Fujii

    CHEMPHYSCHEM   12 ( 10 )   1928 - 1934   2011.7

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    DOI: 10.1002/cphc.201100102

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  • 収束イオンビームとレーザーイオン化法を用いた環境汚染微粒子の履歴解析 Reviewed

    藤井 正明, 坂本 哲夫

    光学   40 ( 5 )   232 - 234   2011.5

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  • Advanced mid-infrared tunable laser and its application to novel spectraoscopy

    FUJII Masaaki, MIYAZAKI Mitsuhiko, SAIKAWA Jiro, ISHIZUKI Hideki, TAIRA Takunori

    電気学会光・量子デバイス研究会資料   2011 ( 18 )   7 - 8   2011.3

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  • Mass analyzed threshold ionization spectra of phenol center dot center dot center dot Ar-2: ionization energy and cation intermolecular vibrational frequencies Reviewed

    Antonio Armentano, Xin Tong, Mikko Riese, Simon M. Pimblott, K. Mueller-Dethlefs, Masaaki Fujii, Otto Dopfer

    PHYSICAL CHEMISTRY CHEMICAL PHYSICS   13 ( 13 )   6071 - 6076   2011

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    DOI: 10.1039/c004497k

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  • Structures and IR/UV spectra of neutral and ionic phenol-Ar-n cluster isomers (n &lt;= 4): competition between hydrogen bonding and stacking Reviewed

    Matthias Schmies, Alexander Patzer, Masaaki Fujii, Otto Dopfer

    PHYSICAL CHEMISTRY CHEMICAL PHYSICS   13 ( 31 )   13926 - 13941   2011

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    DOI: 10.1039/c1cp20676a

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  • Isomer selective IR-UV depletion spectroscopy of 4-fluorotoluene-NH3: evidence for pi-proton-acceptor and linear hydrogen-bonded complexes Reviewed

    Martin C. R. Cockett, Mitsuhiko Miyazaki, Kohei Tanabe, Masaaki Fujii

    PHYSICAL CHEMISTRY CHEMICAL PHYSICS   13 ( 34 )   15633 - 15638   2011

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    DOI: 10.1039/c1cp21545k

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  • Conformational reduction of DOPA in the gas phase studied by laser desorption supersonic jet laser spectroscopy Reviewed

    Shun-ichi Ishiuchi, Haruhiko Mitsuda, Toshiro Asakawa, Mitsuhiko Miyazaki, Masaaki Fujii

    PHYSICAL CHEMISTRY CHEMICAL PHYSICS   13 ( 17 )   7812 - 7820   2011

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    DOI: 10.1039/c0cp02695f

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  • Development of Low Reflectivity and High Resolution Negative-tone Photoresist Reviewed

    Dai Shiota, Yoshinori Tadokoro, Kunihiro Noda, Masaru Shida, Masaaki Fujii

    JOURNAL OF PHOTOPOLYMER SCIENCE AND TECHNOLOGY   24 ( 4 )   397 - 400   2011

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    DOI: 10.2494/photopolymer.24.397

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  • Photopolymerization Analysis by Isomerization for Oxime Derivatives Reviewed

    Dai Shiota, Yoshinori Tadokoro, Kunihiro Noda, Masaru Shida, Masaaki Fujii

    JOURNAL OF PHOTOPOLYMER SCIENCE AND TECHNOLOGY   24 ( 6 )   625 - 629   2011

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    DOI: 10.2494/photopolymer.24.625

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  • Ionization-induced pi -&gt; H site switching dynamics in phenol-Ar-3 Reviewed

    Shun-ichi Ishiuchi, Mitsuhiko Miyazaki, Makoto Sakai, Masaaki Fujii, Matthias Schmies, Otto Dopfer

    PHYSICAL CHEMISTRY CHEMICAL PHYSICS   13 ( 6 )   2409 - 2416   2011

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    DOI: 10.1039/c0cp01926g

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  • Photoionization-induced large-amplitude pendular motion in phenol(+)-Kr Reviewed

    Mitsuhiko Miyazaki, Akihiro Takeda, Shun-ichi Ishiuchi, Makoto Sakai, Otto Dopfer, Masaaki Fujii

    PHYSICAL CHEMISTRY CHEMICAL PHYSICS   13 ( 7 )   2744 - 2747   2011

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    DOI: 10.1039/c0cp01961e

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  • 2N1448 Development of an IR Super-resolution Microscope Visualizing the 6 μm Mid-IR region and its Application to Biological Samples(Bioimaging 2,The 48th Annual Meeting of the Biophysical Society of Japan)

    Kikuchi Katsuya, Kitatsugu Kana, Tajima Tomoki, Fujii Masaaki, Sakai Makoto

    Seibutsu Butsuri   51   S100   2011

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    DOI: 10.2142/biophys.51.S100_1

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  • Detailed analysis of diesel vehicle exhaust emissions: Nitrogen oxides, hydrocarbons and particulate size distributions Reviewed

    Hiroyuki Yamada, Kentaro Misawa, Daisuke Suzuki, Koichi Tanaka, Jun Matsumoto, Masaaki Fujii, Kotaro Tanaka

    PROCEEDINGS OF THE COMBUSTION INSTITUTE   33 ( 2 )   2895 - 2902   2011

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    DOI: 10.1016/j.proci.2010.07.001

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  • 2波長レーザー分光法を用いた赤外超解像イメージ測定法 Reviewed

    井上 圭一, 藤井 正明, 酒井 誠

    分光研究   59 ( 5 )   233 - 234   2010.10

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  • Tribute to Klaus Muller-Dethlefs Reviewed

    Daniel Neumark, Masaaki Fujii, Michael Duncan

    JOURNAL OF PHYSICAL CHEMISTRY A   114 ( 42 )   11027 - 11027   2010.10

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    DOI: 10.1021/jp106204d

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  • レーザーイオン化/収束イオンビームによる単一ナノ粒子の履歴解析装置 Reviewed

    坂本 哲夫, 藤井 正明

    化学と工業   63 ( 10 )   802 - 803   2010.10

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  • Dissociation energetics of the phenol(+)center dot center dot center dot Ar-2 cluster ion: The role of pi -&gt; H isomerization Reviewed

    Xin Tong, Antonio Armentano, Mikko Riese, Med BenYezzar, Simon M. Pimblott, Klaus Mueller-Dethlefs, Shun-ichi Ishiuchi, Makoto Sakai, Akihiro Takeda, Masaaki Fujii, Otto Dopfer

    JOURNAL OF CHEMICAL PHYSICS   133 ( 15 )   154308-1 - 154308-5   2010.10

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    DOI: 10.1063/1.3482733

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  • Fragmentation Energetics of the Phenol(+)center dot center dot center dot Ar-3 Cation Cluster Reviewed

    Antonio Armentano, Mikko Riese, Mehran Taherkhani, Med Ben Yezzar, Klaus Mueller-Dethlefs, Masaaki Fujii, Otto Dopfer

    JOURNAL OF PHYSICAL CHEMISTRY A   114 ( 42 )   11139 - 11143   2010.10

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    DOI: 10.1021/jp102491b

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  • Excited-State Triple-Proton Transfer in 7-Azaindole(H2O)(2) and Reaction Path Studied by Electronic Spectroscopy in the Gas Phase and Quantum Chemical Calculations Reviewed

    Kenji Sakota, Christophe Jouvet, Claude Dedonder, Masaaki Fujii, Hiroshi Sekiya

    JOURNAL OF PHYSICAL CHEMISTRY A   114 ( 42 )   11161 - 11166   2010.10

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    DOI: 10.1021/jp102733c

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  • Structural Evolution of (1-NpOH)(n) Clusters Studied by R2PI and IR Dip Spectroscopies Reviewed

    Morihisa Saeki, Shun-ichi Ishiuchi, Makoto Sakai, Kenro Hashimoto, Masaaki Fujii

    JOURNAL OF PHYSICAL CHEMISTRY A   114 ( 42 )   11210 - 11215   2010.10

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    DOI: 10.1021/jp102849q

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  • Excited state hydrogen transfer dynamics in substituted phenols and their complexes with ammonia: pi pi*-pi sigma* energy gap propensity and ortho-substitution effect Reviewed

    G. A. Pino, A. N. Oldani, E. Marceca, M. Fujii, S. -I. Ishiuchi, M. Miyazaki, M. Broquier, C. Dedonder, C. Jouvet

    JOURNAL OF CHEMICAL PHYSICS   133 ( 12 )   124313-1 - 124313-12   2010.9

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  • Real-time monitoring of individual pollutants and evaluation of OH reactivity in exhaust gas of a mode-driving vehicle utilizing the laser multi-photon ionization technique

    MATSUMOTO Jun, MISAWA Kentaro, ISHIUCHI Shun-ichi, FUJII Masaaki, HAYASHI Shun-ichi, TANAKA Kotaro, YAMADA Hiroyuki, GOTO Yuichi

    Journal of Japan Society for Atmospheric Environment   45 ( 5 )   205 - 211   2010.8

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  • Dual Emission Caused by Ring Inversion Isomerization of a 4-Methyl-2-pyridyl-pyrimidine Copper(I) Complex Reviewed

    Michihiro Nishikawa, Kuniharu Nomoto, Shoko Kume, Keiichi Inoue, Makoto Sakai, Masaaki Fujii, Hiroshi Nishihara

    JOURNAL OF THE AMERICAN CHEMICAL SOCIETY   132 ( 28 )   9579 - 9581   2010.7

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    DOI: 10.1021/ja103718e

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  • Infrared imaging of an A549 cultured cell by a vibrational sum-frequency generation detected infrared super-resolution microscope Reviewed

    Satoshi Kogure, Keiichi Inoue, Tsutomu Ohmori, Miya Ishihara, Makoto Kikuchi, Masaaki Fujii, Makoto Sakai

    OPTICS EXPRESS   18 ( 13 )   13402 - 13406   2010.6

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    DOI: 10.1364/OE.18.013402

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  • Evidence for Catechol Ring- Induced Conformational Restriction in Neurotransmitters Reviewed

    Haruhiko Mitsuda, Mitsuhiko Miyazaki, Iben B. Nielsen, Pierre Carcabal, Claude Dedonder, Christophe Jouvet, Shun-ichi Ishiuchi, Masaaki Fujii

    JOURNAL OF PHYSICAL CHEMISTRY LETTERS   1 ( 7 )   1130 - 1133   2010.4

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    DOI: 10.1021/jz100186h

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  • Development of a Non-scanning Vibrational Sum-Frequency Generation Detected Infrared Super-Resolution Microscope and Its Application to Biological Cells Reviewed

    Keiichi Inoue, Masaaki Fujii, Makoto Sakai

    APPLIED SPECTROSCOPY   64 ( 3 )   275 - 281   2010.3

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  • Visible-super-resolution infrared microscopy using saturated transient fluorescence detected infrared spectroscopy Reviewed

    Nandor Bokor, Keiichi Inoue, Satoshi Kogure, Masaaki Fujii, Makoto Sakai

    OPTICS COMMUNICATIONS   283 ( 3 )   509 - 514   2010.2

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    DOI: 10.1016/j.optcom.2009.10.032

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  • Spectroscopic Studies of a Sensory Rhodopsin I Homologue from the Archaeon Haloarcula vallismortis Reviewed

    Jin Yagasaki, Daisuke Suzuki, Kunio Ihara, Keiichi Inoue, Takashi Kikukawa, Makoto Sakai, Masaaki Fujii, Michio Homma, Hideki Kandori, Yuki Sudo

    BIOCHEMISTRY   49 ( 6 )   1183 - 1190   2010.2

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    DOI: 10.1021/bi901824a

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  • Effects of Chloride Ion Binding on the Photochemical Properties of Salinibacter Sensory Rhodopsin I (vol 392, pg 48, 2009) Reviewed

    Daisuke Suzuki, Yuji Furutani, Keiichi Inoue, Takashi Kikukawa, Makoto Sakai, Masaaki Fujii, Hideki Kandori, Michio Homma, Yuki Sudo

    JOURNAL OF MOLECULAR BIOLOGY   395 ( 1 )   220 - 221   2010.1

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    DOI: 10.1016/j.jmb.2009.10.046

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  • Measurement of adiabatic ionization energies of the rotational isomers of n-propylbenzene and m-fluorophenol by direct VUV laser photoionization Reviewed

    Hirokazu Watanabe, Shun-Ichi Ishiuchi, Kentaro Misawa, Mitsuhiko Miyazaki, Jonathan R. Woodward, Masaaki Fujii

    CHEMICAL PHYSICS LETTERS   485 ( 1-3 )   31 - 35   2010.1

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    DOI: 10.1016/j.cplett.2009.12.023

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  • Simultaneous measurements of aromatic hydrocarbons in exhaust using a laser ionization method Reviewed

    Hiroyuki Yamada, Kentaro Misawa, Masaaki Fujii, Koichi Tanaka, Daisuke Suzuki, Jun Matsumoto, Kotaro Tanaka

    SAE International Journal of Engines   2 ( 2 )   226 - 234   2010

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    DOI: 10.4271/2009-01-2742

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  • Time-resolved measurements of low concentration aromatic hydrocarbons in diesel exhaust using a resonance enhanced multi-photon ionization method Reviewed

    K. Misawa, K. Tanaka, H. Yamada, Y. Goto, J. Matsumoto, Y. Yamato, S. Ishiuchi, M. Fujii, K. Tanaka, K. Endo, S. Hayashi

    INTERNATIONAL JOURNAL OF ENGINE RESEARCH   10 ( 6 )   409 - 417   2009.12

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    DOI: 10.1243/14680874JER03909

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  • Super-Resolution Infrared Microspectroscopy for Single Cells Reviewed

    Makoto Sakai, Keiichi Inoue, Masaaki Fujii

    Molecular Nano Dynamics: Vol. I: Spectroscopic Methods and Nanostructures / Vol. II: Active Surfaces, Single Crystals and Single Biocells   2   571 - 588   2009.11

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    DOI: 10.1002/9783527627820.ch29

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  • Preface to Special Issue on Novel Laser Method to Clarify of Biomolecular Functional Systems

    FUJII Masaaki

    rle   37 ( 10 )   728 - 728   2009.10

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    DOI: 10.2184/lsj.37.728

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  • Characterization of a Signaling Complex Composed of Sensory Rhodopsin I and Its Cognate Transducer Protein from the Eubacterium Salinibacter ruber Reviewed

    Yuki Sudo, Akiko Okada, Daisuke Suzuki, Keiichi Inoue, Hiroki Irieda, Makoto Sakai, Masaaki Fujii, Yuji Furutani, Hideki Kandori, Michio Homma

    BIOCHEMISTRY   48 ( 42 )   10136 - 10145   2009.10

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    DOI: 10.1021/bi901338d

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  • 細胞内部可視化を目指した赤外超解像顕微分光法の開発 Reviewed

    酒井 誠, 井上 圭一, 藤井 正明

    レーザー研究   37 ( 10 )   729 - 733   2009.10

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  • レーザーイオン化 法による自動車排出ガスのリアルタイム質量分析(第1報) ―多成分同時分析装置の開発― // Real-time Mass Spectrometry of Exhaust Gas from Automobiles Utilizing Laser Ionization (First Report) ―Development of Simultaneous Analyzer of Multicomponents― Reviewed

    三澤 健太郎, 田中 光太郎, 田中 康一, 松本 淳, 石内 俊一, 齊川 次郎, 林 俊一, 藤井 正明, 柏木 隆宏, 中川 潤, 遠藤 克己, 渡辺 敬太郎, 山田 裕之, 後藤 雄一, Kentaro Misawa, Kotaro Tanaka, Koichi Tanaka, Jun Matsumoto, Shun-ichi Ishiuchi, Jiro Saikawa, Shun-ichi Hayashi, Masaaki Fujii, Takahiro Kashiwagi, Jun Nakagawa, Katsumi Endo, Keitaro Watanabe, Hiroyuki Yamada, Yuichi Goto

    自動車技術会論文集   40 ( 5 )   1333 - 1338   2009.9

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  • レーザーイオン化法による自動車排出ガスのリアルタイム質量分析(第2報) ―モード走行時の排出傾向― // Real-time Mass Spectrometry of Exhaust Gas from Automobiles Utilizing Laser Ionization (Second Report) ―Emission Trends in Driving Mode― Reviewed

    田中 光太郎, 三澤 健太郎, 田中 康一, 松本 淳, 石内 俊一, 齊川 次郎, 藤井 正明, 林 俊一, 柏木 隆宏, 中川 潤, 遠藤 克己, 渡辺 敬太郎, 山田 裕之, 後藤 雄一, Kotaro Tanaka, Kentaro Misawa, Koichi Tanaka, Jun Matsumoto, Shun-ichi Ishiuchi, Jiro Saikawa, Masaaki Fujii, Shun-ichi Hayashi, Takahiro Kashiwagi, Jun Nakagawa, Katsumi Endo, Keitaro Watanabe, Hiroyuki Yamada, Yuichi Goto

    自動車技術会論文集   40 ( 5 )   1339 - 1344   2009.9

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  • Effects of Chloride Ion Binding on the Photochemical Properties of Salinibacter Sensory Rhodopsin I Reviewed

    Daisuke Suzuki, Yuji Furutan, Keiichi Inoue, Takashi Kikukawa, Makoto Sakai, Masaaki Fujii, Hideki Kandori, Michio Homma, Yuki Sudo

    JOURNAL OF MOLECULAR BIOLOGY   392 ( 1 )   48 - 62   2009.9

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    DOI: 10.1016/j.jmb.2009.06.050

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  • Two-point-separation in a sub-micron nonscanning IR super-resolution microscope based on transient fluorescence detected IR spectroscopy Reviewed

    Keiichi Inoue, Nandor Bokor, Satoshi Kogure, Masaaki Fujii, Makoto Sakai

    OPTICS EXPRESS   17 ( 14 )   12013 - 12018   2009.7

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    DOI: 10.1364/OE.17.012013

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  • 過渡蛍光検出赤外分光による超解像イメージング Reviewed

    酒井 誠, 井上 圭一, 藤井 正明

    光学   38 ( 7 )   344 - 349   2009.7

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  • IR spectra of resorcinol(+)-Ar-n cluster cations (n=1, 2): Evidence for photoionization-induced pi -&gt; H isomerization Reviewed

    Alexander Patzer, Judith Langer, Harald Knorke, Helge Neitsch, Otto Dopfer, Mitsuhiko Miyazaki, Kaori Hattori, Akihiro Takeda, Shun-ichi Ishiuchi, Masaaki Fujii

    CHEMICAL PHYSICS LETTERS   474 ( 1-3 )   7 - 12   2009.5

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    DOI: 10.1016/j.cplett.2009.04.030

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  • Development of A High-Energy, Broadly Tunable and Narrow Band-Width Mid-Infrared Light Source and Its Application to Infrared-Ultraviolet Double Resonance Spectroscopy Reviewed

    MIYAZAKI Mitsuhiko, SAIKAWA Jiro, FUJII Masaaki, ISHIZUKI Hideki, TAIRA Takunori

    The Review of Laser Engineering   37 ( 4 )   296 - 303   2009.4

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    We developed a high-energy, broadly tunable and narrow band-width mid-infrared light source with a

    DOI: 10.2184/lsj.37.296

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  • Infrared Super-Resolution Imaging of a Single A549 Cell by Fluorescence Detection Reviewed

    OHMORI Tsutomu, INOUE Keiichi, SAKAI Makoto, FUJII Masaaki, ISHIHARA Miya, KIKUCHI Makoto

    JJSLSM   30 ( 4 )   427 - 434   2009.4

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    2-color infrared (IR) super-resolution microscopy enables us to detect IR absorption with resolution of less than 1 μm, which is equivalent to that of fluorescence microscope. To prove that this microscopy can be utilized as cell analysis, we attempted to detect IR absorption inside A549 cells at IR wavelength of about 3 μm. When stained, we achieved to detect the IR absorption of protein molecules bound to fluorescent molecules. When non-stained, we achieved to detect the IR absorption of flavin molecules using auto-fluorescence. The microscopy is applicable to biochemical analysis inside cells based on molecular structure and thereby e.g. to cell selection.

    DOI: 10.2530/jslsm.30.427

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  • Two-point-separation in a Sub-micron Nonscanning IR Super-resolution Microscope Based on Transient Fluorescence Detected IR Spectroscopy Reviewed

    Keiichi Inoue, Nándor Bokor, Satoshi Kogure, Masaaki Fujii, Makoto Sakai

    Virtual Journal for Biomedical Optics   4 ( 9 )   2009.4

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  • The development of the infrared super-resolution microscope to observe the cell with a molecular level

    SAKAI Makoto, INOUE Keiichi, FUJII Masaaki

    2009 ( 1 )   19 - 23   2009.2

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  • In Situ, Fast-response, Molecular-selective Methods for Measuring Emission Factors of Volatile Organic Compounds (VOCs) into the Atmosphere Reviewed

    Jun Matsumoto, Kentaro Misawa, Shun-ichi Ishiuchi, Masaaki Fujii

    CHEMISTRY LETTERS   38 ( 1 )   74 - 75   2009.1

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    DOI: 10.1246/cl.2009.74

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  • Isomer selective infrared spectroscopy of supersonically cooled cis- and trans-N-phenylamides in the region from the amide band to NH stretching vibration Reviewed

    Mitsuhiko Miyazaki, Jiro Saikawa, Hideki Ishizuki, Takunori Taira, Masaaki Fujii

    PHYSICAL CHEMISTRY CHEMICAL PHYSICS   11 ( 29 )   6098 - 6106   2009

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    DOI: 10.1039/b822310f

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  • 自家蛍光を用いた2波長赤外超解像顕微鏡法による単一細胞赤外イメージング

    大森努, 井上圭一, 酒井誠, 藤井正明, 石原美弥, 菊地眞

    第48回日本生体医工学会大会プログラム・論文集(CD-ROM)   87 - 87   2009

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  • Functional imaging of a single cell: Far-field infrared superresolution microscopy using auto-fluorescence detection Reviewed

    Tsutomu Ohmori, Keiichi Inoue, Makoto Sakai, Masaaki Fujii, Miya Ishihara, Makoto Kikuchi

    Progress in Biomedical Optics and Imaging - Proceedings of SPIE   7182   2009

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    DOI: 10.1117/12.808903

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  • Functional Imaging of a Single Cell: Far-field Infrared Super-resolution Microscopy Using Auto-fluorescence Detection Reviewed

    Tsutomu Ohmori, Keiichi Inoue, Makoto Sakai, Masaaki Fujii, Miya Ishihara, Makoto Kikuchi

    IMAGING, MANIPULATION, AND ANALYSIS OF BIOMOLECULES, CELLS, AND TISSUES VII   7182 ( 71820G )   1 - 6   2009

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    DOI: 10.1117/12.808903

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  • Simultaneous measurements of the components of VOCs and PAHs in diesel exhaust gas using a laser ionization method Reviewed

    Kotaro Tanaka, Keitaro Watanabe, Hiroyuki Yamada, Yuichi Goto, Kentaro Misawa, Jun Matsumoto, Shunichi Ishiuchi, Masaaki Fujii, Koichi Tanaka, Jun Nakagawa, Katsumi Endo, Shunichi Hayashi

    SAE Technical Papers   2009-01-1842   2009

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    DOI: 10.4271/2009-01-1842

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  • Real-time analysis of benzene in exhaust gas from driving automobiles using Jet-REMPI method Reviewed

    Kentaro Misawa, Shun-Ichi Ishiuchi, Masaaki Fujii, Jun Matsumoto, Koichi Tanaka, Jun Nakagawa, Katsumi Endo, Shun-Ichi Hayashi, Kotaro Tanaka, Hiroyuki Yamada, Yuichi Goto

    SAE Technical Papers   2009-01-2740   2009

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    DOI: 10.4271/2009-01-2740

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  • Plugging a Molecular Wire into Photosystem I: Reconstitution of the Photoelectric Conversion System on a Gold Electrode Reviewed

    Nao Terasaki, Noritaka Yamamoto, Takashi Hiraga, Yoshinori Yamanoi, Tetsu Yonezawa, Hiroshi Nishihara, Tsutomu Ohmori, Makoto Sakai, Masaaki Fujii, Akihiko Tohri, Masako Iwai, Yasunori Inoue, Satoshi Yoneyama, Makoto Minakata, Isao Enami

    ANGEWANDTE CHEMIE-INTERNATIONAL EDITION   48 ( 9 )   1585 - 1587   2009

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    DOI: 10.1002/anie.200805748

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  • Resonance-enhanced Multiphoton Ionization Spectroscopy of the S-1-S-0 Transition of Benzo[e]pyrene for Real-time Analysis Reviewed

    Kentaro Misawa, Jun Matsumoto, Norihiro Tsuji, Yoichi Matsuzaki, Shun-ichi Hayashi, Masaaki Fujii

    CHEMISTRY LETTERS   37 ( 12 )   1280 - 1281   2008.12

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    DOI: 10.1246/cl.2008.1280

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  • Vibrational Signature of the Conformers in Tyramine Studied by IR Dip and Dispersed Fluorescence Spectroscopies Reviewed

    Koji Makara, Kentaro Misawa, Mitsuhiko Miyazaki, Haruhiko Mitsuda, Shun-ichi Ishiuchi, Masaaki Fujii

    JOURNAL OF PHYSICAL CHEMISTRY A   112 ( 51 )   13463 - 13469   2008.12

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    DOI: 10.1021/jp806232x

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  • The most stable conformer of benzyl alcohol Reviewed

    Benjamin J. Miller, Henrik G. Kjaergaard, Kaori Hattori, Shun-ichi Ishiuchi, Masaaki Fujii

    CHEMICAL PHYSICS LETTERS   466 ( 1-3 )   21 - 26   2008.11

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    DOI: 10.1016/j.cplett.2008.10.028

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  • Electronic spectra of 7-azaindole/ammonia clusters and their photochemical reactivity Reviewed

    Yuna Koizumi, Christophe Jouvet, Tsuji Norihiro, Shun-ichi Ishiuchi, Claude Dedonder-Lardeux, Masaaki Fujii

    JOURNAL OF CHEMICAL PHYSICS   129 ( 10 )   104311-1 - 104311-10   2008.9

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    DOI: 10.1063/1.2970936

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  • 2波長レーザー分光に基づく超解像光学顕微鏡の開発 Reviewed

    藤井 正明

    Japan Intense Light Field Science Society (JILS) Newsletter   44   1 - 18   2008.8

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  • High-energy, broadly tunable, narrow-bandwidth mid-infrared optical parametric system pumped by quasi-phase-matched devices Reviewed

    Jiro Saikawa, Mitsuhiko Miyazaki, Masaaki Fujii, Hideki Ishizuki, Takunori Taira

    OPTICS LETTERS   33 ( 15 )   1699 - 1701   2008.8

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    DOI: 10.1364/OL.33.001699

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  • Development of Supercritical Fluid Jet Spectroscopy and Its Application for Spectroscopy of Supra Functional Systems Reviewed

    ISHIUCHI Shun-ichi, Fujii Masaaki

    Bunko Kenkyu   57 ( 4 )   158 - 167   2008.8

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    We developed a supercritical fluid jet technique, which enables the vaporization and the jet-cooling of non-vola-tile molecules by supersonic expansion of their supercritical solutions to vacuum directly. For its purpose, a new high-pressure pulsed valve was developed. By using this pulsed valve, we could introduce the high-pressure fluid. over 25MPa into vacuum as a short gaseous pulse, and confirmed that we can obtain an enough jet-cooling condi-tion. In this review, we will introduce a detail of the high-pressure pulsed valve and its application for the super-critical fluid jet spectroscopy.

    DOI: 10.5111/bunkou.57.158

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  • 光の研究コミュニティ-技術進展を支える光関連研究会/グループ ―第60回(社)日本分光学会 生細胞分光部会 Reviewed

    藤井 正明

    OPTRONICS   27 ( 320 )   144 - 145   2008.8

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  • Demonstration of super-resolution microscopy using a high numerical-aperture oil-immersion objective lens Reviewed

    Yoshinori Iketaki, Takeshi Watanabe, Nándor Bokor, Masaaki Fujii

    e-Journal of Surface Science and Nanotechnology   6   175 - 179   2008.7

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    DOI: 10.1380/ejssnt.2008.175

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  • Compact fluorescence depletion microscope system using an integrated optical element Reviewed

    Nandor Bokor, Yoshinori Iketaki, Takeshi Watanabe, Masaaki Fujii

    OPTICS COMMUNICATIONS   281 ( 7 )   1850 - 1854   2008.4

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    DOI: 10.1016/j.optcom.2007.05.069

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  • 基礎研究者がする応用研究 Reviewed

    藤井 正明

    Molecular Science   2 ( A0026 )   A0026   2008.4

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    Resonant enhanced multiphoton ionization spectroscopy with a supersonic jet is an established method for molecular science. This familiar tool has an another possibility for chemical analysis by its resonant effect; real-time, highly sensitive analysis without pretreatment. The real-time chemical analysis is demonstrated for benzene in the automobile exhaust gas. Further extension to the history analyzer for a single suspended particulate matter is also introduced briefly.

    DOI: 10.3175/molsci.2.A0026

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  • Development of high sensitive on-line laser ionization mass spectrometer for environmental hazardous organic compounds Reviewed

    Shun-ichi Fiayashi, Tetsuya Suzuki, Shun-ichi Ishiuchi, Masaaki Fujii

    BUNSEKI KAGAKU   57 ( 4 )   227 - 237   2008.4

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  • 超高感度レーザー分析の最前線=分子選択的リアルタイム高感度分析= Reviewed

    三澤 健太郎, 松本 淳, 石内 俊一, 藤井 正明, 林 俊一

    光アライアンス   19 ( 3 )   48 - 52   2008.3

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  • 2波長超解像光学顕微鏡 Reviewed

    藤井 正明

    化学と工業   61 ( 2 )   115 - 118   2008.2

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  • Construction of super-resolution optical microscope by using 2-color laser spectroscopy Reviewed

    Function & materials   28 ( 2 )   22 - 27   2008.2

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  • 共鳴多光子イオン化法を用いた排出ガス中の微量成分の前処理なしリアルタイム分析(2) ―モード走行時の排出量変動― // Real-time and Direct Analysis of Pollutants in Exhaust Gas Utilizing Resonance Enhanced multi-photon ionization (2) ―Variations of Emissions Under Test Driving Modes― Reviewed

    Kentaro Misawa, Jun Matsumoto, Yohei Yamato, Saori Mae, Shun-ichi Ishiuchi, Masaaki Fujii, Koichi Tanaka, Tetsuya Suzuki, Shun-ichi Hayashi, Hiroyuki Yamada, Yuichi Goto

    Review of Automotive Engineering   29 ( 1 )   123 - 125   2008.1

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  • 共鳴多光子イオン化法を用いた排出ガス中の微量成分の前処理なしリアルタイム分析(1) ―実ガス定量システムの確立― // Real-time and Direct Analysis of Pollutants in Exhaust Gas Utilizing Resonance Enhanced multi-photon ionization (1) ―Monitoring System for Realgas Sample― Reviewed

    Jun Matsumoto, Kentaro Misawa, Yohei Yamato, Saori Mae, Shun-ichi Ishiuchi, Masaaki Fujii, Koichi Tanaka, Tetsuya Suzuki, Shun-ichi Hayashi, Hiroyuki Yamada, Yuichi Goto

    Review of Automotive Engineering   29 ( 1 )   119 - 121   2008.1

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  • Synthesis of Pd complexes directly linked to the light-absorbing [(bpy)(3)Ru](2+) unit and their photochemical reactions toward styrenes Reviewed

    Akiko Inagaki, Hiroki Nakagawa, Munetaka Akita, Keiichi Inoue, Makoto Sakai, Masaaki Fujii

    DALTON TRANSACTIONS   2008 ( 47 )   6709 - 6723   2008

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    DOI: 10.1039/b809020c

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  • 3P-330 IR super-resolution imaging of non-stained cells by 2-color laser spectroscopic technique(The 46th Annual Meeting of the Biophysical Society of Japan)

    Inoue Keiichi, Uehara Ken, Kogure Satoshi, Ohmori Tsutomu, Ishihara Miya, Kikuchi Makoto, Fujii Masaaki, Sakai Makoto

    Seibutsu Butsuri   48   S178   2008

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    DOI: 10.2142/biophys.48.S178_5

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  • Cell imaging by transient fluorescence detected infrared microscopy Reviewed

    Tsutomu Ohmori, Makoto Sakai, Miya Ishihara, Makoto Kikuchi, Masaaki Fujii

    Progress in Biomedical Optics and Imaging - Proceedings of SPIE   6853   2008

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    DOI: 10.1117/12.762980

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  • Time-resolved measurements of aromatic hydrocarbon in exhaust gas using resonance enhanced multi-photon ionization method

    Kotaro Suzaki, Hiroyuki Yamada, Yuichi Goto, Kentaro Misawa, Jun Matsumoto, Yohei Yamato, Shunichi Ishiuchi, Masaaki Fujii, Koichi Tanaka, Katsumi Endo, Shunichi Hayashi

    Proceedings of the 7th International Conference on Modeling and Diagnostics for Advanced Engine Systems, COMODIA 2008   725 - 730   2008

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  • Cell imaging by transient fluorescence detected infrared microscopy Reviewed

    Tsutomu Ohmori, Makoto Sakai, Miya Ishihara, Makoto Kikuchi, Masaaki Fujii

    BIOMEDICAL OPTICAL SPECTROSCOPY   6853 ( 685307 )   1 - 7   2008

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    DOI: 10.1117/12.762980

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  • Tunable, narrow-bandwidth Mid-IR generation in ZnGeP<inf>2</inf> crystals pumped by a large aperture periodically poled Mg doped LiNbO<inf>3</inf> optical parametric system Reviewed

    J. Saikawa, M. Miyazaki, M. Fujii, H. Ishizuki, T. Taira

    Advanced Solid-State Photonics, ASSP 2008   2008

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  • Development of high sensitive on-line laser ionization mass spectrometer for environmental hazardous organic compounds Reviewed

    Shun-Ichi Hayashi, Tetsuya Suzuki, Shun-Ichi Ishiuchi, Masaaki Fujii

    Bunseki Kagaku   57 ( 4 )   227 - 237   2008

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    DOI: 10.2116/bunsekikagaku.57.227

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  • Narrow-bandwidth Mid-IR generation based on a large aperture periodically poled Mg-doped LiNbO3 optical parametric pump system Reviewed

    J. Saikawa, M. Miyazaki, M. Fujii, H. Ishizuki, T. Taira

    2008 CONFERENCE ON LASERS AND ELECTRO-OPTICS & QUANTUM ELECTRONICS AND LASER SCIENCE CONFERENCE, VOLS 1-9   1483 - +   2008

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  • Real-time and direct measurement of pollutants in exhaust gas utilizing supersonic jet/resonance enhanced multi-photon ionization Reviewed

    Kentaro Misawa, Jun Matsumoto, Yohei Yamato, Saori Mae, Shun-Ichi Ishiuchi, Masaaki Fujii, Koichi Tanaka, Tetsuya Suzuki, Shun-Ichi Hayashi, Hiroyuki Yamada, Yuichi Goto

    SAE Technical Papers   2008-01-0761   2008

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    DOI: 10.4271/2008-01-0761

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  • Thermal emission monitoring of naphthalene from coals by supersonic jet resonance enhanced multi-photon ionization time-of-flight mass spectrometry technique Reviewed

    Michiro Aimoto, Masayuki Nishifuji, Shun-ichi Hayashi, Tetsuya Suzuki, Shun-ichi Ishiuchi, Masaaki Fujii

    BUNSEKI KAGAKU   56 ( 12 )   1133 - 1139   2007.12

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  • Hydrogen transfer dynamics in a photoexcited phenol/ammonia (1 : 3) cluster studied by picosecond time-resolved UV-IR-UV ion dip spectroscopy Reviewed

    Shun-ichi Ishiuchi, Makoto Sakai, Kota Daigoku, Kenro Hashimoto, Masaaki Fujii

    JOURNAL OF CHEMICAL PHYSICS   127 ( 23 )   234304-1 - 234304-8   2007.12

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    DOI: 10.1063/1.2806182

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  • Picosecond time-resolved infrared imaging by a nonscanning two-color infrared super-resolution microscope Reviewed

    Makoto Sakai, Tsutomu Ohmori, Masataka Kinjo, Nobuhiro Ohta, Masaaki Fujii

    Chemistry Letters   36 ( 11 )   1380 - 1381   2007.11

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    DOI: 10.1246/cl.2007.1380

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  • 微量分子の高感度測定技術 - レーザーイオン化分析装置 Reviewed

    藤井 正明, 林 俊一, 鈴木 哲也

    NIPPON STEEL MONTHLY   173   7 - 8   2007.11

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  • High-energy, narrow-bandwidth periodically poled Mg-doped LiNbO3 optical parametric oscillator with a volume Bragg grating Reviewed

    Jiro Saikawa, Masaaki Fujii, Hideki Ishizuki, Takunori Taira

    OPTICS LETTERS   32 ( 20 )   2996 - 2998   2007.10

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    DOI: 10.1364/OL.32.002996

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  • IR signature of the photoionization-induced hydrophobic -&gt; hydrophilic site switching in phenol-Ar-n clusters Reviewed

    Shun-ichi Ishiuchi, Makoto Sakai, Yuji Tsuchida, Akihiro Takeda, Yasutake Kawashima, Otto Dopfer, Klaus Mueller-Dethlefs, Masaaki Fujii

    JOURNAL OF CHEMICAL PHYSICS   127 ( 11 )   114307-1 - 114307-11   2007.9

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    DOI: 10.1063/1.2775935

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  • IR spectra of phenol(+)-Kr-n cluster cations (n=1,2): Evidence for photoionization-induced pi -&gt; H isomerization Reviewed

    Akihiro Takeda, Horia-Sorin Andrei, Mitsuhiko Miyazaki, Shun-ichi Ishiuchi, Makoto Sakai, Masaaki Fujii, Otto Dopfer

    CHEMICAL PHYSICS LETTERS   443 ( 4-6 )   227 - 231   2007.8

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    DOI: 10.1016/j.cplett.2007.06.103

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  • Hole-burning spectra of Phenol-Ar-n (n=1,2) clusters: Resolution of the isomer issue Reviewed

    Shun-Ichi Ishiuchi, Yuji Tsuchida, Otto Dopfer, Klaus Mueller-Dethlefs, Masaaki Fujii

    JOURNAL OF PHYSICAL CHEMISTRY A   111 ( 31 )   7569 - 7575   2007.8

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    DOI: 10.1021/jp070787g

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  • Investigation of the center intensity of first- and second-order Laguerre-Gaussian beams with linear and circular polarization Reviewed

    Yoshinori Iketaki, Takeshi Watanabe, Nandor Bokor, Masaaki Fujii

    OPTICS LETTERS   32 ( 16 )   2357 - 2359   2007.8

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    DOI: 10.1364/OL.32.002357

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  • Vibrational OH-stretching overtone spectroscopy of jet-cooled resorcinol and hydroquinone rotamers Reviewed

    Kaori Hattori, Shun-ichi Ishiuchi, Masaaki Fujii, Daryl L. Howard, Henrik G. Kjaergaard

    JOURNAL OF PHYSICAL CHEMISTRY A   111 ( 27 )   6028 - 6033   2007.7

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    DOI: 10.1021/jp071677c

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  • Bio-photosensor: Cyanobacterial photosystem I coupled with transistor via molecular wire. International journal

    Nao Terasaki, Noritaka Yamamoto, Kaoru Tamada, Mineyuki Hattori, Takashi Hiraga, Akihiko Tohri, Ikutaro Sato, Masako Iwai, Michinao Iwai, Shunpei Taguchi, Isao Enami, Yasunori Inoue, Yoshinori Yamanoi, Tetsu Yonezawa, Katsuya Mizuno, Masaki Murata, Hiroshi Nishihara, Satoshi Yoneyama, Makoto Minakata, Tsutomu Ohmori, Makoto Sakai, Masaaki Fujii

    Biochimica et biophysica acta   1767 ( 6 )   653 - 9   2007.6

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    We report on the first successful output of electrons directly from photosystem I (PSI) of thermophilic cyanobacteria to the gate of a field-effect transistor (FET) by bypassing electron flow via a newly designed molecular wire, i.e., artificial vitamin K(1), and a gold nanoparticle; in short, this newly manufactured photosensor employs a bio-functional unit as the core of the device. Photo-electrons generated by the irradiation of molecular complexes composed of reconstituted PSI on the gate were found to control the FET. This PSI-bio-photosensor can be used to interpret gradation in images. This PSI-FET system is moreover sufficiently stable for use exceeding a period of 1 year.

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  • Bio-photo sensor: Cyanobacterial photosystem I coupled with transistor via molecular wire Reviewed

    Nao Terasaki, Noritaka Yamamoto, Kaoru Tamada, Mineyuki Hattori, Takashi Hiraga, Akihiko Tohri, Ikutaro Sato, Masako Iwai, Michinao Iwai, Shunpel Taguchi, Isao Enami, Yasunori Inoue, Yoshinori Yamanoi, Tetsu Yonezawa, Katsuya Mizuno, Masaki Murata, Hiroshi Nishihara, Satoshi Yoneyama, Makoto Minakata, Tsutomu Ohmori, Makoto Sakai, Masaaki Fujii

    BIOCHIMICA ET BIOPHYSICA ACTA-BIOENERGETICS   1767 ( 6 )   653 - 659   2007.6

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    DOI: 10.1016/j.bbabio.2006.11.008

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  • Far-field infrared super-resolution microscopy using picosecond time-resolved transient fluorescence detected IR spectroscopy Reviewed

    Makoto Sakai, Yasutake Kawashima, Akihiro Takeda, Tsutomu Ohmori, Masaaki Fujii

    CHEMICAL PHYSICS LETTERS   439 ( 1-3 )   171 - 176   2007.5

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    DOI: 10.1016/j.cplett.2007.03.035

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  • 共鳴多光子イオン化法を用いたオンサイト・リアルタイム質量分析 // On-site and Real-time Mass Spectrometer Utilizing the Resonance Enhanced Multi-photon Ionization Technique Reviewed

    松本 淳, 三澤 健太郎, 石内 俊一, 鈴木 哲也, 林 俊一, 藤井 正明

    真空 Journal of the Vacuum Society of Japan   50 ( 4 )   241 - 245   2007.4

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    DOI: 10.3131/jvsj.50.241

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  • On polarization effects in fluorescence depletion microscopy Reviewed

    Nandor Bokor, Yoshinori Iketaki, Takeshi Watanabe, Kota Daigoku, Nir Davidson, Masaaki Fujii

    OPTICS COMMUNICATIONS   272 ( 1 )   263 - 268   2007.4

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    DOI: 10.1016/j.optcom.2006.11.002

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  • Structure of the jet-cooled 1-naphthol dimer studied by IR dip spectroscopy: Cooperation between the pi-pi interaction and the hydrogen bonding Reviewed

    Morihisa Saeki, Shun-ichi Ishiuchi, Makoto Sakai, Masaaki Fujii

    JOURNAL OF PHYSICAL CHEMISTRY A   111 ( 6 )   1001 - 1005   2007.2

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    DOI: 10.1021/jp0668910

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  • Measurement of contrast transfer function in super-resolution microscopy using two-color fluorescence dip spectroscopy Reviewed

    Yoshinori Iketaki, Takeshi Watanabe, Nandor Bokor, Takashige Omatsu, Takashi Hiraga, Kimihisa Yamamoto, Masaaki Fujii

    APPLIED SPECTROSCOPY   61 ( 1 )   6 - 10   2007.1

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  • Thermal emission monitoring of naphthalene from coals by supersonic jet resonance enhanced multi-photon ionization time-of-flight mass spectrometry technique Reviewed

    Michihiro Aimoto, Masayuki Nishifuji, Shun-Ichi Hayashi, Tetsuya Suzuki, Shun-Ichi Ishiuchi, Masaaki Fujii

    Bunseki Kagaku   56 ( 12 )   1133 - 1139   2007

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    DOI: 10.2116/bunsekikagaku.56.1133

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  • Bio-conjugate photosensitive nanomaterial Reviewed

    Takashi Hiraga, Yasunori Inoue, Hiroshi Nishihara, Makoto Minakata, Masaaki Fujii

    Shinku/Journal of the Vacuum Society of Japan   50 ( 12 )   745 - 751   2007

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    DOI: 10.3131/jvsj.50.745

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  • Investigation of image properties in super-resolution microscopy using two-color fluorescence dip spectroscopy Reviewed

    Yoshinori Iketaki, Takeshi Watanabe, Nándor Bokor, Masaaki Fujii

    Progress in Biomedical Optics and Imaging - Proceedings of SPIE   6443   2007

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    DOI: 10.1117/12.698451

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  • Chapter 12 Two-color picosecond time-resolved infrared super- resolution microscopy

    M. Sakai, T. Ohmori, M. Fujii

    Handai Nanophotonics   3   189 - 195   2007

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    DOI: 10.1016/S1574-0641(07)80017-9

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  • High-energy periodically poled MgO:LiNbO3 optical parametric system with a Bragg grating Reviewed

    J. Saikawa, M. Fujii, H. Ishizuki, T. Taira

    2007 CONFERENCE ON LASERS & ELECTRO-OPTICS/QUANTUM ELECTRONICS AND LASER SCIENCE CONFERENCE (CLEO/QELS 2007), VOLS 1-5   568 - +   2007

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  • IR signature of the photoionization-induced hydrophobic R hydrophilic site switching in phenol-Arn clusters

    Shun-ichi Ishiuchi, Makoto Sakai, Yuji Tsuchida, Akihiro Takeda, Yasutake Kawashima, Otto Dopfer, Klaus Muller-Dethlefs, Masaaki Fujii

    Virtual Journal of Nanoscale Science & Technology   16 ( 14 )   2007

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  • Investigation of image properties in super-resolution microscopy using two-color fluorescence dip spectroscopy Reviewed

    Yoshinori Iketaki, Takeshi Watanabe, Nandor Bokor, Masaaki Fujii

    THREE-DIMENSIONAL AND MULTIDIMENSIONAL MICROSCOPY: IMAGE ACQUISITION AND PROCESSING XIV   6443   2007

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    DOI: 10.1117/12.698451

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  • Difference frequency generation in a ZnGeP<inf>2</inf> crystal pumped by a large aperture periodically poled MgO: LiNbO<inf>3</inf> optical parametric system Reviewed

    J. Saikawa, M. Miyazaki, M. Fujii, H. Ishizuki, T. Taira

    Optics InfoBase Conference Papers   2007

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  • Measurement system for scanning microscope using pulse laser light source Reviewed

    Yoshinori Iketaki, Takeshi Watanabe, Yutaka Yoribayashi, Sadafumi Kajiwara, Noboru Inoue, Masaaki Fujii

    IEEJ Transactions on Electronics, Information and Systems   127 ( 9 )   1344 - 1345   2007

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    DOI: 10.1541/ieejeiss.127.1344

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  • 52 mJ narrow-bandwidth degenerated optical parametric system with a large-aperture periodically poled MgO: LiNbO<inf>3</inf> device Reviewed

    J. Saikawa, M. Fujii, H. Ishizuki, T. Taira

    Optics Letters   31 ( 21 )   3149 - 3151   2006.11

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    DOI: 10.1364/OL.31.003149

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  • Development of a supercritical fluid jet technique for supersonic jet laser Spectroscopy of nonvolatile and pyrolytic molecules Reviewed

    Shun-ichi Ishiuchi, Masaaki Fujii

    CHEMISTRY LETTERS   35 ( 9 )   1044 - 1045   2006.9

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    DOI: 10.1246/cl.2006.1044

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  • Theoretical study on the structure and the frequency of isomers of the naphthalene dimer Reviewed

    Morihisa Saeki, Hiroshi Akagi, Masaaki Fujii

    JOURNAL OF CHEMICAL THEORY AND COMPUTATION   2 ( 4 )   1176 - 1183   2006.7

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    DOI: 10.1021/ct050278n

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  • Vibrational overtone spectroscopy of phenol and its deuterated isotopomers Reviewed

    S Ishiuchi, M Fujii, TW Robinson, BJ Miller, HG Kjaergaard

    JOURNAL OF PHYSICAL CHEMISTRY A   110 ( 23 )   7345 - 7354   2006.6

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    DOI: 10.1021/jp060723q

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  • Construction of super-resolution microscope based on cw laser light source Reviewed

    Y Iketaki, T Watanabe, N Bokor, M Fujii

    REVIEW OF SCIENTIFIC INSTRUMENTS   77 ( 6 )   063112-1 - 063112-8   2006.6

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    DOI: 10.1063/1.2213213

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  • 超音速分子ジェット多光分子吸収イオン化質量分析法を基本とする環境負荷物質リアルタイムモニタリング装置の開発 // Development of Real Time Monitoring Apparatus Based on Jet-REMPI Technique for the Determination of Hazardous Organic Compounds Reviewed

    林 俊一, 鈴木 哲也, 石内 俊一, 藤井 正明

    鉄と鋼   92 ( 4 )   262 - 267   2006.4

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    For monitoring of hazardous organic compounds, we have been developing an on-line analytical instrument based on a supersonic jet resonance enhanced multi-photon laser ionization (Jet-REMPI) mass spectrometry. We have attempted to apply this technique to monitor transient attitudes of hazardous organic compounds, e.g. in the exhaust gas. It becomes possible that the real time monitoring of the gaseous compounds in atmosphere by our instrument with a continuous sample introduction. We demonstrated that the signals of mono-chlorinated benzene in the air could be detected with 150s interval through a 23m stainless steel pipe, which kept 200 degree of centigrade. Our instrument has a very high vacuum pumping system to keep the difference of the vacuum level between in atmosphere and in ionization chamber. It has been proved that monitored molecules were well cooled as the result of REMPI spectra. It is strongly advantageous for the selective detection of a specific molecular species. The emission mechanism of chlorinated aromatic compounds is discussed by monitoring 2 different kinds of compounds, simultaneously.

    DOI: 10.2355/tetsutohagane1955.92.4_262

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  • Highly efficient 1181 nm output from a transversely diode-pumped Nd3+ : KGd(WO4)(2) self-stimulating Raman laser Reviewed

    A Hamano, S Pleasants, M Okida, M Itoh, T Yatagai, T Watanabe, M Fujii, Y Iketaki, K Yamamoto, T Omatsu

    OPTICS COMMUNICATIONS   260 ( 2 )   675 - 679   2006.4

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    DOI: 10.1016/j.optcom.2005.11.023

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  • レーザーイオン化質量分析による超微量物質検出 Reviewed

    林 俊一, 鈴木 哲也, 石内 俊一, 藤井 正明

    レーザー研究   34 ( 4 )   283 - 288   2006.4

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  • Analysis of a fluorescence depletion process of Rhodamine 6G in a PMMA matrix induced by nano- and picosecond lasers Reviewed

    T Watanabe, Y Iketaki, M Sakai, T Ohmori, T Ueda, T Yamanaka, SI Ishiuchi, M Fujii

    CHEMICAL PHYSICS LETTERS   420 ( 4-6 )   410 - 415   2006.3

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    DOI: 10.1016/j.cplett.2005.12.020

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  • Excited state hydrogen transfer in fluorphenol center dot ammonia clusters studied by two-color REMPI spectroscopy Reviewed

    N Tsuji, S Ishiuchi, M Sakai, M Fujii, T Ebata, C Jouvet, C Dedonder-Lardeux

    PHYSICAL CHEMISTRY CHEMICAL PHYSICS   8 ( 1 )   114 - 121   2006

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    DOI: 10.1039/b511619h

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  • High-energy, narrow-bandwidth 2-μm optical parametric oscillator/power amplifier based on periodically poled MgO:LiNbO<inf>3</inf> Reviewed

    J. Saikawa, M. Fujii, H. Ishizuki, T. Taira

    Conference on Lasers and Electro-Optics and 2006 Quantum Electronics and Laser Science Conference, CLEO/QELS 2006   2006

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    DOI: 10.1109/CLEO.2006.4627994

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  • 2色レーザ光でナノ構造を視る ―2波長ファーフィールド超解像顕微鏡法の開発― Reviewed

    藤井 正明

    未来材料   5 ( 12 )   8 - 15   2005.12

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    Language:Japanese   Publishing type:Research paper (scientific journal)   Publisher:エヌ・ティー・エス  

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  • Investigation of polarization effects for high-numerical-aperture first-order Laguerre-Gaussian beams by 2D scanning with a single fluorescent microbead Reviewed

    N Bokor, Y Iketaki, T Watanabe, M Fujii

    OPTICS EXPRESS   13 ( 26 )   10440 - 10447   2005.12

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    DOI: 10.1364/OPEX.13.010440

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  • 回折限界以下の振動情報を得る ―赤外超解像顕微分光 Reviewed

    酒井 誠, 藤井 正明

    化学   60 ( 11 )   34 - 38   2005.11

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  • Probing stepwise complexation in phenylazomethine dendrimers by a metallo-porphyrin core

    T Imaoka, R Tanaka, S Arimoto, M Sakai, M Fujii, K Yamamoto

    JOURNAL OF THE AMERICAN CHEMICAL SOCIETY   127 ( 40 )   13896 - 13905   2005.10

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    DOI: 10.1021/ja0524797

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  • A new, highly sensitive time-of-flight mass spectrometer consisting of a flangeon-type conical ion lens system and a proto-type daly detector for exhaust gas analysis based on the Jet-REMPI technique

    T Suzuki, S Hayashi, S Ishiuchi, M Saeki, M Fujii

    ANALYTICAL SCIENCES   21 ( 8 )   991 - 996   2005.8

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    DOI: 10.2116/analsci.21.991

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  • Nanometer scale marker for fluorescent microscopy

    T Hiraga, Y Iketaki, T Watanabe, H Ohyi, K Kobayashi, N Yamamoto, T Mizokuro, M Fujii

    REVIEW OF SCIENTIFIC INSTRUMENTS   76 ( 7 )   073701-1-4   2005.7

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    DOI: 10.1063/1.1946627

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  • 光合成たんぱく質を用いたバイオフォトセンサー Reviewed

    皆方 誠, 米山 賢史, 井上 康則, 西原 寛, 藤井 正明, 平賀 隆

    応用物理   74 ( 7 )   924 - 929   2005.7

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  • Two-point separation in far-field super-resolution fluorescence microscopy based on two-color fluorescence dip spectroscopy, part I: Experimental evaluation

    T Watanabe, Y Iketaki, T Omatsu, K Yamamoto, M Fujii

    APPLIED SPECTROSCOPY   59 ( 7 )   868 - 872   2005.7

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    DOI: 10.1366/0003702054411562

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  • Theoretical investigation of the point-spread function given by super-resolving fluorescence microscopy using two-color fluorescence dip spectroscopy

    Y Iketaki, T Watanabe, M Sakai, S Ishiuchi, M Fujii, T Watanabe

    OPTICAL ENGINEERING   44 ( 3 )   033602-1-9   2005.3

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    DOI: 10.1177/1.1871512

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  • Pulsed field ionisation - ZEKE photoelectron spectrum of o-, m- and p-tolunitrile

    K Suzuki, S Ishiuchi, M Sakai, M Fujii

    JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA   142 ( 3 )   215 - 221   2005.3

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    DOI: 10.1016/j.elspec.2004.09.020

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  • Real-time observation of ionization-induced hydrophobic -&gt; hydrophilic switching

    S Ishiuchi, M Sakai, Y Tsuchida, A Takeda, Y Kawashima, M Fujii, O Dopfer, K Muller-Dethlefs

    ANGEWANDTE CHEMIE-INTERNATIONAL EDITION   44 ( 38 )   6149 - 6151   2005

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    DOI: 10.1002/anie.200501430

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  • Generation of a doughnut-shaped beam using a spiral phase plate

    T Watanabe, M Fujii, Y Watanabe, N Toyama, Y Iketaki

    REVIEW OF SCIENTIFIC INSTRUMENTS   75 ( 12 )   5131 - 5135   2004.12

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    DOI: 10.1063/1.1819555

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  • Vibrational energy relaxation of the 7-azaindole dimer in CCl4 solution studied by picosecond time-resolved transient fluorescence detected IR spectroscopy

    M Sakai, M Fujii

    CHEMICAL PHYSICS LETTERS   396 ( 4-6 )   298 - 302   2004.10

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    DOI: 10.1016/j.cplett.2004.08.041

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  • 2波長蛍光Dip分光法を用いたファーフィールド超解像顕微鏡の2点分解能評価 // Two-Point-Separation in Far-Field Super-Resolution Fluorescence Microscopy Based on Two-Color Fluorescence Dip Spectroscopy Reviewed

    渡邉 武史, 池滝 慶記, 尾松 孝茂, 山元 公寿, 藤井 正明, Takeshi Watanabe, Yoshinori Iketaki, Takashige Omatsu, Kimihisa Yamamoto, Masaaki Fujii

    表面科学 Journal of the Surface Science Society of Japan   25 ( 8 )   466 - 472   2004.8

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    The two-point-resolution of a novel two-color far-field super-resolution fluorescence microscopy has been evaluated. This microscopy is based on a combination of two-color fluorescence dip spectroscopy and a phase modulation technique for the laser beam. The two-point-resolution of the microscopy has been evaluated by using the fluorescent beads of which the size is specified by the observation with AFM. By introducing two color lasers, the observed fluorescence image shrunk down beyond the diffraction limit. In the observation of neighboring two fluorescence beads, pronounced separation between two individual fluorescence spots has been investigated. By taking the focal depth into consideration, FWHM and profile of the fluorescence images were well reproduced. It is proved that our technique breaks the diffraction limit and the spatial resolution of the optical fluorescence microscope can be improved by 2 times higher than the diffraction limit.

    DOI: 10.1380/jsssj.25.466

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  • Formation of a doughnut laser beam for super-resolving microscopy using a phase spatial light modulator

    T Watanabe, Y Igasaki, N Fukuchi, M Sakai, S Ishiuchi, M Fujii, T Omatsu, K Yamamoto, Y Iketaki

    OPTICAL ENGINEERING   43 ( 5 )   1136 - 1143   2004.5

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    DOI: 10.1117/1.1690767

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  • Vibrational overtone spectroscopy of jet-cooled aminophenols as a probe for rotational isomers

    TW Robinson, HG Kjaergaard, SI Ishiuchi, M Shinozaki, M Fujii

    JOURNAL OF PHYSICAL CHEMISTRY A   108 ( 20 )   4420 - 4427   2004.5

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    DOI: 10.1021/jp037577y

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  • Formation of nano-dots of phenylazomethine dendrimers with Rhodamine 6G on mica

    N Satoh, T Watanabe, Y Iketaki, T Omatsu, M Fujii, K Yamamoto

    POLYMERS FOR ADVANCED TECHNOLOGIES   15 ( 4 )   159 - 163   2004.4

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    DOI: 10.1002/pat.378

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  • Four-color hole burning spectra of phenol/ammonia 1 : 3 and 1 : 4 clusters

    S Ishiuchi, K Daigoku, K Hashimoto, M Fujii

    JOURNAL OF CHEMICAL PHYSICS   120 ( 7 )   3215 - 3220   2004.2

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    DOI: 10.1063/1.1640352

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  • Photo-excitation: Intact Ionization of Molecules by Resonant Enhanced Multiuphoton Ionization Spectroscopy

    Masaaki Fujii, Shun-ichi Ishiuchi, Shun-ichi Hayashi

    Shinku/Journal of the Vacuum Society of Japan   47 ( 8 )   612 - 617   2004

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    DOI: 10.3131/jvsj.47.612

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  • 「バイオ共役光受容ナノマテリアルの研究展開 −生体の知恵を電子工学に生かす」

    井上 康則, 西原 寛, 皆方 誠, 藤井 正明

    第6回高柳健次郎記念シンポジウム 論文集、静岡大学電子工学研究所   37 - 41   2004

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  • Far-Field Super-Resolution Fluorescence Microscopy Using Two-Color Fluorescence Dip Spectroscopy

    WATANABE Takeshi, IKETAKI Yoshinori, OMATSU Takashige, YAMAMOTO Kimihisa, FUJII Masaaki

    Bunko Kenkyu   53 ( 1 )   2 - 12   2004

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    DOI: 10.5111/bunkou.53.2

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  • 「バイオ共役光受容ナノマテリアルの研究展開 −FETを用いた分子修飾PSIの光電流検出」

    米山 賢史, 井上 康則, 西原 寛, 藤井 正明, 平賀 隆

    第6回高柳健次郎記念シンポジウム 論文集、静岡大学電子工学研究所   43 - 47   2004

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  • Two-point-separation in super-resolution fluorescence microscope based on up-conversion fluorescence depletion technique

    T Watanabe, Y Iketaki, T Omatsu, K Yamamoto, M Sakai, M Fujii

    OPTICS EXPRESS   11 ( 24 )   3271 - 3276   2003.12

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    DOI: 10.1364/OE.11.003271

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  • Azo-benzene polymer thin-film laser amplifier with grating couplers based on light-induced relief hologram Reviewed

    T Hirose, T Omatsu, R Kato, K Hoshino, K Harada, T Watanabe, M Fujii

    OPTICS COMMUNICATIONS   228 ( 4-6 )   279 - 283   2003.12

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    DOI: 10.1016/j.optcom.2003.09.060

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  • Predicted spatial resolution of super-resolving fluorescence microscopy using two-color fluorescence dip spectroscopy

    Y Iketaki, T Watanabe, SIM Sakai, T Omatsu, K Yamamoto, M Fujii

    APPLIED SPECTROSCOPY   57 ( 10 )   1312 - 1316   2003.10

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    DOI: 10.1366/000370203769699234

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  • Photochemistry of phenol-(NH3)(n) clusters: Solvent effect on a radical cleavage of an OH bond in an electronically excited state and intracluster reactions in the product NH4(NH3)(n-1) (n &lt;= 5)

    K Daigoku, S Ishiuchi, M Sakai, M Fujii, K Hashimoto

    JOURNAL OF CHEMICAL PHYSICS   119 ( 10 )   5149 - 5158   2003.9

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    DOI: 10.1063/1.1597492

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  • Investigation of the fluorescence depletion process in the condensed phase; application to a tryptophan aqueous solution

    Y Iketaki, T Watanabe, S Ishiuchi, M Sakai, T Omatsu, K Yamamoto, M Fujii, T Watanabe

    CHEMICAL PHYSICS LETTERS   372 ( 5-6 )   773 - 778   2003.5

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    DOI: 10.1016/S0009-2614(03)00481-0

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  • Two-color far-field super-resolution microscope using a doughnut beam

    T Watanabe, Y Iketaki, T Omatsu, K Yamamoto, S Ishiuchi, M Sakai, M Fujii

    CHEMICAL PHYSICS LETTERS   371 ( 5-6 )   634 - 639   2003.4

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    DOI: 10.1016/S0009-2614(03)00315-4

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  • Construction of a picosecond time-resolved IR dip spectrometer for studying structures and dynamics of solvated clusters Reviewed

    M Sakai, T Ueda, T Yamanaka, M Fujii

    BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN   76 ( 3 )   509 - 514   2003.3

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  • 蛍光Dip分光法の凝集相への応用

    渡邉武史, 池滝慶記, 藤井正明

    分光研究   52 ( 5 )   286 - 287   2003

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    DOI: 10.5111/bunkou.52.286

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  • Self-stimulating, Transversely Diode-pumped Nd3+ : PbWO4 yellow laser.

    Akihide Hamano Yoshiyuki, Usuki Takeshi Watanabe, Masaaki Fujii Yoshinori, Iketaki Kimihisa Yamamoto, Takashige Omatsu

    Trends in Optics and Photonics   2003

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  • Construction of a picosecond time-resolved IR dip spectrometer for hydrogen-bond clusters

    Makoto SAKAI, Tadashi, UEDA Takaya, YAMANAKA Masaaki FUJII

    Bull. Chem. Soc. Jpn   76   509   2003

  • Far-field super-resolution scanning fluorescence microscope by using up-conversion-depletion technique

    Takeshi Watanabe, Makoto, Sakai, Shun-ichi Ishiuchi Masaaki Fujii, Yoshinori Iketaki Takashige, Omatsu Kimihisa Yamamoto

    Trends in Optics and Photonics   2003

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  • Pulsed field ionization-ZEKE spectroscopy of 4-aminobenzonitrile-H2O. Hydrogen-bonding interaction in the amino site Reviewed

    K Sakota, N Yamamoto, K Ohashi, M Saeki, S Ishiuchi, M Sakai, M Fujii, H Sekiya

    PHYSICAL CHEMISTRY CHEMICAL PHYSICS   5 ( 9 )   1775 - 1779   2003

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    DOI: 10.1039/b212035f

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  • S-1-S-0 electronic spectrum of jet-cooled m-aminophenol Reviewed

    M Shinozaki, M Sakai, S Yamaguchi, T Fujioka, M Fujii

    PHYSICAL CHEMISTRY CHEMICAL PHYSICS   5 ( 22 )   5044 - 5050   2003

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    DOI: 10.1039/b309461h

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  • Super-resolution Fluorescence Microscopy in Nano-meter Scale Region Using Two-color Laser Beams Reviewed

    IKETAKI Yoshinori, WATANABE Takeshi, SAKAI Makoto, ISHIUCHI Shun-ichi, OMATSU Takashige, YAMAMOTO Kimihisa, FUJII Masaaki

    J. Surf. Sci. Soc. Jpn.   24 ( 7 )   392 - 399   2003

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    A super-resolution fluorescence microscopy using two-color laser beams was proposed. The microscopy is based on the combination of two-color fluorescence dip spectroscopy and a phase modulation technique for the laser beam. By applying the proposed technique to a laser-scanning microscope, a fluorescence image of a sample can be observed with a spatial resolution overcoming the optical diffraction limit. To demonstrate validity of the microscopy, we constructed a scanning microscope system using commercial nano-second pulse lasers. An image of micro beads containing dye molecules was observed by the microscopy. We succeeded in obtaining the image with a resolution overcoming the diffraction limit in nano-meter scale region. The experimental data showed that the resolution was improved three times at least. The microscopy is expected to be an appropriate analysis method for the samples with nano-meter scale structures.

    DOI: 10.1380/jsssj.24.392

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  • Hydrogen transfer in photo-excited phenol/ammonia clusters by UV-IR-UV ion dip spectroscopy and ab initio molecular orbital calculations. II. Vibrational transitions Reviewed

    S Ishiuchi, K Daigoku, M Saeki, M Sakai, K Hashimoto, M Fujii

    JOURNAL OF CHEMICAL PHYSICS   117 ( 15 )   7083 - 7093   2002.10

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    DOI: 10.1063/1.1508104

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  • IR-dip and IR-UV hole-burning spectra of jet-cooled 4-aminobenzonitrile-(H2O)(1). Observation of pi-type and sigma-type hydrogen-bonded conformers in the CN site

    K Sakota, N Yamamoto, K Ohashi, M Saeki, S Ishiuchi, M Sakai, M Fujii, H Sekiya

    CHEMICAL PHYSICS   283 ( 1-2 )   209 - 219   2002.10

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    DOI: 10.1016/S0301-0104(02)00501-3

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  • Hydrogen transfer in photoexcited phenol/ammonia clusters by UV-IR-UV ion dip spectroscopy and ab initio molecular orbital calculations. I. Electronic transitions

    S Ishiuchi, K Daigoku, M Saeki, M Sakai, K Hashimoto, M Fujii

    JOURNAL OF CHEMICAL PHYSICS   117 ( 15 )   7077 - 7082   2002.10

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    DOI: 10.1063/1.1508103

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  • Picosecond time-resolved nonresonant ionization detected IR spectroscopy on 7-azaindole dimer

    M Sakai, S Ishiuchi, M Fujii

    EUROPEAN PHYSICAL JOURNAL D   20 ( 3 )   399 - 402   2002.9

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    DOI: 10.1140/epjd/e2002-00162-7

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  • Structure of hydrogen-bonded clusters of 7-azaindole studied by IR dip spectroscopy and ab initio molecular orbital calculation (vol 105A, pg 9371, 2001)

    H Yokoyama, H Wantanabe, T Omi, S Ishiuchi, M Fujii

    JOURNAL OF PHYSICAL CHEMISTRY A   106 ( 5 )   854 - 854   2002.2

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  • OH- and CH-stretching overtone spectra of catechol

    HG Kjaergaard, DL Howard, DP Schofield, TW Robinson, S Ishiuchi, M Fujii

    JOURNAL OF PHYSICAL CHEMISTRY A   106 ( 2 )   258 - 266   2002.1

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    DOI: 10.1021/jp0124847

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  • The PFI-ZEKE photoelectron spectrum of m-fluorophenol and its aqueous complexes: Comparing intermolecular vibrations in rotational isomers Reviewed

    K Yosida, K Suzuki, S Ishiuchi, M Sakai, M Fujii, CEH Dessent, K Muller-Dethlefs

    PHYSICAL CHEMISTRY CHEMICAL PHYSICS   4 ( 12 )   2534 - 2538   2002

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    DOI: 10.1039/b201107g

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  • Pulsed Field Ionization Zero Kinetic Energy Photoelectron Study on Methylanisole Molecules in a Supersonic Jet

    Keigo Yosida, Kazunari Suzuki, Shun-ichi Ishiuchi, Makoto Sakai, Masaaki Fujii, Caroline E, H. Dessent, Klaus Muller-Dethlefs

    Phys. Chem. Chem. Phys.   4   2534 - 2538   2002

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  • Structure of 1-naphthol/alcohol clusters studied by IR dip spectroscopy and ab initio molecular orbital calculations

    M Saeki, S Ishiuchi, M Sakai, M Fujii

    JOURNAL OF PHYSICAL CHEMISTRY A   105 ( 44 )   10045 - 10053   2001.11

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    DOI: 10.1021/jp0112469

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  • Picosecond time-resolved infrared spectra of photo-excited phenol-(NH3)(3) cluster

    S Ishiuchi, M Sakai, K Daigoku, T Ueda, T Yamanaka, K Hashimoto, M Fujii

    CHEMICAL PHYSICS LETTERS   347 ( 1-3 )   87 - 92   2001.10

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    DOI: 10.1016/S0009-2614(01)01017-X

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  • Structure of hydrogen-bonded clusters of 7-azaindole studied by IR dip spectroscopy and ab initio molecular orbital calculation

    F Yokoyama, H Watanabe, T Omi, S Ishiuchi, M Fujii

    JOURNAL OF PHYSICAL CHEMISTRY A   105 ( 41 )   9366 - 9374   2001.10

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    DOI: 10.1021/jp011245g

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  • Electronic and infrared spectra of jet-cooled 4-aminobenzonitrile-H2O. Change of NH2 from proton acceptor to proton donor by CN substitution

    K Sakota, N Yamamoto, K Ohashi, H Sekiya, M Saeki, S Ishiuchi, M Sakai, M Fujii

    CHEMICAL PHYSICS LETTERS   341 ( 1-2 )   70 - 76   2001.6

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    DOI: 10.1016/S0009-2614(01)00463-8

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  • Very Seisitive Infrared Spectrscopy of gas-phase molecules and clusters by Laser Double Resonance Technique

    FUJII Masaaki

    rle   21   155 - 156   2001.1

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    DOI: 10.2184/lsj.29.Supplement_155

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  • Structures of carbazole-(H2O)n (n = 1-3) clusters studied by IR dip spectroscopy and a quantum chemical calculation

    Makoto Sakai, Kota Daigoku, Shun-ichi Ishiuchi Morihisa Saeki Kenro Hashimoto, Masaaki Fujii

    J. Phys. Chem. A   105   8651   2001

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  • Pulsed field ionization zero kinetic energy photoelectron study on methylanisole molecules in a supersonic jet Reviewed

    S Kinoshita, H Kojima, T Suzuki, T Ichimura, K Yoshida, M Sakai, M Fujii

    PHYSICAL CHEMISTRY CHEMICAL PHYSICS   3 ( 22 )   4889 - 4897   2001

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    DOI: 10.1039/B105719G

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  • Butterfly vibration of the tetrafluorobenzene cation studied by pulsed field ionization-zero kinetic energy photoelectron spectroscopy

    K Takazawa, M Fujii

    JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA   112 ( 1-3 )   241 - 245   2000.11

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    DOI: 10.1016/S0368-2048(00)00217-6

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  • Structure and dynamics of 9(10H)-acridone and its hydrated clusters. II. Structural characterization of hydrogen-bonding networks

    M Mitsui, Y Ohshima, S Ishiuchi, M Sakai, M Fujii

    JOURNAL OF PHYSICAL CHEMISTRY A   104 ( 38 )   8649 - 8659   2000.9

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    DOI: 10.1021/jp0010482

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  • Internal methyl group rotation in o-cresol studied by pulsed field ionization-ZEKE photoelectron spectroscopy

    K Suzuki, Y Emura, S Ishiuchi, M Fujii

    JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA   108 ( 1-3 )   13 - 20   2000.7

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    DOI: 10.1016/S0368-2048(00)00141-9

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  • Infrared dip spectra of photochemical reaction products in a phenol/ammonia cluster: examination of intracluster hydrogen transfer Reviewed

    S Ishiuchi, M Saeki, M Sakai, M Fujii

    CHEMICAL PHYSICS LETTERS   322 ( 1-2 )   27 - 32   2000.5

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    DOI: 10.1016/S0009-2614(00)00389-4

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  • Structural characterization of the acridine-(H2O)n (n=1-3) clusters by fluorescence-detected infrared spectroscopy

    M Mitsui, Y Ohshima, S Ishiuchi, M Sakai, M Fujii

    CHEMICAL PHYSICS LETTERS   317 ( 3-5 )   211 - 219   2000.2

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    DOI: 10.1016/S0009-2614(99)01386-X

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  • Overtone Spectroscopy by Tunable IR Laser and its Aplication to Bond Creaving

    FUJII Masaaki

    rle   20   191 - 192   2000.1

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    DOI: 10.2184/lsj.28.Supplement_191

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  • Pulsed field ionization-ZEKE spectroscopy of cresoles and their aqueous complexes: Internal rotation of methyl group and intermolecular vibrations Reviewed

    Kazunari Suzuki, Shun-Ichi Ishiuchi, Masaaki Fujii

    Faraday Discussions   115   229 - 243   2000

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

    DOI: 10.1039/b001093f

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  • Pulsed field ionization-ZEKE spectroscopy of cresoles and their aqueous complexes: Internal rotation of methyl group and intermolecular vibrations

    K Suzuki, S Ishiuchi, M Fujii

    FARADAY DISCUSSIONS   115   229 - 243   2000

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  • Super-resolution fluorescence microscopy by up-conversion-depletion using two color lasers

    Y. Iketaki, T. Omatsu, O. Sato, T. Suzuki, M. Fujii

    Pacific Rim Conference on Lasers and Electro-Optics, CLEO - Technical Digest   448 - 449   2000

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  • Structure of 1-naphthol-water clusters studied by IR dip spectroscopy and ab initio molecular orbital calculations Reviewed

    R Yoshino, K Hashimoto, T Omi, S Ishiuchi, M Fujii

    JOURNAL OF PHYSICAL CHEMISTRY A   102 ( 31 )   6227 - 6233   1998.7

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    DOI: 10.1021/jp9815006

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  • Nonresonant ionization detected IR spectrum of jet-cooled phenol. Ionization mechanism and its application to overtone spectroscopy

    S Ishiuchi, H Shitomi, K Takazawa, M Fujii

    CHEMICAL PHYSICS LETTERS   283 ( 3-4 )   243 - 250   1998.2

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    DOI: 10.1016/S0009-2614(97)01351-1

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  • Overtone spectroscopy of jet-cooled phenol studied by nonresonant ionization detected IR spectroscopy Reviewed

    S Ishiuchi, M Fujii

    RESONANCE IONIZATION SPECTROSCOPY   454   137 - 142   1998

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  • Nonlinear Spectroscopy: Theory and Applications IV.Higher excited electronic state studied by two-color double resonant spectroscopy

    FUJII Masaaki

    Bunko Kenkyu   46 ( 4 )   211 - 220   1997.8

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    DOI: 10.5111/bunkou.46.211

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    Other Link: https://jlc.jst.go.jp/DN/JALC/00048345293?from=CiNii

  • Internal rotation of methyl group in o- and m-toluidine cations as studied by pulsed field ionization zero kinetic energy spectroscopy Reviewed

    H Ikoma, K Takazawa, Y Emura, S Ikeda, H Abe, H Hayashi, M Fujii

    JOURNAL OF CHEMICAL PHYSICS   105 ( 23 )   10201 - 10209   1996.12

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  • Laser Detection of Vibrationally Highly Excited Molecules and Its Application to Reaction Control

    FUJII Masaaki

    rle   27 ( 6 )   404 - 410   1996.6

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    New spectroscopic technique which detects IR transition with high sensitivity is introduced asa tool to study laserreaction control by vibrational excitation. This spectroscopy, nonresonant ionization detectedIR spectroscopy isIR-UV double resonance spectroscopy which detects a vibrationally excited molecule by selective ionizationdue to UV laser. Vibrational transitions of jet-cooled phenol have been detected by Nonresonant IonizationDetected (NID) -IR spectroscopy from 3400 cm-1 to 14000 cm-1. The bandwidth of the OH overtone is foundto decrease with increase in the vibrational quantum number. Relaxation of the vibrationally excited moleculeand its application to reaction control are discussed.

    DOI: 10.2184/lsj.27.404

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  • Nonresonant ionization detected IR spectroscopy for the vibrational study in a supersonic jet Reviewed

    T Omi, H Shitomi, N Sekiya, K Takazawa, M Fujii

    CHEMICAL PHYSICS LETTERS   252 ( 3-4 )   287 - 293   1996.4

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  • INTERNAL-ROTATION OF THE METHYL-GROUP IN CATIONS OF TOLUENE DERIVATIVES Reviewed

    M FUJII, K TAKAZAWA, M ITO

    JOURNAL OF THE CHINESE CHEMICAL SOCIETY   42 ( 2 )   335 - 341   1995.4

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  • Overtone spectroscopy in nitrous oxide Reviewed

    Alain Campargue, Dmitri Permogorov, Mohamed Bach, Mohammed Abbouti Temsamani, Jean Vander Auwera, Michel Herman, Masaaki Fujii

    The Journal of Chemical Physics   103 ( 14 )   5931 - 5938   1995

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    DOI: 10.1063/1.470473

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  • Electronic spectra of o-, m- and p-tolunitrile-substituent effect on internal rotation of the methyl group Reviewed

    Masaaki Fujii, Masayo Yamauchi, Ken Takazawa, Mitsuo Ito

    Spectrochimica Acta Part A: Molecular Spectroscopy   50 ( 8-9 )   1421 - 1433   1994

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    DOI: 10.1016/0584-8539(94)E0052-C

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  • OH STRETCHING VIBRATIONS OF PHENOL-(H2O)N(N=1-3) COMPLEXES OBSERVED BY IR-UV DOUBLE-RESONANCE SPECTROSCOPY Reviewed

    S TANABE, T EBATA, M FUJII, N MIKAMI

    CHEMICAL PHYSICS LETTERS   215 ( 4 )   347 - 352   1993.12

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  • INTERNAL-ROTATION OF THE METHYL-GROUP IN FLUOROTOLUENE CATIONS AS STUDIED BY PULSED-FIELD IONIZATION-ZERO KINETIC-ENERGY SPECTROSCOPY Reviewed

    K TAKAZAWA, M FUJII, M ITO

    JOURNAL OF CHEMICAL PHYSICS   99 ( 5 )   3205 - 3217   1993.9

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  • INTERNAL-ROTATION OF THE METHYL-GROUP IN O-FLUOROTOLUENE, M-FLUOROTOLUENE AND P-FLUOROTOLUENE AND THEIR IONS AS STUDIED BY SUPERSONIC JET SPECTROSCOPIES Reviewed

    M ITO, K TAKAZAWA, M FUJII

    JOURNAL OF MOLECULAR STRUCTURE   292   9 - 16   1993.3

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  • PULSED-FIELD-IONIZATION SPECTROSCOPY FOR THE STUDY OF MOLECULAR CATIONS Reviewed

    K TAKAZAWA, M FUJII, T EBATA, M ITO

    CHEMICAL PHYSICS LETTERS   189 ( 6 )   592 - 597   1992.2

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  • ELECTRONIC-SPECTRA OF ORTHO-DIFLUOROBENZENE, META-DIFLUOROBENZENE, AND PARA-DIFLUOROBENZENE CATIONS - STRIKING SIMILARITY IN VIBRONIC COUPLING BETWEEN THE NEUTRAL MOLECULE AND ITS CATION Reviewed

    Y TSUCHIYA, K TAKAZAWA, M FUJII, M ITO

    JOURNAL OF PHYSICAL CHEMISTRY   96 ( 1 )   99 - 104   1992.1

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  • Two-color double resonance spectroscopy via à 1A u state of acetylene: 3p Rydberg state and its Renner-Teller effect Reviewed

    Makoto Takahashi, Masaaki Fujii, Mitsuo Ito

    The Journal of Chemical Physics   96 ( 9 )   6486 - 6494   1992

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    DOI: 10.1063/1.462587

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  • Electronic spectra of fluorobenzene cations as studied by mass-selected ion dip spectroscopy Reviewed

    Masaaki Fujii, Yuko Tsuchiya, Mitsuo Ito

    Journal of Molecular Structure   249 ( 1 )   55 - 68   1991.8

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    DOI: 10.1016/0022-2860(91)85054-7

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  • VIBRONIC COUPLING IN S1 OF ORTHO-DIFLUOROBENZENE AND META-DIFLUOROBENZENE Reviewed

    Y TSUCHIYA, K TAKAZAWA, M FUJII, M ITO

    CHEMICAL PHYSICS LETTERS   183 ( 1-2 )   107 - 112   1991.8

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  • One-photon and Two-photon Ionization Threshold Spectra of Jet-cooled 1,4-Difluorobenzene.

    Fujii Masaaki, Ito Mitsuo

    Chemistry Letters   ( 6 )   933 - 936   1991

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    Ionization thresholds of jet-cooled 1,4-difluorobenzene were measured by one-photon ionization and two-photon ionization from the S1 state. Most of the ionization thresholds were commonly observed in both threshold spectra in spite of the existence of inversion symmetry for this molecule. It is concluded that the symmetry of ejected photoelectron changes in the one-photon and two-photon ionizations leaving the symmetry of the cation unchanged.

    DOI: 10.1246/cl.1991.933

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  • DIRECT OBSERVATION OF 2ND EXCITED 1,3(N,PI-STAR) STATES OF PYRAZINE BY UV-IR DOUBLE-RESONANCE DIP SPECTROSCOPY Reviewed

    Y OKUZAWA, M FUJII, M ITO

    CHEMICAL PHYSICS LETTERS   171 ( 4 )   341 - 346   1990.8

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  • ELECTRONIC-SPECTRA OF PARA-DIFLUOROBENZENE CATION BY MASS-SELECTED ION DIP SPECTROSCOPY IN A SUPERSONIC JET Reviewed

    Y TSUCHIYA, M FUJII, M ITO

    CHEMICAL PHYSICS LETTERS   168 ( 2 )   173 - 180   1990.4

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  • Predissociation of the acetylene à 1Au, state and its mechanism Reviewed

    Akimitsu Haijima, Masaaki Fujii, Mitsuo Ito

    The Journal of Chemical Physics   92 ( 2 )   959 - 968   1990

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    DOI: 10.1063/1.458078

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  • ELECTRONIC-SPECTRA OF ISOLATED CATIONS IN SUPERSONIC JETS BY MASS-SELECTED ION-DIP SPECTROSCOPY - CATIONS OF BENZENE, P-DIFLUOROBENZENE, AND 1,3,5-TRIFLUOROBENZENE Reviewed

    Y TSUCHIYA, M FUJII, M ITO

    JOURNAL OF CHEMICAL PHYSICS   90 ( 12 )   6965 - 6976   1989.6

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  • Predissociation of acetylene in à 1Au state Reviewed

    Masaaki Fujii, Akimitsu Haijima, Mitsuo Ito

    Chemical Physics Letters   150 ( 6 )   380 - 385   1988.9

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    DOI: 10.1016/0009-2614(88)80423-8

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  • Jahn-Teller splitting induced by penetration of the 4p Rydberg electron in 1,4-diazabicyclo[2.2.2]octane Reviewed

    Masaaki Fujii, Yuko Tsuchiya, Mitsuo Ito

    Journal of Physical Chemistry   92 ( 9 )   2398 - 2400   1988

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    DOI: 10.1021/j100320a002

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  • Keto-enol tautomer of uracil and thymine Reviewed

    Yuko Tsuchiya, Teruhiko Tamura, Masaaki Fujii, Mitsuo Ito

    Journal of Physical Chemistry   92 ( 7 )   1760 - 1765   1988

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    DOI: 10.1021/j100318a013

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  • 2-COLOR FLUORESCENCE DIP AND ION DIP SPECTRA OF JET-COOLED BENZENE Reviewed

    T KAKINUMA, M FUJII, M ITO

    CHEMICAL PHYSICS LETTERS   140 ( 4 )   427 - 433   1987.10

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  • HIGHLY EXCITED RYDBERG STATES OF PYRAZINE AND THEIR AUTOIONIZATION Reviewed

    A GOTO, M FUJII, M ITO

    JOURNAL OF PHYSICAL CHEMISTRY   91 ( 9 )   2268 - 2273   1987.4

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  • 2-COLOR FLUORESCENCE DIP AND MPI SPECTRA OF JET-COOLED PYRAZINE Reviewed

    A GOTO, M FUJII, M ITO

    CHEMICAL PHYSICS LETTERS   135 ( 4-5 )   407 - 412   1987.4

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  • Selection rule and efficiency for autoionization of diazabicyclooctane as studied by two-color double-resonance spectroscopy Reviewed

    Masaaki Fujii, Kenji Sato, Katsumi Kimura

    Journal of Physical Chemistry   91 ( 26 )   6507 - 6510   1987

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    DOI: 10.1021/j100310a017

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  • ELECTRONIC-SPECTRA OF 1,2,4,5-TETRAFLUOROBENZENE IN A SUPERSONIC JET - BUTTERFLY TUNNELING IN THE EXCITED-STATE Reviewed

    K OKUYAMA, T KAKINUMA, M FUJII, N MIKAMI, M ITO

    JOURNAL OF PHYSICAL CHEMISTRY   90 ( 17 )   3948 - 3952   1986.8

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  • 2-COLOR MULTIPHOTON IONIZATION SPECTRA OF JET-COOLED PARA-DIFLUOROBENZENE - S AND D RYDBERG STATES Reviewed

    M FUJII, T KAKINUMA, N MIKAMI, M ITO

    CHEMICAL PHYSICS LETTERS   127 ( 4 )   297 - 302   1986.6

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  • SENSITIZED PHOSPHORESCENCE EXCITATION-SPECTRA OF COMPLEXES OF GLYOXAL, PYRAZINE, AND PHENOL - GREAT ENHANCEMENT OF PHOSPHORESCENCE YIELD BY COMPLEXATION Reviewed

    A GOTO, M FUJII, N MIKAMI, M ITO

    JOURNAL OF PHYSICAL CHEMISTRY   90 ( 11 )   2370 - 2374   1986.5

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  • ELECTRONIC-SPECTRA OF URACIL IN A SUPERSONIC JET Reviewed

    M FUJII, T TAMURA, N MIKAMI, M ITO

    CHEMICAL PHYSICS LETTERS   126 ( 6 )   583 - 587   1986.5

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  • HIGHER SINGLET AND TRIPLET N,PI-STAR STATES OF GLYOXAL VAPOR Reviewed

    A GOTO, M FUJII, N MIKAMI, M ITO

    CHEMICAL PHYSICS LETTERS   119 ( 1 )   17 - 21   1985

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  • Non-radiative channel for the Rydberg states as studied by two-color ionization spectroscopy.

    FUJII Masaaki, MIKAMI Naohiko, ITO Mitsuo

    Bunko Kenkyu   34 ( 6 )   379 - 380   1985

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    DOI: 10.5111/bunkou.34.379

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  • RYDBERG STATES (N=4-29) OF AZABICYCLO [2.2.2] OCTANE AS STUDIED BY 2-COLOR FLUORESCENCE DIP AND MULTIPHOTON IONIZATION SPECTROSCOPIES

    M FUJII, N MIKAMI, M ITO

    CHEMICAL PHYSICS   99 ( 1 )   193 - 206   1985

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    DOI: 10.1016/0301-0104(85)80118-X

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  • 2-COLOR MULTIPHOTON IONIZATION AND FLUORESCENCE DIP SPECTRA OF DIAZABICYCLO[2.2.2]OCTANE IN A SUPERSONIC FREE JET - RYDBERG STATES (N=5-39) AND AUTOIONIZATION

    M FUJII, T EBATA, N MIKAMI, M ITO

    JOURNAL OF PHYSICAL CHEMISTRY   88 ( 19 )   4265 - 4271   1984

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    DOI: 10.1021/j150663a016

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  • MODE-DEPENDENT INTRAMOLECULAR VIBRATIONAL REDISTRIBUTION IN THE S1 STATE OF JET-COOLED PARA-DIFLUOROBENZENE

    M FUJII, T EBATA, N MIKAMI, M ITO, SH KABLE, WD LAWRANCE, TB PARSONS, AEW KNIGHT

    JOURNAL OF PHYSICAL CHEMISTRY   88 ( 14 )   2937 - 2940   1984

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  • ROTATIONAL ENERGY-TRANSFER IN NO (A2-SIGMA+, V = 0 AND 1) STUDIED BY 2-COLOR DOUBLE-RESONANCE SPECTROSCOPY

    T EBATA, Y ANEZAKI, M FUJII, N MIKAMI, M ITO

    CHEMICAL PHYSICS   84 ( 1 )   151 - 157   1984

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    DOI: 10.1016/0301-0104(84)80012-9

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  • 2-COLOR MULTIPHOTON IONIZATION OF DIAZABICYCLOOCTANE IN A SUPERSONIC FREE JET

    M FUJII, T EBATA, N MIKAMI, M ITO

    CHEMICAL PHYSICS LETTERS   101 ( 6 )   578 - 582   1983

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    DOI: 10.1016/0009-2614(83)87036-5

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  • ELECTRONIC-SPECTRA OF JET-COOLED AZULENE

    M FUJII, T EBATA, N MIKAMI, M ITO

    CHEMICAL PHYSICS   77 ( 2 )   191 - 200   1983

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    DOI: 10.1016/0301-0104(83)85076-9

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  • HIGH RYDBERG STATES OF NO STUDIED BY 2-COLOR MULTIPHOTON SPECTROSCOPY

    T EBATA, Y ANEZAKI, M FUJII, N MIKAMI, M ITO

    JOURNAL OF PHYSICAL CHEMISTRY   87 ( 24 )   4773 - 4776   1983

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MISC

  • IR super-resolution microscopy

    Makoto Sakai, Masaaki Fujii

    Kobunshi   64 ( 9 )   588 - 589   2015.9

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  • Real time observation of excited state hydrogen transfer reaction in phenol-(NH3)(n) (n=4, 5) clusters by ps time resolved infrared spectroscopy

    Miyazaki, Mitsuhiko, Ishiuchi, Shun-ichi, Sakai, Makoto, Fujii, Masaaki

    Abstracts of Papers of the American Chemical Society   238   2009

Presentations

  • Double Ion Trap Laser Spectroscopy on Biological Motif for Molecular & Ion Recognition– Temperature Effect Invited

    Masaaki Fujii

    8th Asian Spectroscopy Conference  2023.9 

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  • Hydration-Induced Protomer Switching in p-Aminobenzoic Acid Studied by Cold Double Ion Trap Infrared Spectroscopy Invited

    Masaaki Fujii

    Seminar in Xantheas Lab of PNNL  2023.5 

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  • Ion recognition mechanism beyond the size-matching model – Cold ion trap- IR spectroscopy of valinomycin - alkali metal ion complexes Invited

    Masaaki Fujii

    Physical Chemistry Seminar at the University of Washington  2023.5 

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  • Ion Transportation in the Magnesium Channel: Insights From the Stepwise Hydration of [CH3COOMg]+ Invited

    Masaaki Fujii

    Symposium “40 years of gas phase laser spectroscopy: an ongoing story”  2022.9 

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  • Double Ion Trap Laser Spectroscopy on Biological Motif for Molecular Recognition - Temperature Effect Invited

    Masaaki Fujii

    Gordon Research Conference : Molecular & Ionic Clusters  2022.8 

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  • Ionisation induced solvent switching – Manchester • Berlin • Tokyo International collaboration Invited

    Masaaki Fujii

    Tokyo Institute of Technology and University of Manchester Joint Seminar  2021.11 

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  • Cold Ion Trap Infrared Spectroscopy on Metal Ions Complexes with a Partial Peptide of the Selectivity Filter in K+ Channels - Ion Selectivity and Hydration Invited

    Masaaki Fujii

    11th Asian Photochemistry Conference (APC 2021)  2021.11 

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  • Cold Ion Trap Infrared Spectroscopy of Alkali Metal Ions Complexes with a Partial Peptide of the Selectivity Filter in Potassium Channels Invited

    Masaaki Fujii

    IUPAC | CCCE 2021  2021.8 

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  • Revealing the role of excited state proton transfer (ESPT) in excited statehydrogen transfer (ESHT): systematic study in phenol–(NH3)n clusters Invited

    Masaaki Fujii

    36th Symposium on Chemical Kinetics and Dynamics  2021.6 

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  • Panel Discussion "Building a “world research hub”: beyond Covid-19" Invited

    Masaaki Fujii

    Tokyo Tech World Research Hub Initiative (WRHI) Online International Symposium  2020.11 

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  • Microsolvation and Hydrogen-Bonding Invited

    Masaaki Fujii

    Gordon Research Conferences: Molecular and Ionic Clusters 2020  2020.1 

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  • Bottom-up Approach to Molecular Recognition in Biological Systems: ESI / Cold Ion Trap Spectroscopy Invited

    Masaaki Fujii

    International Symposium Frontiers in Cluster Science: Structure and Dynamics  ( TU Berlin, seminar room ER 325 )   2019.11 

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  • Bottom-up approach to ion-selectivity in biological system by electrospray-cold ion trap laser spectroscopy Invited

    Masaaki Fujii

    Seminar in YP Lab  ( National Chiao Tung University, Hsinchu, Taiwan )   2019.10 

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  • Bottom-Up Approach to the Molecular Recognition of Adrenaline Receptor by Electrospray-Cold Ion Trap IR Laser Spectroscopy Invited

    Masaaki Fujii

    10th International Conference on Advanced Vibrational Spectroscopy (ICAVS10)  ( The University of Auckland, Auckland, New Zealand )   2019.7 

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  • Overview : Non-covalent Interactions: A Challenge to Experiment and Theory Invited

    Masaaki Fujii

    Manchester International Symposium: “Highly Excited States, Many-body and Non-covalent Interactions”  ( The University of Manchester, Manchester, U.K. )   2019.6 

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  • Bottom-Up Approach to Biological Molecular Recognition - Electrospray-Cold Ion Trap Laser Spectroscopy on Binding Motif of Adrenergic Receptor Invited

    Masaaki Fujii

    Seminar in DICP  ( Dailian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, Chaina )   2018.11 

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  • Chiral recognition in protonated molecular clusters studied by mass-coupled IR-UV double resonance spectroscopy with cold ion trap Invited

    Masaaki Fujii

    22nd International Mass Spectrometry Conference 2018 (IMSC2018)  ( Fortezza da Basso, Florence, Italy )   2018.8 

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  • Cluster and Condensed Phase Dynamics Invited

    Masaaki Fujii

    Gordon Research Conferences: Molecular and Ionic Clusters 2018  ( Renaissance Tuscany, Il Ciocco, Lucca, Italy )   2018.2 

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  • Time-resolved IR/NIR spectroscopy on excited state hydrogen transfer in phenol-ammonia clusters - electron-proton decoupling and effect of triplet state Invited

    Masaaki Fujii

    W?rzburg seminar  ( University of W?rzburg, W?rzburg, Germany )   2017.11 

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  • Electrosplay / cold ion trap laser spectroscopy on bomolecules - Bottom-up approach to molecular recognition in biological systems Invited

    Masaaki Fujii

    SEMINAIRE ISMO  ( Universit? Paris Sud 11, Orsay, France )   2017.10 

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  • Bottom-up Spectroscopic Approach to Molecular Recognition in Neurotransmitter Systems ? ESI / Cold Ion Trap Laser Spectroscopy of Molecular Complex of Adrenaline Receptor Pocket Invited

    Masaaki Fujii

    The 6th Asian Spectroscopy Conference (ASC2017)  ( Learning Resource Center, Macronix Building (旺 宏 館), National Tsing Hua University, Taiwan )   2017.9 

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  • ESI / cold ion trap laser spectroscopy on biomolecules - Bottom-up approach to molecular recognition in neurotransmitter systems Invited

    Masaaki Fujii

    Research Seminar  ( University of York, York, UK )   2017.8 

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  • Watching Water Migration around Aromatic Molecules at the Single-Molecular Level by picosecond time-resolved IR-UV double resonance spectroscopy Invited

    Masaaki Fujii

    International Workshop “Present and Future of Ultrafast Spectroscopy”  ( RIKEN, Wako, Saitama, Japan )   2017.3 

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  • Electrosplay / cold ion trap laser spectroscopy on partial peptide of adrenaline receptor and its complex with neurotransmitters - Bottom-up approach to molecular recognition in biological system Invited

    Masaaki Fujii

    Winter School the Brain Korea 21 Plus(BK21+) program  ( Gyeongsang National University, Jinju, Korea )   2017.2 

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  • Watching Water Migration around Aromatic Molecules at the Single-Molecular Level Invited

    Masaaki Fujii

    Division C Seminar  ( Max-Born Institute, Berlin, Germany )   2016.11 

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  • Ionization Induced π-H Site Switching in?Resorcinol-Ar Clusters Invited

    Masaaki Fujii

    AG Dopfer Group Seminar  ( TU Berlin, Berlin, Germany )   2016.11 

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  • Probing solvation dynamics at a single molecular level Invited

    Masaaki Fujii

    International symposium: Recent Progress in Molecular Spectroscopy and Dynamics  ( Nishijin Plaza, Kyushu University, Fukuoka, Japan )   2016.7 

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  • Vibrational spectroscopy on partial peptides SIVSF of adrenaline receptor Invited

    Masaaki Fujii

    251th American Chemical Society National Meeting & Exposition  ( San Diego Convention Center, San Diego, CA, USA )   2016.3 

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  • Picosecond Time-Resolved IR/NIR Spectroscopy on Intra-Cluster Structural Dynamics Invited

    Masaaki Fujii

    Gordon Research Conferences: Molecular and Ionic Clusters 2016  ( Four Points Sheraton / Holiday Inn Express, Ventura, CA, USA )   2016.1 

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  • Watching solvent migration dynamics in clusters by picosecond time-resolved IR spectroscopy Invited

    Masaaki Fujii

    The 2015 International Chemical Congress of Pacific Basin Societies (PACIFICHEM 2015)  ( Honolulu, Hawaii, USA )   2015.12 

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  • Vibrational imaging by two-color infrared microscope Invited

    Masaaki Fujii

    The 2015 International Chemical Congress of Pacific Basin Societies (PACIFICHEM 2015)  ( Honolulu, Hawaii, USA )   2015.12 

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  • Water Migration Dynamics Studied by Picosecond Time-Resolved IR Spectroscopy Invited

    Masaaki Fujii

    PIIM Seminar  ( Aix-Marseille University, Marseille, France )   2015.10 

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  • Gas Phase Spectroscopy of Neurotransmitters and Partial Peptides of Receptor by IR-UV Double Resonance Spectroscopy Invited

    Masaaki Fujii

    The Australasian Spectroscopy Conferences (The 11th Australian Conference on Vibrational Spectrosocpy: ACOVS11 and the 5th Asian Spectroscopy Conference: ASC5)  ( Holme Building (Building A09) in the University of Sydney, Sydney, Australia. )   2015.9 

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  • ESI / Cold Ion Trap Machine Invited

    Masaaki Fujii

    TU Berlin AG Dopfer seminar  ( TU Berlin, Berlin, Germany )   2015.6 

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  • Mid-infrared spectroscopy for ground and excited state proton transfer in phenol/naphthol?ammonia clusters Invited

    Masaaki Fujii

    248th ACS National Meeting  ( San Francisco, USA )   2014.8 

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  • Conformational Reduction of Catecholamines Studied by Laser-Desorption Supersonic Jet Spectroscopy Invited

    Masaaki Fujii

    Conference on Isolated Biomolecules and Biomolecular Interactions 2014  ( Centre IGESA, on the Island of Porquerolles, Hy?res, France )   2014.5 

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  • 多波長レーザー赤外分光法の開発と気相クラスター内ダイナミクスの直接観測 Invited

    藤井 正明

    日本化学会第94春季年会  ( 名古屋大学 東山キャンパス、愛知県名古屋市千種区 )   2014.3 

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  • イオン化で誘起される水の運動を観る−水和クラスターのピコ秒時間分解赤外分光 Invited

    藤井 正明

    分子研・計算分子科学研究拠点(TCCI) 第3回実験化学との交流シンポジウム  ( 京都大学福井謙一記念研究センター、京都府京都市 )   2013.11 

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  • Time-Resolved Vibrational Spectroscopy on Water Migration Dynamics in Molecular Clusters Invited

    Masaaki Fujii

    Seventh International Conference on Advanced Vibrational Spectroscopy  ( Kobe Convention center, Kobe Japan )   2013.8 

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  • Water migration dynamics studied by picosecond time-resolved IR spectroscopy Invited

    Masaaki Fujii

    The XVIth International Conference on Time-Resolved Vibrational Spectroscopy (TRVS 2013)  ( Beppuwan Royal Hotel, Beppu, Oita, Japan )   2013.5 

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  • Resonant enhanced multiphoton ionization and its application to Laser-SNMS Invited

    Masaaki Fujii

    The Scientific International Symposium on SIMS and Related Techniques Based on Ion-Solid Interactions  ( 成蹊大学14号館、東京都武蔵野市 )   2013.4 

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  • Water Migration Dynamics Studied by Picosecond Time-Resolved IR Spectroscopy Invited

    Masaaki Fujii

    Workshop on Structure and Dynamics of Water in Gas, Liquid and Solid Phases  ( Dr. Poe Lecture Hall, Institute of Atomic and Molecular Sciences, Academia Sinica, Taipei, Taiwan )   2012.11 

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  • Watching Water Migration around a Peptide Bond - Picosecond Time Resolved IR Spectroscopy on Acetanilide-Water Clusters Invited

    Masaaki Fujii

    Research Seminar in School of Chemistry  ( School of Chemistry, The University of Manchester, UK )   2012.10 

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  • 単一微粒子内部構造解析装置による越境汚染微粒子の起源・履歴解明の高精度化 Invited

    藤井 正明

    日本分析化学会第61年会  ( 金沢大学角間キャンパス、石川県金沢市 )   2012.9 

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  • Conformational study on neurotransmitters by laser-desorption supersonic jet spectroscopy Invited

    Masaaki Fujii

    Annual Meeting on Photochemistry 2012 (2012光化学討論会)  ( Tokyo Institute of Technology, Tokyo, Japan (東京工業大学 大岡山キャンパス、東京都目黒区大岡山) )   2012.9 

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  • レーザーイオン化SIMSによるディーゼル微粒子分析

    三澤健太郎, 坂本哲夫, 藤谷雄二, 藤井正明

    日本分析化学会年会講演要旨集  2012.9 

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  • B-5-98 Multi-Beam Directivity Control for Large-Scale Antenna Array

    Fujii Masaaki

    Proceedings of the Society Conference of IEICE  2012.8  The Institute of Electronics, Information and Communication Engineers

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  • Why a soft molecule work as a key - Conformational study on neurotransmitters by laser spectroscopy Invited

    Masaaki Fujii

    s?minaire au laboratoire PIIM  ( Universit? d'Aix-Marseille, Marseille, France )   2012.7 

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  • 単一微粒子測定装置による越境微粒子の内部構造解明 Invited

    藤井 正明

    酸性雨問題研究会、第37回酸性雨問題研究会シンポジウム  ( 慶應義塾大学、三田キャンパス、東京都港区三田 )   2012.6 

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  • Ionization-induced dynamics in solvated clusters studied by picosecond time-resolved IR spectroscopy: Monitoring a migrating solvent Invited

    Masaaki Fujii

    Seminar der Abteilung Molek?lphysik  ( Fritz-Haber-Institut der Max-Planck-Gesellschaft, Germany )   2012.6 

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  • Toward Understanding of Molecular Recognition System in Neurotransmission ? Laser Desorption Spectroscopy on Catecholamines and Development of Super-Resolution IR Microscopy Invited

    Masaaki Fujii

    Chemistry Department Seminar, Ajou University  ( Department of Chemistry, Ajou University, Korea )   2012.2 

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  • Toward Understanding of Molecular Recognition System in Neurotransmission ? Laser Desorption Spectroscopy on Catecholamines and Development of Super-Resolution IR Microscopy Invited

    Masaaki Fujii

    Chemistry Department Seminar, Chungbuk National University  ( Department of Chemistry, Chungbuk National University, Korea )   2012.2 

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  • Water migration dynamics in ionic clusters Invited

    Masaaki Fujii

    Gordon Research Conferences: Molecular and Ionic Clusters 2012  ( Four Points Sheraton / Holiday Inn Express, Ventura, CA, USA )   2012.2 

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  • 3A0913 Observation of air pollutants with filter pack attached three size segregation of aerosol (II)(1 Space-3 Regional environment/5 Substance-4 fibrous material/2 Method-4 data analysis,General Presentations)

    MURANO Kentaro, TAKAMI Akinori, FUJII Masaaki

    2012 

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    Other Link: http://search.jamas.or.jp/link/ui/2013114271

  • 2E0926 Structure Analysis of Fine Particles by High Resolution TOF-SIMS(1 Space-5 East Asia,General Presentations)

    MAYAMA Norihito, MIURA Yusuke, YOSHINO Ayako, MISAWA Kentaro, SAKAMOTO Tetsuo, TAKAMI Akinori, HATAKEYAMA Shiro, BANDOW Hiroshi, MURANO Kentaro, FUJII Masaaki

    2012 

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  • 2E1000 A process study for fine particles based on the SIMS analysis(1 Space-5 East Asia,General Presentations)

    TAKAMI Akinori, MAYAMA Norihito, SAKAMOTO Tetsuo, OHISHI Kenji, IREI Satoshi, MIYOSHI Takao, MURANO Kentaro, HATAKEYAMA Shiro, YOSHINO Ayako, BANDOW Hiroshi, SADANAGA Yasuhiro, MISAWA Kentaro, FUJII Masaaki

    2012 

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  • 2E1013 Characteristics of the air masses arrived at Fukue during the intensive observational campaigns inferred from NOy, other gaseous pollutants, and trajectory analyses(1 Space-5 East Asia,General Presentations)

    BANDOW Hiroshi, MASUI Yoshihiko, YUDA Hideki, SADANAGA Yasuhiro, YONEMURA Seiichiro, HATAKEYAMA Shiro, MURANO Kentaro, TAKAMI Akinori, SAKAMOTO Tetsuo, MISAWA Kentaro, FUJII Masaaki

    2012 

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  • 2E0939 Structural Analysis of Environmental Particles Using Laser Ionization/TOF-SIMS(1 Space-5 East Asia,General Presentations)

    MISAWA Kentaro, MAYAMA Norihito, OHISHI Kenji, SAKAMOTO Tetsuo, TAKAMI Akinori, MURANO Kentaro, YOSHINO Ayako, HATAKEYAMA Shiro, BANDOW Hiroshi, FUJII Masaaki

    2012 

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  • 神経伝達物質のレーザー蒸発気相分光−コンフォーメーションと分子認識 Invited

    藤井 正明

    分子アンサンブル2011シンンポジウム  ( 理化学研究所RIBF棟2階会議室、埼玉県和光市 )   2011.11 

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  • 生体分子の気相分光法の開発と分子認識機構へのアプローチ Invited

    藤井 正明

    共同利用研究 分子研研究会「実験と理論による高次分子システムの機能発現の分子論的理解」  ( 岡崎コンファレンスセンター・小会議室、愛知県岡崎市 )   2011.11 

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  • Structural Flexibility of Catecholamines Studied by Laser Desorption Supersonic Jet Laser Spectroscopy Invited

    藤井 正明

    CLUPS Seminar  ( Centre Laser Universit? Paris Sud 11, France )   2011.10 

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  • 生体分子の気相分光法の開発と分子認識機構へのアプローチ Invited

    藤井 正明

    日本化学会第91春季年会  ( 神奈川大学、神奈川県横浜市 )   2011.3 

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  • ZGP/PPLN/色素レーザーによる中赤外波長可変レーザーを用いた超音速分子線レーザー分光 Invited

    藤井 正明

    第4回光材料・応用技術研究会  ( 機械振興会館、東京都港区芝公園 )   2011.3 

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  • 高次分子システム研究のためのバーチャル研究所(高次分子システム研究所) Invited

    藤井 正明

    学協会連携分子研研究会「物理化学・生物化学の更なる発展のための提案と方策」  ( 分子科学研究所、愛知県岡崎市 )   2011.3 

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  • レーザー蒸発気相分光による神経伝達物質のコンフォーメーションと分子認識 Invited

    藤井 正明

    分子アンサンブル2010シンポジウム  ( 理化学研究所和光本所鈴木梅太郎ホール、埼玉県和光市 )   2010.11 

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  • ZGP/PPLN/色素レーザーによる中赤外波長可変レーザーを用いた超音速分子線レーザー分光 Invited

    藤井 正明

    日本光学会年次学術講演会、Optics & Photonics Japan 2010  ( 中央大学駿河台記念館、東京都千代田区神田駿河台 )   2010.11 

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  • ZGP/PPLN/色素レーザーによる中赤外波長可変レーザーを用いた超音速分子線レーザー分光

    宮崎充彦, 斎川次郎, 石月秀貴, 平等拓範, 藤井正明

    Optics &amp; Photonics Japan講演予稿集  2010.11 

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  • Ionization induced dynamics of PhOH…Ar clusters Invited

    Masaaki Fujii

    International Symposium "frontiers in Photon Science"  ( photon Science Institute, The University of Manchester, England )   2010.10 

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  • 過般型レーザーイオン化分析装置による自動車排出ガス中の有害有機物リアルタイム評価法の研究 Invited

    藤井 正明

    JRTT基礎的研究成果発表会  ( 発明会館ホール、東京都港区虎ノ門 )   2010.9 

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  • Ionization-induced site-switching in phenol-Rg clusters Invited

    Masaaki Fujii

    Special Seminar, Institut f?r Optik und Atomare Physik, TU Berlin  ( Institut f?r Optik und Atomare Physik, Technische Universit?t Berlin, Berlin )   2010.6 

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  • Real-time observation of photo-induced conformational dynamics in benzene dimer by picosecond time-resolved pump-probe spectroscopy

    Masaaki Fujii

    ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY  2010.3 

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  • 収束イオンビーム/レーザーイオン化法による単一微粒子の履歴解析装置 Invited

    藤井 正明

    先端計測分析技術・機器開発事業5周年記念シンポジウム  ( 日本科学未来館、東京都江東区 )   2009.12 

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  • Gas Phase Spectroscopy of Neurotransmitters and their Relevant Molecules Invited

    Masaaki Fujii

    The Second Asian Spectroscopy Conference  ( Seoul National University, Seoul, South Korea )   2009.12 

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  • FIB‐TOF‐SIMS/SNMSによる石炭灰単一微粒子内元素分布の観察

    林俊一, 久保田直義, 石月秀貴, 平等拓範, 石垣直也, 東條公資, 井戸豊, 坂本哲夫, 藤井正明

    日本分析化学会年会講演要旨集  2009.9 

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  • Developments of 2-color IR super-resolution microscopes and their applications to cells Invited

    Masaaki Fujii

    International symposium of Post-Silicon Materials and Devices Research Alliance Project  ( Ichou Kaikan, Osaka University, Osaka, Osaka )   2009.9 

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  • Real time observation of excited state hydrogen transfer reaction in phenol-(NH3)(n) (n=4, 5) clusters by ps time resolved infrared spectroscopy

    Mitsuhiko Miyazaki, Shun-ichi Ishiuchi, Makoto Sakai, Masaaki Fujii

    ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY  2009.8 

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  • レーザーイオン化による高感度リアルタイム分析 Invited

    藤井 正明

    レーザー学会 第10回「マイクロ固体フォトニクス専門委員会」  ( 岡崎コンファレンスセンター、愛知県岡崎市 )   2009.3 

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  • Development of a tunable mid-IR light source based on difference frequency generation in ZnGeP2 and its application to IR spectroscopy of jet-cooled species

    MIYAZAKI MITSUHIKO, SAIKAWA JIRO, FUJII MASAAKI, ISHIZUKI HIDEKI, TAIRA TAKUNORI

    日本化学会講演予稿集  2009.3 

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  • Strategic prolems in photon science (Chair) Invited

    Masaaki Fujii

    Discussion Foresight Workshop "International Collaborations in Photon Science"  ( Pisa, Tuscany, Italy )   2009.3 

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  • 車の排ガスのその場高感度分析 Invited

    藤井 正明

    第3回四大学連合文化講演会  ( 一橋記念講堂、東京都千代田区 )   2008.11 

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  • 分子クラスターから細胞に至る分子認識系の光励起ダイナミクスと素過程解明 Invited

    藤井 正明

    特定領域研究「高次系分子科学」第2回公開シンポジウム  ( 大阪大学すいたキャンパス、コンベンションセンター、大阪府吹田市 )   2008.11 

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  • 燃焼排ガス中有害微量物質の計測技術 Invited

    藤井 正明

    第2回統合研究院「環境プロジェクト・ワークショップ」低リスク社会の実現に向けて  ( 東京工業大学大岡山キャンパス、東京都目黒区 )   2008.10 

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  • クラスター内反応の時間分解赤外分光 Invited

    藤井 正明

    第2回分子科学討論会  ( 福岡国際会議場、福岡県福岡市 )   2008.9 

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  • Hydrogen-Bonded Networks (Overview) Invited

    Masaaki Fujii

    Gordon Research Conferences: Molecular and Ionic Clusters 2008  ( Centre Paul Langevin, Aussois, France )   2008.9 

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  • Real-time observation of ionization induced site switching in phenol-rare gas clusters by picosecond time-resolved IR dip spectroscopy Invited

    Masaaki Fujii

    The 236th ACS National Meeting  ( Loews Philadelphia Hotel, Philadelphia, Pennsylvania, USA )   2008.8 

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  • PHYS 49-Real-time observation of ionization induced site switching in phenol-rare gas clusters by picosecond time-resolved IR dip spectroscopy

    Masaaki Fujii

    ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY  2008.8 

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  • レーザー多光子イオン化による高感度リアルタイム環境分析の最前線 Invited

    藤井 正明

    2008年レーザー学会東京支部セミナー  ( 慶應義塾大学矢上キャンパス、神奈川県横浜市 )   2008.7 

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  • リアルタイム環境分析法と単一微粒子の履歴解析装置 Invited

    藤井 正明

    光産業技術振興協会マンスリーセミナー  ( 光産業技術振興協会、東京都文京区 )   2008.6 

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  • 2波長レーザー分光法に基づく超解像光学顕微鏡の開発 Invited

    藤井 正明

    京都工芸繊維大学機器分析センター市民講座・先端技術講座  ( 京都工芸繊維大学、京都府京都市 )   2008.3 

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  • オキシダント生成物質の高感度リアルタイム計測 Invited

    藤井 正明

    第1回統合研究院「環境プロジェクト・ワークショップ」  ( 東京工業大学大岡山キャンパス百年記念館、東京都目黒区 )   2008.2 

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  • Ionization induced isomerization dynamics in aromatic clusters Invited

    Masaaki Fujii

    Gordon Research Conference: Photoions, Photoionizaton & Photodetachment  ( Il Ciocco, Lucca(Barga), Italy )   2008.1 

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  • State-selective dynamics of ecited state hydrogen transfer in phenol / ammonia clusters studied by picosecond time-resolved three-colour spectroscopy Invited

    Masaaki Fujii

    Photon Science Institute Seminar Series 2007/2008  ( The photon Science Institute, University of Manchester, Manchester, UK )   2008.1 

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  • レーザー多光子イオン化による環境分析の最前線 Invited

    藤井 正明

    (財)光産業技術振興協会平成19年度「多元技術融合光プロセス研究会」第4回研究交流会  ( 機械振興会館、東京都港区 )   2008.1 

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  • 1E1700-1 Molecular-selective and real-time analysis of unregulated pollutants in automotive exhausts using the laser multi-photon ionization technique(Measurement Methods and the Exhaust State Understanding of Unregulated Harmful Substances Exhausted from Vehicles,5. Automobile Environment Subcommittee,Subcommittee Meetings)

    MATSUMOTO Jun, MISAWA Kentaro, ISHIUCHI Shunichi, FUJII Masaaki, HAYASHI Shun-ichi, SUZAKI Kotaro, YAMADA Hiroyuki, GOTO Yuichi

    2008 

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  • 超解像レーザー分光法による極小空間ダイナミクス評価法の開発 Invited

    藤井 正明

    ポストシリコン物質・デバイス創製基盤技術アライアンス成果報告会  ( 東北大学片平キャンパス、さくらホール、宮城県仙台市 )   2007.12 

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  • Real-time Obscrvation of Excited State Hydrogen transfer in H-bonded Clusters by UV-IR-UV Picoscond Time-resolved IR Spectroscopy Invited

    Masaaki Fujii

    Molecular Science and Chemical Biology of Biomolecular Function  ( Okazaki Conference Center, Okazaki, Japan )   2007.11 

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  • Super-resolution Infrared Microscopy based on Two-color Double-resonant Spectroscopy Invited

    Masaaki Fujii

    The 20th International Conference on Raman Spectroscopy (ICORS 2006)  ( Pacific Convention Plaza Yokohama, Yokohama, Japan )   2006.8 

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  • Vibrational Relaxation of 7-Azaindole Dimer in Gas and Solution Studied by Picosecond Time-Resolved IR-UV Double Resonance Spectroscopy Invited

    Masaaki Fujii

    International Workshop on Time-Resolved Spectroscopy (IWTS-2006)  ( RIKEN, Wako, Japan )   2006.8 

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  • Two-Color Picosecond Time-resolved Infrared Super-resolution Microscopy and its Application to Cell Invited

    Masaaki Fujii

    KAKENHI International Symposium on “Molecular Nano Dynamics”  ( Osaka University Convention Center, Osaka, Japan )   2006.6 

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  • Picosecond time-resolved IR spectroscopy on intracluster reactions Invited

    Masaaki Fujii

    Sendai International Symosium on Molecular Cluster Spectroscopy  ( Sendai International Center, Sendai,Japan )   2006.5 

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  • Real-time observation of ionization induced site switching in aromatic clusters Invited

    Masaaki Fujii

    Gordon Research Conference, Molecular & Ionic Clusters  ( Crowne Plaza Ventura, CA, USA )   2006.2 

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  • Excited state hydrogen transfer in phenol/ammonia clusters studied by nanosecond hole burning and picosecond pump-probe spectroscopy by Proton Trnsfer/Transport of H-Bonded Solids, Liquids, Clusters and Interfaces (#40) [1A] Invited

    Masaaki Fujii

    The 2005 International Chemical Congress of Pacific Basin Societies (PACIFICHEM 2005)  ( Honolulu, Hawaii, USA )   2005.12 

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  • Infrared dip spectroscopy of phenol-argon(1:2)cluster cation: lionization induced site switching and its dynamics by Frontiers in Structural and Functional Studies of Atomic and Molecular Clusters and Nano-particles (#110) [3A] Invited

    Masaaki Fujii

    The 2005 International Chemical Congress of Pacific Basin Societies (PACIFICHEM 2005)  ( Honolulu, Hawaii, USA )   2005.12 

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  • Overtone spectroscopy as a probe to distinguish rotational isomers by Vibrational Overtones: Spectroscopy, Dynamics and Environmental Invited

    Masaaki Fujii

    The 2005 International Chemical Congress of Pacific Basin Societies (PACIFICHEM 2005)  ( Honolulu, Hawaii, USA )   2005.12 

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  • Vibrational relaxation of 7-azaindole dimer studied by picosecond time-resolved transient fluorescence detected IR spectroscopy Invited

    Masaaki Fujii

    ICONO/LAT 2005 Conference  ( Pribaltiyskaya Hotel, St. Petersburg, Russia )   2005.5 

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  • Development of Real Time Monitoring Instrument for Trace Gas Analysis based on Jet-REMPI Technique : Development of High Sensitive Daly detector

    HAYASHI Shun-ichi

    2005.3 

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  • Picosecond Time-resolved Infrared Spectra of Photochemically Reactive Clusters Invited

    Masaaki Fujii

    International Symposium on Bio-conjugated Materials and Molecular Devices  ( Cornell University, Ithaca, NY, USA )   2004.12 

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  • IR Dip Spectroscopy of the Phenol -Ar2 Cluster Cation: When does Ar Move Invited

    Masaaki Fujii

    Gordon Research Conference on Molecular and Ionic Clusters  ( Centre Paul Langevin, Aussois, France )   2004.9 

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  • Development of Real Time Monitoring Instrument for Trace Gas Analysis based on Jet-REMPI Technique

    HAYASHI Shun-ichi

    2004.9 

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  • Pico-second Time-Resolved IR spectroscopy of Solvated Clusters in Gas and Solution Invited

    Masaaki Fujii

    Seminaire du Laboratoire, Laboratoire de Photophysiqne Moleculaire  ( Universit? Paris-Sud, France) )   2004.3 

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  • 4-color Hole Burning Spectroscopy of Phenol/Ammonia Clusters Invited

    Masaaki Fujii

    Seminaire du Laboratoire, Laboratoire de Photophysiqne Moleculaire  ( Universit? Paris-Sud, France) )   2004.3 

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  • Picosecond time-resolved IR spectroscopy on 7-azaindole dimer-Bridge from cluster to solution Invited

    Masaaki Fujii

    International Symposium on Functional Clusters and Cluster-Based Nano-Materials  ( Okazaki Conference Center, Okazaki )   2003.12 

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  • Picosecond time-resolved IR spectroscopy of solvated cluster in gas and solution Invited

    Masaaki Fujii

    Japan-Korea Joint Seminar on Frontiers of Advanced Molecular Science: Spectroscopy of Ultra-Resolution in Time, Space and Energy  ( RIKEN, Wako, Japan )   2003.11 

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  • Hydrogen Atom Transfer in Molecular System Invited

    Masaaki Fujii

    New Frontiers in Chemical Dynamics and Femtochemistry ? An international symposium to mark the opening of the York Centre for Laser Spectroscopy and Photochemistry (YCLS)  ( Department of Chemistry, The University of York, York, UK )   2003.10 

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  • Picosecond time-resolved infrared spectra of photochemically reactive clusters Invited

    Masaaki Fujii

    XXIst International Conference on Photochemistry  ( Nara-ken New Public Hall, Nara, Japan )   2003.7 

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  • Development of Trace Gas Analysis in High Temperature Furnace Based on Jet-REMPI Instrument

    HAYASHI Shun-ichi

    2003.3 

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  • Ion Detected Molecular Vibration and its Dynamics Invited

    Masaaki Fujii

    Department and Laser and Applications Research Theme Seminar  ( Otago University, Dunedin, New Zealand )   2002.11 

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  • Pico-second Time-Resolved IR Spectroscopy on Photochemically Reactive Clusters Invited

    Masaaki Fujii

    Laser and Applications Research Theme Meeting  ( Otago University, Dunedin, New Zealand )   2002.11 

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  • Pico-second Time-Resolved IR Spectroscopy on Photochemically Reactive Clusters Invited

    Masaaki Fujii

    Kobe International Symposium 2002: Molecular Structure and Dynamics  ( Rokko Oriental Hotel, Kobe, Japan )   2002.10 

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  • Pico-second Time-Resolved IR Spectroscopy on Photochemically Reactive Clusters Invited

    Masaaki Fujii

    IMS Research Symposium “Current Status and Prospects of Dynamics of Photon, Electron and Heavy-Particle Collisions”  ( Okazaki Conference Center, Okazaki, Japan )   2002.7 

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  • Pico-second Time-Resolved IR Spectroscopy on photochemically Reactive Clusters Invited

    Masaaki Fujii

    Gordon Research Conference on Molecular Ionic Cluster  ( Ventura, Calfornia, USA )   2002.1 

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  • Hydrogen transfer in photo-excited phenol / ammonia clusters by UV-IR-UV ion dip spectroscopy and ab initio MO calculations II : Vibrational Transitions

    J. Chem. Phys.  2002 

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  • Hydrogen transfer in photo-excited phenol / ammonia clusters by UV-IR-UV ion dip spectroscopy and ab initio MO calculations I : Electronic Transitions

    J. Chem. Phys.  2002 

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  • Spectroscopic study of a mixed cluster of 1-naphthol dimer and ammonia ? Promotion of dimer formation supported by ammonia Invited

    Masaaki Fujii

    COE Satellite Meeting on Solvated Cluster  ( Okazaki Conference Center, Okazaki, Japan )   2001.10 

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  • Excited state hydrogen transfer in phenol / ammonia clusters studied by picosecond time-resolved IR dip spectroscopy Invited

    Masaaki Fujii

    COE Satellite Meeting on Solvated Cluster  ( Okazaki Conference Center, Okazaki, Japan )   2001.10 

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  • Structure & Dynamics of Phenol / Naphthol Aqueous Cluster Studied by Laser Spectroscopy Invited

    Masaaki Fujii

    Okazaki COE Conference on Reaction in Aqueous Media  ( Okazaki Conference Center, Okazaki, Japan )   2001.10 

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  • Structure and Solvation of Doubly Hydrogen-Bonded Molecular Pair Studied by IR Dip Spectroscopy Invited

    Masaaki Fujii

    International Symposium of the Volkswagenstiftung on Isolated Molecules of Biological Interest  ( Schloss Mickelen, D?sseldorf, Germany )   2001.6 

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  • Hydrogen Transfer Reaction in a Phenol / Ammonia Cluster Studiedby UV-IR?UV Dip Spectroscopy Invited

    Masaaki Fujii

    10th International Conference on Time-Resolved Vibrational Spectroscopy  ( Okazaki Conference Center, IMS, Japan )   2001.3 

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  • PFIーZEKE Spectroscopy of Meta?substituted Phenol Derivatives Aqueous Cluster ? rotational isomer and large amplitude motions in cluster cation Invited

    Masaaki Fujii

    IMS Mini-Sympoium “Photoionization”  ( Institute for Molecular Science, Okazaki JAPAN )   2001.3 

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  • Structure of 1-Naphthol-Water Clusters Studied by IR Dip Spectroscopy and Ab Initio Molecular Orbital Calculation

    J. Phys. Chem. A,  1998 

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  • Rotational Isomers in Fluorophenols studied by IR-UV Double Resonance spectroscopy-Overtone spectroscopy of Water Cluster.

    蔀洋司, 石内俊一, 藤井正明

    分子構造総合討論会講演要旨集  1996 

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  • Higher Vibrational States of Jet-cooled Phenol Studied by Nonresonant Ionization Detected IR Spectroscopy.

    石内俊一, 蔀洋司, 高沢健, 藤井正明

    化学反応討論会講演要旨集  1996 

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  • IR-UV Double Resonance Spectrum of Phenol-Water Cluster-OH Stretching Overtone.

    石内俊一, 蔀洋司, 藤井正明, 岩崎純史, 江幡孝之, 三上直彦

    分子構造総合討論会講演要旨集  1996 

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Awards

  • フンボルト賞

    2019.6   アレクサンダー・フォン・フンボルト財団   分子クラスターのピコ秒時間分解振動分光並びに気相分光の生体分子システムへの応用

    藤井 正明

  • 第9回(2018年度)分子科学会学会賞

    2018.9   分子科学会   気相多波長レーザー分光法の開発と複雑分子系への応用

    藤井 正明

  • 日本分光学会賞

    2015.6   日本分光学会   先端的多色レーザー分光法の開発とその応用

    藤井 正明

  • 日本化学会第31回学術賞

    2013.11   日本化学会   多波長レーザー赤外分光法の開発と気相クラスター内ダイナミクスの直接観測

    藤井 正明

  • 大気環境学会論文賞学術部門

    2011.9   大気環境学会   レーザー多光子イオン化法を用いたモード走行中自動車排気ガスに関する個別成分のリアルタイム分析とOHラジカル反応性の評価、大気環境学会誌、45(5), 205-211 (2010)

    松本 淳, 三澤 健太郎, 石内 俊一, 藤井 正明, 林 俊一, 田中 光太郎, 山田 裕之, 後藤 雄一

  • 第40回市村学術賞貢献賞

    2008.4  

  • 手島記念研究論文賞

    2007.2  

  • 分子科学奨励森野基金

    1996  

  • Morino Foundation for Molecular Science

    1996  

  • 山下太郎学術奨励賞

    1992  

  • 日本化学会第41回進歩賞

    1992  

  • Award by Yamashita Memorial Foundation for Science and Engineering

    1992  

  • Award for the Young Chemist, Chemical Society of Japan

    1992  

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Research Projects

  • ESI冷却イオントラップ分光法によるアドレナリン受容体の分子認識機構の解明

    Grant number:20H00372  2020.4 - 2024.3

    日本学術振興会  科学研究費助成事業 基盤研究(A)  基盤研究(A)  東京工業大学

    藤井 正明

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    Grant amount: \44720000 ( Direct Cost: \34400000 、 Indirect Cost: \10320000 )

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  • 冷却イオントラップ分光による天然変性タンパク質複合体へのボトムアップアプローチ

    Grant number:20K20446  2020.4 - 2023.3

    日本学術振興会  科学研究費助成事業  挑戦的研究(開拓)  東京工業大学

    藤井 正明, 石内 俊一, 平田 圭祐, 宮崎 充彦

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    Grant amount: \26000000 ( Direct Cost: \20000000 、 Indirect Cost: \6000000 )

    1)YEMPS-ドーパおよびノルアドレナリン複合体のの冷却イオントラップ赤外分光
    天然変性タンパク質であるα-シヌクレインのドーパミン結合部位にはドーパミン誘導体であるドーパやノルアドレナリンも結合することが分かっている。そこで,YEMPS配列の部分ペプチドAc-YEMPS-NHMe(以降YEMPS)とプロトン付加ドーパおよびプロトン付加ノルアドレナリンの複合体をエレクトロスプレーで気相中に取り出し,冷却イオントラップ中の極低温下で赤外スペクトルを測定した。ドーパミン複合体の場合と同様に,プロトン化アミノ基がYEMPSと優先的に結合するのを阻害するために,18C6クラウンエーテルでプロトン化アミノ基を包接保護した。その結果,これら2つの複合体でも,YEMPSとカテコールOH基が結合した構造を形成させることができた。YEMPSの2 次構造を明らかにするために,ペプチド結合のC=O伸縮振動(amide-I)を測定したところ,1650 cm-1にバンドが観測され,α-ヘリックス構造が形成されていることが確認された。従って,ドーパミンと同様に,ドーパやノルアドレナリンも複合体形成によりYEMPSにヘリックス構造を誘起することが分かった。
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    2)異性体分離したスペクトル測定法の検討
    クラウンエーテルを付加した複合体ではUVスペクトルの測定が困難なため,UVスペクトルを用いた異性体分離ができない。そこで,IRスペクトルのみを用いて異性体分離したスペクトルを測定する方法であるIR-IR dip分光法を用いる必要があるが,これを実現するためには,1本目のIR照射と2本目のIR照射の間で質量分析する必要があり,現有装置では困難である。そのため,冷却イオントラップの後の線形飛行時間方質量分析器を2段の質量分析器に改造する必要があり,最適な方法をイオン軌道シミュレーションを用いて確立した。

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  • 冷却イオントラップ分光による天然変性タンパク質複合体へのボトムアップアプローチ

    Grant number:19H05527  2019.6 - 2022.3

    日本学術振興会  科学研究費助成事業 挑戦的研究(開拓)  挑戦的研究(開拓)  東京工業大学

    藤井 正明, 宮崎 充彦, 石内 俊一

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    Grant amount: \26000000 ( Direct Cost: \20000000 、 Indirect Cost: \6000000 )

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  • Studying the Function of Soft Molecular Systems by the Concerted Use of Theory and Experiment

    Grant number:18H05201  2018.4 - 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)  Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)  Institute of Physical and Chemical Research

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    Grant amount: \3900000 ( Direct Cost: \3000000 、 Indirect Cost: \900000 )

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  • Understanding the electron-proton decoupling effect in the hydrogen/proton transfer reaction by electron-nucleus conjugated measurements

    Grant number:15H02157  2015.4 - 2019.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (A)  Grant-in-Aid for Scientific Research (A)  Tokyo Institute of Technology

    Fujii Masaaki

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    Grant amount: \44850000 ( Direct Cost: \34500000 、 Indirect Cost: \10350000 )

    In this project, a femtosecond time-resolved near infrared-ultraviolet spectroscopy on gas phase solvated clusters was developed, and this method was applied to the phenol-(ammonia)5 cluster to investigate the mechanism of the excited-state hydrogen transfer reaction.
    The reaction dynamics was composed of an electron transfer with ca. 350 fs and a proton transfer with ca. 20 ps. This result means that the electron and the proton transfer processes proceeds in totally different time-scales, i.e. there is decoupling between the electron and the proton though this reaction is a hydrogen transfer reaction.
    The decoupling mechanism stems from a strong coupling of the pi-sigma* state with a charge-separated state. Solvation strongly affects the stability of the charge separated state and also changes the degree of the decoupling.

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  • Chiral molecular recognition in amino acid ionic clusters

    Grant number:16F16035  2016.7 - 2018.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for JSPS Fellows  Grant-in-Aid for JSPS Fellows  Tokyo Institute of Technology

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    Grant amount: \2300000 ( Direct Cost: \2300000 )

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  • Support for International Activities of Studying the Function of Soft Molecular Systems by Concerted Use of Theory and Experiment

    Grant number:15K21740  2015.11 - 2018.3

    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)  Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)  Institute of Physical and Chemical Research

    TAHARA Tahei, MORITA Akihiro, HAYASHI Shigehiko, TAKAHASHI Satoshi, MURAHASHI Tetsuro, NAKANISHI Takashi

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    Grant amount: \20800000 ( Direct Cost: \16000000 、 Indirect Cost: \4800000 )

    In the "soft molecular systems" project, we organized a group that supports international activities of members, and conducted two programs. The first program aims at sending young researchers abroad. We started this program at the beginning of the "soft molecular systems" project, 2 years before this grant project (15K21740) started. We requested young researchers not only to participate in the conference abroad, but also to visit laboratories for discussion. They are requested to report their activities in Newsletter. Using this grant, we sent 20 young researchers abroad, whose active communications with foreign researchers can be seen in Newsletter. The second program supported international collaboration of members, for which we sent 6 researchers abroad, and invited 7 researchers from abroad. As a result, 6 papers have been published in high-impact journals, including Nat. Commun. and PNAS. The two programs thus contributed the success of the "soft molecular systems" project.

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  • Studying the Function of Soft Molecular Systems by Concerted Use of Theory and Experiment

    Grant number:25104001  2013.6 - 2018.3

    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)  Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)  Institute of Physical and Chemical Research

    TAHARA Tahei

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    Grant amount: \115440000 ( Direct Cost: \88800000 、 Indirect Cost: \26640000 )

    The "soft molecular systems" project produced very high research results, represented by 1066 publications of papers. Of these, 56 are the papers about the result of joint research, which manifests that we could realize the research combining theory, measurement and creation through the efforts like science camps, workshop etc. The project members gave 456 invited talks including 13 plenary lectures in the International conferences, and we organized a special issue on complex molecular systems research in Phys. Chem. Chem. Phys. that is a top journal published by Royal Society of Chemistry, which demonstrates our strong appeals in international community. We trained young researchers, and 73 people got jobs including university professors, associate professors and assistant professors. Through these, we have created a new scientific field of molecular science of complex systems and cross - disciplinary research networks at a high level exceeding expectations.

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  • Structural diversity and hydration dynamics of hydrogen bonding system studied by gas-phase spectroscopy

    Grant number:25104008  2013.6 - 2018.3

    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)  Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)  Tokyo Institute of Technology

    Fujii Masaaki

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    Grant amount: \89180000 ( Direct Cost: \68600000 、 Indirect Cost: \20580000 )

    Electrospray cryogenic ion trap spectrometer was developed, and applied to complexes of partial sequence of receptor proteins and several ligands to reveal their interactions at molecular level. In addition, hydration effects on their structures were clarified by using hydrated clusters in which number of water molecules and their orientation can be rigorously determined. Furthermore, Structures of alkali metal ion complexes of biomolecules were investigated by using isomer-selected infrared spectroscopy, and conformational specificity depending on the alkali metal ions was revealed. Through these results, we successfully demonstrated that precise spectroscopic studies on the interaction centers cut out from biomolecules, i.e., "bottom-up approach" is useful.

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  • Molecular Science for Supra Functional Systems - Development of Advanced Methods for Exploring Elementary Processes

    Grant number:19056014  2007 - 2012

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research on Priority Areas  Grant-in-Aid for Scientific Research on Priority Areas  Tokyo Institute of Technology

    FUJII Masaaki, SEKIYA Hiroshi, TAHARA Tahei, MIZUTANI Yasuhisa

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    Grant amount: \56400000 ( Direct Cost: \56400000 )

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  • Surface-assisted laser desorption/ionization mass analysis system with nano-scale surface modified sample substrate

    Grant number:21310072  2009 - 2011

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)  Grant-in-Aid for Scientific Research (B)  Hokkaido University

    YONEZAWA Tetsu, FUJII Masaaki, ISHIUCHI Shun-ichi, ARAKAWA Ryuichi, KAWASAKI Hideya

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    Grant amount: \18460000 ( Direct Cost: \14200000 、 Indirect Cost: \4260000 )

    Development of surface assisted LDI (SALDI) system used for analyses of low molecular compounds has been carried out. Dealloy process with electrochemical etching could successfully provide nanoporous platinum plate. The structure of nanopores strongly varied with the alloy composition. These plates were applied as SALDI-MS sample plate, desorption/ionization of organic compounds could not be detected. On the other hand, aggregated sample plate of semiconductor nanoparticles effectively

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  • Elementary process of molecular recognition from cluster to cell

    Grant number:19056002  2007 - 2011

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research on Priority Areas  Grant-in-Aid for Scientific Research on Priority Areas  Tokyo Institute of Technology

    FUJII Masaaki, SAKAI Makoto, ISHIUCHI Shun-ichi, HASHIMOTO Kenro, MISAWA Kentaro, MIYAZAKI Mitsuhiko

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    Grant amount: \83300000 ( Direct Cost: \83300000 )

    Various materials to increase the efficiency of laser desorption of nonvolatile biomolecules were explored. Gold nano particle and carbon black were concluded as the best materials. The development enables us to determine structures of catecholamines and related molecules systematically by their UV and IR spectra. Picosecond time-resolved IR spectroscopy was applied to ionization triggered water migration dynamics in acetanilide-water system. This revealed details of the dynamics of single water molecule from the molecular point of view for the first time. Vibrational sum-frequency generation and optical microscope were combined to develop an IR super-resolution microscopy. 14 times higher spatial resolution than the IR diffraction limit was achieved and internal structures of cells were successfully visualized.

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  • Molecular Science for Supra Functional Systems ? Development of Advanced Methods for Exploring Elementary Process

    Grant number:477  2007 - 2011

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research on Priority Areas  Grant-in-Aid for Scientific Research on Priority Areas  Tokyo Institute of Technology

    FUJII Masaaki

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  • 収束イオンビ-ム/レーザーイオン化法による単一微粒子の履歴解析装置

    2004.10 - 2010.3

    科学技術振興機構  先端計測分析技術・機器開発プログラム 

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  • Two-Color Picosecond Time-resolved Infrared Super-resolution Microscopy and its Application to Cell

    Grant number:16072207  2004 - 2006

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research on Priority Areas  Grant-in-Aid for Scientific Research on Priority Areas  Tokyo Institute of Technology

    FUJII Masaaki, SAKAI Makoto

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    Grant amount: \37300000 ( Direct Cost: \37300000 )

    The IR microscopy based on the transient fluorescence detected IR spectroscopy is capable of breaking the diffraction limit. Briefly, a tunable IR light is co-linearly introduced with a visible light of which the wavelength is fixed to slightly longer than the visible absorption band. If the frequency of the IR light does not resonant to the vibrational level, no fluorescence will appear because the visible light does not match the absorption band. When the IR frequency is resonant to the vibrational level, the vibrationally excited molecule generated by the IR excitation can absorb the visible light, and gives the transient fluorescence. Here, the transient fluorescence due to IR excitation appears only the spatial region where both IR and visible lights are overlapped. This overlapped region can be smaller than the diffraction limit of IR light and its size is improved to the diffraction limit of visible light.
    In this work, we succeeded in observation of the transient fluorescence image that is smaller than the diffraction limit in rhodamine 6G/chloroform-d1 solution. We also reported the application of an IR super-resolution microscopy to a rhodamine-6G doped fluorescence bead as a microscopic target. The transient fluorescence image of a 15-μm-diameter bead is clearly observed, and the observed spatial resolution of TFD-IR image is 6.8 μm FWHM. Since the theoretical diffraction limit for the IR light is about 16.6 μm FWHM, it is clear that the spatial resolution of TFD-IR image is smaller than the IR diffraction limit, and the super-resolution is achieved for IR microscopy. In addition, the spatial resolution is determined only by visible light, not IR light. By using this infrared super-resolution microscopy, we visualized the structure and vibrational relaxation dynamics in Arabidopsis root cells.

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  • Spectroscopy and Dynamics of Reactive Cluster Studied by Two-Color Laser Vibrational Spectrosopy and Quantum Chemical Calculation

    Grant number:11304043  1999 - 2001

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (A)  Grant-in-Aid for Scientific Research (A)  Okazaki National Research Institutes Institute for Molecular Science

    FUJII Masaaki, SAKAI Makoto, HASHIMOTO Kenro

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    Grant amount: \39300000 ( Direct Cost: \38100000 、 Indirect Cost: \1200000 )

    Reflectron mass-spectrometer with reactive cluster source was designed and built succes sfully. Originally developed IR-UV multi-resonance spectroscopies were combined with this cluster source, and vibrational spectra of reactive clusters have been measured not only in the ground- state but also in the excited electronic states. The most clear example is the study on photochemistry in phenol-ammonia clusters. The vibrational transitions of the photochemical reaction products in phenol-(NH_3)_3 have been measured by UV-IR-UV three-color dip spectroscopy. Two sharp bands at -3200 cm^-1 and a broad band in the region 2700-31 00 cm^-1 are observed. The spectrum is clearly different from that of the cluster in S_(1) and also largely different from the IR spectrum of NH_4+(NH_3)_2. This suggests that hydrogen transfer occurs in electronically excited phenol-(NH_3)_3. Evidence of hydrogen trans fer hasalso been found in phenol-(NH_3)_4 based on the mass spectrum and the IR dip spectrum of the cluster. In addition, IR spectra of solvated cluster of naphthol, carbazole, 7-azaindo!e and its dimer have been measured by IR-UV double resonance spectroscopies and their slruc lure have been determind^ based on the comparison to ab initio MO calculations. The re lation between the structure and photochemical properties have been discussed.

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  • Multi-color solid dye laser containing mixture of dye molecules.

    Grant number:11555010  1999 - 2001

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)  Grant-in-Aid for Scientific Research (B)  Chiba University

    OMATSU Takashige, IKETAKI Yoshinori, FUJII Masaaki, TATEDA Mitsuhiro

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    Grant amount: \11400000 ( Direct Cost: \11400000 )

    Dual-wavelength laser oscillation in solid dye laser based on a Nile-Blue and DCM molecules co-doped poly-methyl-methacrylate (PMMA) is presented.
    Laser dye molecules exhibit large gain and wide tunability in the visible region. Dye-mixture is a way to achieve multi-wavelength laser operation. In this work, the dye-mixture of DCM and Nile-Blue is investigated.
    The densities of the DCM and Nile-Blue molecules are O.1 g/l and O.1 g/l, respectively. Experimental fluorescence lifetime of 6.7ns was measured, while fluorescence lifetimes of 3ns and 2.4ns in DCM and Nile-Blue solid-dyes were measured, respectively. The extension of the lifetime in the solid-dye with mixture of DCM and Nile-Blue is induced by resonant energy transfer from DCM to Nile-Blue, because absorption-band of the Nile-Blue overlaps well with emission-band of the DCM. Laser cavity with a plane-parallel geometry was composed of an end-mirror with high reflectivity and an output mirror with reflectivity of 53 % in the region from 600nm to 700nm. Cavity length was 1.5 cm. The solid-dye with mixture of DCM and Nile-Blue was transversely pumped by a freqnency-doubled Q-switched Nd : YAG laser with pulse duration of 10ns at repetition rate of 2.5 Hz. In the case of the solid-dye with the mixture of DCM and Nile-Blue, dual-frequency laser operation at the wavelengths of 604nm and 671nm was achieved. By the doping of DCM, the lasing frequency shifts toward the blue. Efficient energy transfer from the DCM to the Nile-Blue induces the blue-shift of the lasing frequency.
    Experimental slope efficiencies of 1.6 % and 2.4 % were obtained with the wavelengths of 604nm and 671nm, respectively. Experimental laser threshold of 3mJ was obtained. On contrary, experimental slope efficiency of the Nile-Blue solid-dye without the doping of the DCM was as much as 1.0 %. The doping of the DCM improves well the lasing efficiency.

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  • Development of ionization detected infrared spectroscopy and its application to overtone spectroscopy of molecules and clusters

    Grant number:09440206  1997 - 1998

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)  Grant-in-Aid for Scientific Research (B)  Okazaki National Research Institutes, Institute for Molecular Science

    FUJII Masaaki, FUJII Masaaki

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    Grant amount: \14600000 ( Direct Cost: \14600000 )

    A new IR spectroscopy has been developed.This spectroscopy named nonresonant ionization detected IR spectroscopy (shortly, NID-IR) is a kind of IR- UV double resonance spectroscopy which detects a vibrationally excited molecule by selective ionization due to a UV laser.Because of the ionization detection, NID-IR spectroscopy has very high sensitivity in comparison to the traditional IR spectroscopy due to direct absorption.The NID-IR spectroscopy has been applied to various molecules such as phenol, naphthol and caged amine.The IR transition of these molecule has observed in a supersonic jet condition.In special, IR transition of jet cooled phenol has successfully been observed from 2400 cm-1 to 14000 cm-1.The spectrum shows clear vibrational structures due to the first to the forth quantum of the OH stretching, CH overtones and various combination vibrations.The vibrational frequency, auharmonicity, and the dissociation energy of the OH stretching mode has been measured.It is found that the band width of OH overtones has been decreasing with increase in vibrational quantum number.From the comparison to the calculated band shape assuming slow relaxation, it is concluded that the band shape is mainly determined by the broadening due to the intramolecular vibrational redistribution (IVR).The existence of a doorway state in IVR of phenol has been suggested from the deuterium effect on the band shape.

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  • 赤外-紫外二重共鳴分光法による水素結合両性クラスターの高振動状態の研究

    Grant number:09216219  1997    

    日本学術振興会  科学研究費助成事業 重点領域研究  重点領域研究  岡崎国立共同研究機構

    藤井 正明

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    Grant amount: \1200000 ( Direct Cost: \1200000 )

    IR Dip分光法を水素結合両性分子である7-アザインドール及びその水和クラスターに適用し、NH,OH振動の倍音準位の観測に成功した。6900cm^<-2>に観測されたバンドをNH伸縮振動の2倍音2υ_<NH>と帰属し、NH伸縮振動の基音の振動数3520cm^<-1>と合わせて振動数ω_0=3590cm^<-1>,非調和性ω_<0χ0>=-70cm^<-1>を得た。これにより解離エネルギーD_0=ω_0^2/4ω_<0χ0>=46000cm^<-1>と求めた。一方、7-アザインドール・(H_2O)_1クラスターに対しては6637cm^<-1>に観測されたDipをNH伸縮振動の2倍音υ_<NH>と帰属し7290cm^<-1>に観測されたDipをクラスター内の水の逆対称伸縮振動υ_3の2倍音と帰属した。これによりクラスター内のNH伸縮振動に対しω_0=3504cm^<-1>,ω_<0χ0>=-93cm^<-1>,解離エネルギーD_0=33000cm^<-1>と得た。水分子とのクラスター形成によりNH伸縮振動の解離エネルギーが13000cm^<-1>も低下していることが明らかになった。この値は同じ手法で測定したフェノールの水和による解離エネルギー安定化(9000cm^<-1>)よりもはるかに大きい値であり、水素結合両性分子が二つの水素結合を同時に形成して強固な水素結合を形成できることが明らかになった。さらに、プロトン移動反応活性になるS1電子励起状態の構造を調べるため、蛍光検出系を製作し、7-アザインドールと同じく電子励起により反応活性となる1-ナフトール及びその水和クラスターにUV-IR蛍光Dip分光法を適用した。この結果、電子励起状態での赤外吸収の観測に初めて成功し、クラスター構造の決定及びその反応性との関係を論じた。これらの結果は論文投稿中である。

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  • 赤外-紫外二重共鳴分光法による水素結合両性分子クラスターの構造と緩和の研究

    Grant number:08230227  1996    

    日本学術振興会  科学研究費助成事業 重点領域研究  重点領域研究  早稲田大学

    藤井 正明

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    Grant amount: \1500000 ( Direct Cost: \1500000 )

    プロトン供与基とプロトン受容基を共に有する水素結合両性分子として7-アザインドール分子に着目し、7-アザインドール水和クラスター及び2量体の赤外スペクトルを赤外-紫外二重共鳴分光法(IR Dip分光法)により測定した。測定した7-アザインドール水和クラスター(水1〜3分子)の赤外スペクトルを、種々の配向の7-アザインドール水和クラスターに対する理論赤外スペクトル(渡部秀和・岩田末広、分子科学研究所による)と比較し、水和クラスターが環状構造であることを明らかにした。水分子の水素結合鎖は7-アザインドールと2箇所で結合しており、水素結合両性分子に特徴的な水和クラスター構造が明らかになった。
    7-アザインドール2量体は従来の研究により異性体の存在が明らかにされていた。このうち、一方の異性体は電子励起状態でプロトン移動反応活性であり2箇所で水素結合した平面型構造と考えられている。もう一方の異性体はプロトン移動反応不活性であり、これよりプロトン移動反応が困難なT型構造といわれてきた。しかし、どちらの2量体もS1←S0電子遷移が非常に近接しており、水素結合力が同程度と考えられるため反応不活性な2量体のT型構造に疑問が持たれていた。そこで赤外-紫外二重共鳴分光法により反応不活性な2量体の赤外スペクトルを測定したところ、OH基伸縮振動と考えられる明瞭な振動遷移を見出した。これは反応不活性な2量体は純粋な2量体ではなく、水分子を含んだ2量体であることを示しており、反応不活性となる原因が内包されている水分子によることを初めて明らかにした。
    以上のように水素結合両性分子の形成するクラスターに関し、赤外-紫外二重共鳴法により構造と反応性を明らかにすることができた。

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  • パルス電場イオン化分光法によるトルエン誘導体カチオンのメチル基内部回転運動の解明

    Grant number:07640687  1995    

    日本学術振興会  科学研究費助成事業 一般研究(C)  一般研究(C)  早稲田大学

    藤井 正明

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    Grant amount: \2200000 ( Direct Cost: \2200000 )

    高分解能光電子分光法に相当するパルス電場イオン化分光法をo,m-トルイジン、o-クレゾール、o,m-キシレンに適用した。観測したすべてのスペクトルは非調和な間隔の低振動数のバンドを示し、これをカチオンに於けるメチル基内部回転準位と帰属した。トルイジン及びキシレン分子は1次元内部回転子近似に基づき解析し、カチオンに於ける内部回転ポテンシャルを決定した。中性分子におけるポテンシャルと比較したところ、イオン化により内部回転障壁が大きく変化していることが明らかになった。特にm-トルイジンはイオン化後内部回転障壁が20倍も増大し、メチル基が回転しにくくなっている。これらの結果をイオン化による分子構造変化及びイオン化による電子分布変化の観点から検討した。その結果、分子構造変化だけではこの変化を説明できず、電子的効果が重要であることを明らかにした。
    キシレン分子はメチル基を2個有する分子であり、2個のメチル基の相互作用の観点から解析した。m-キシレンカチオンでは2つのメチル基の相互作用が極めて弱く、2個のメチル基が独立して回転していると結論した。一方、o-キシレンは極めて複雑な準位構造を示し、2個のメチル基が強く相互作用していることが示唆された。中性分子における内部回転準位の帰属を基にPFIスペクトルを検討したところ、相互作用による分裂が中性分子の6倍以上に増大していることがわかった。この分裂は中性分子での帰属の検証を含め検討中である。以上の結果は全て現在投稿準備中である。

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  • Laser spectroscopic study of intracluster chemical reactions

    Grant number:05403004  1993 - 1995

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for General Scientific Research (A)  Grant-in-Aid for General Scientific Research (A)  TOHOKU UNIVERSITY

    MIKAMI Naohiko, MAEYAMA Toshihiko

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    Grant amount: \39100000 ( Direct Cost: \39100000 )

    1. Spectroscopic studies of the hydrogen-bonding clusters of phenol were reviewed with an emphasis of the characterization of the cluster structures involving the proton transfer processes. Two experimental methods which were newly developed for the spectroscopy of the size selected clusters and their ions were described. Trapped ion photodissociation spectroscopy revealed that chromophore alternation occurs in the cluster cations with various proton-accepting molecules, such as NH_3 and H_2O.The infrared spectroscopy combined with the ionization detection was applied to the spectra of the OH vibrations which characterized the neutral clusters of phenol with water. The spectroscopic evidence of the ion-pair form of the neutral cluster is presented and the possibility of the intracluster acid-base reaction is discussed.
    2. The OH stretching vibrations of the phenol dimer and trimer prepared in supersonic jets have been observed by IR-UV double-resonance and stimulated Raman-UV double-resonance spectroscopies. In the trimer, all the three OH stretching vibrations showed large red shifts from that of bare phenol. Evidence of the cyclic structure was obtained from an intensity alternation between IR and Raman spectra and by the measurement of the Raman depolarization ratios. In the dimer, it was found that the IR intensity of the OH stretching vibration of the proton-donating phenol is 4 times larger than that of the proton-accepting phenol.

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  • Development of high resolution photoelectron spectroscopy by using higher Rydberg state and spectroscopy of cations

    Grant number:04453013  1992 - 1993

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for General Scientific Research (B) 

    FUJII Masaaki, ITO Mitsuo

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    Grant amount: \8000000 ( Direct Cost: \8000000 )

    High resolution photoelectron spectroscopy by using high Rydberg state has been developed. Resolution of 0.6meV(5cm-1)has been achieved. This resolution is 100 times higher than that of traditional photoelectron spectroscopy. This new spectroscopy can be achieved simply by connecting a home made pulse generator to an usual vacuum chamber for MPI spectroscopy. No special equipment, such as magnetic shield, has been used. It is because this spectroscopy detects field ionization signal of higher Rydberg state instead of photoelectron. The Rydberg molecule is insensitive to an external field therefore the experimental setup can be simplified extremely.
    We applied this technique to diazabicyclooctane, o-, m-, and p-fluorotoluenes, 1,2,4,5-tetrafluorobenzene, and p-defluorobenzene. Well-resolved vibrational structures of cations have been observed. In special, internal rotational levels of methyl groups in fluorotoluene cations have been analyzed and potential curves have been determined. The analysis has revealed great increase of the barrier height of the internal rotation after ionization. From the good correlation between the increase of the barrier height and the decrease of internal rotational constant, it is concluded that the increase of the barrier is due to geometrical change after ionization.
    We have also found polarization effect in this spectroscopy. The band intensity in the spectrum changes drastically when the polarization of the exciting light changes from linear to circular. The change in band intensity correlates with the symmetry of the vibrational level in the cation. It shows that the polarization effect of this spectroscopy is useful to assign the vibrational symmetry of the molecular cation.
    In conclusion, we have established the new high resolution photoelectron spectroscopy by using higher Rydberg state with a simple experimental setup. It will be a powerful tool to study a large molecular cation.

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  • Development of mass-selected ion dip spectroscopy and studies of electronic states of ions

    Grant number:02453015  1990 - 1991

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for General Scientific Research (B)  Tohoku University

    ITO Mitsuo, FUJII Masaaki

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    Grant amount: \6200000 ( Direct Cost: \6200000 )

    Mass-selected ion-dip spectroscopy has been developed and it has been applied for the study of electronic states of fluorobenzene cations in supersonic jets.

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  • インコヒ-レント光によるポンプ・プロ-ブMPIフェムト秒時間分解法の開発

    Grant number:02640363  1990    

    日本学術振興会  科学研究費助成事業  一般研究(C)  東北大学

    藤井 正明, 伊藤 光男

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    Grant amount: \2100000 ( Direct Cost: \2100000 )

    1.YAGレ-ザ-2倍波励起色素レ-ザ-(発光時間10ナノ秒)の光共振器を改造し、ブロ-ドバンドレ-ザ-光(インコヒ-レント光)を発振させた。この光をフェムト秒レ-ザ-用倍波発生結晶で紫外光に変換し、半値巾80cm^<ー1>の紫外インコヒ-レント光を得た。
    2.コンピュ-タ-制御の光学遅延装置を備えたマイケルソン型干渉計を製作した。これを用いてインコヒ-レント光をポンプ光とプロ-ブ光の2つに分け、プロ-ブ光を時間τだけ遅延させて超音速ジェット中の極低温孤立分子に照射した。試料分子はポンプ光によりS_1状態に励起された後プロ-ブ光によりイオン化される。両者の遅延時間を変えながらイオン量を測定してS_1状態の超高速減衰の測定を試みた。
    3.トリエチルアミン分子の非共鳴2光子イオン化を用いて紫外インコヒ-レント光の時間分解能を測定した。得られたシグナルは遅延時間τに対して強度が一定なバックグラウンドと時間τ=0を中心とするピ-ク(コヒ-レントシグナル)により構成されていた。コヒ-レントシグナルの巾から時間分解能は300フェムト秒と測定され、発光時間10ナノ秒のレ-ザ-からフェムト秒時間分解能が得られた。
    4.インコヒ-レント光をアニリン分子に照射し、S_1励起状態の寿命測定を試みた。この状態は長寿命(10ナノ秒)なので理論からは全くピ-クのないスペクトルが予想されていが、観測結果はバックグラウンド上にピ-クを示した。これは分子がイオン化して電子が飛散する過程が観測された事を示し、この方法がS_1に加えて終状態の減衰も同時に反映する事が分かった。
    以上の様に本研究はこの時間分解法の特性を明かにすることができた。現在、超高速減衰する分子の寿命測定に適用するべく、さらに短波長のインコヒ-レント光を発生するレ-ザ-を製作中である。

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  • Rotational Isomers as Studied by Electronic Spectra

    Grant number:60430004  1985 - 1987

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for General Scientific Research (A)  TOHOKU UNIVERSITY

    ITO Mitsuo, FUJII Masaaki, MIKAMI Naohiko

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    Grant amount: \17000000 ( Direct Cost: \17000000 )

    The rotational isomers of several o- and m-substituted phenolos have been studied by using various electronic spectroscopies combined with the supersonic jet technique. It was found that the rotational isomers arising from the orientation of the OH group are easily identified by their electronic excitation energies. The ionization potentials of the individual rotational isomers were accurately determined by two-color ionization threshold spectroscopy. The ionization potentials of the different rotational isomers of the molecule studied show a great difference as large as 200 cm^<-1>, which suggests the possibility of separation of the rotational isomer by the ionization method. It was also found from the electronic spectra in supersonic jets that the rotational isomer selectively forms the complexes with particular solvent molecules. The large amplitude motion and intramolecular hydrogen bonding in the rotational isomer were also studied in detail.

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  • Structure and Dynamics of Molecules and Clusters by Laser Spectroscopies

    1982 -  

    Grant-in-Aid for Scientific Research 

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    Grant type:Competitive

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  • レーザー分光法による分子・クラスターの構造とダイナミクス

    1982 -  

    科学研究費補助金 

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    Grant type:Competitive

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    日本学術振興会 特別研究員等審査会   専門委員  

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    国立大学教育研究評価委員会   専門委員  

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    日本学術振興会 科学研究費委員会   専門委員  

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    (公社)日本分光学会   理事  

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    日本学術振興会 特別研究員等審査会   専門委員  

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    分子科学会   会長  

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    文科省科学技術政策研究所科学技術動向研究センター   専門調査員  

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    日本学術振興会 科学研究費委員会   専門委員  

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    日本学術振興会 特別研究員等審査会   専門委員  

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    文科省研究振興局科学技術・学術審査会   専門委員  

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