九州大学-研究者情報 [大橋和彦 (准教授) 理学研究院化学部門]

溶液中の芳香族分子の励起状態における動的過程
キーワード：ベンゼン誘導体，励起状態，プロトン移動，電子移動，無輻射遷移
2017.04.

生体関連分子と金属イオンの間の相互作用
キーワード：金属イオン，ホルムアミド，赤外分光，配位様式，分子間相互作用
2014.04.

遷移金属イオンの配位構造と溶媒和初期過程の追跡
キーワード：遷移金属イオン，レーザー分光，赤外スペクトル，配位構造，溶媒和構造
2005.04～2015.08.

金属および分子イオンの溶媒和構造とクラスター内反応
キーワード：金属イオン，レーザー分光，赤外スペクトル，溶媒和構造，クラスター内反応
2000.04～2015.08.

分子クラスターイオンの構造とダイナミックス
キーワード：クラスターイオン, 電子・振動スペクトル, 水素結合, 電荷共鳴相互作用, エネルギー移動
1989.03～2005.03.

JSPS Core-to-Core Program "Photoionisation-induced switch in aromatic molecule-solvent recognition"
2012.04～2015.03, 代表者：Masaaki Fujii, Tokyo Institute of Technology, Tokyo Institute of Technology (Japan), Kyushu University (Japan), Technische Universität Berlin (Germany), The University of Manchester (UK), Université d'Aix Marseille (France), Université Paris-Sud (France).

特定領域研究「分子高次系機能解明のための分子科学-先端計測法の開拓による素過程的理解」
2007.10～2012.03, 代表者：関谷博, 九州大学, 九州大学（日本），東京工業大学（日本），理化学研究所（日本），大阪大学（日本）.

イオン液体
2005.06～2012.03, 代表者：石黒慎一，梅林泰宏, 九州大学, 九州大学（日本）.

原子分子表面国際データセンターリサーチコア
2004.10～2008.03, 代表者：季村峯生, 九州大学, 九州大学（日本）.

主要著書

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主要原著論文

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1.	Takumi Watanabe, Kazuhiko Ohashi, Similarity and dissimilarity between water and methanol in solvent effects on the spectroscopic properties of aniline: Molecular dynamics and time-dependent DFT studies , Computational and Theoretical Chemistry, 10.1016/j.comptc.2022.113850, 1215, 113850, 2022.08.
2.	Kazuhiko Ohashi, Hayato Takeshita, Infrared spectroscopic and computational studies of Co(ClO₄)₂ dissolved in N,N-dimethylformamide (DMF). Vibrations of DMF influenced by Co²⁺ or ClO₄^- or both , Spectrochimica Acta, Part A, 10.1016/j.saa.2020.119289, 248, 119289, 2021.01.
3.	Kazuhiko Ohashi, Nobutaka Hikiishi, Vibrational Spectroscopic and Computational Studies on Formamide Solutions of Alkali Metal Ions , Journal of Solution Chemistry, 10.1007/s10953-019-00943-6, 49, 1442-1457, 2020.01.
4.	Kazuhiko Ohashi, Nobutaka Hikiishi, Hayato Takeshita, Infrared spectroscopic and computational studies on formamide solutions of Ca²⁺. Vibrational frequencies of formamide and modes of coordination to Ca²⁺ , Spectrochimica Acta, Part A, 10.1016/j.saa.2018.07.089, 206, 112–119, 2019.01.
5.	Kazuhiko Ohashi, Jun Sasaki, Gun Yamamoto, Ken Judai, Nobuyuki Nishi, Hiroshi Sekiya, Temperature effects on prevalent structures of hydrated Fe⁺ complexes: Infrared spectroscopy and DFT calculations of Fe⁺(H₂O)_n (n = 3–8) , Journal of Chemical Physics, 141, 214307-1～10, 2014.12.
6.	Nobuhiro Koga, Kazuhiko Ohashi, Kazuki Furukawa, Toshitaka Imamura, Ken Judai, Nobuyuki Nishi, Hiroshi Sekiya, Coordination and solvation of V⁺ with ammonia molecules: infrared photodissociation spectroscopy of V⁺(NH₃)_n (n = 4–8) , Chemical Physics Letters, 539-540, 1-6, 2012.06.
7.	Kazuki Furukawa, Kazuhiko Ohashi, Nobuhiro Koga, Toshitaka Imamura, Ken Judai, Nobuyuki Nishi, and Hiroshi Sekiya, Coordinatively unsaturated cobalt ion in Co⁺(H₂O)_n (n = 4-6) probed with infrared photodissociation spectroscopy , Chemical Physics Letters, 508, 202-206, 2011.05.
8.	Toshitaka Imamura, Kazuhiko Ohashi, Jun Sasaki, Kazuya Inoue, Kazuki Furukawa, Ken Judai, Nobuyuki Nishi, and Hiroshi Sekiya, Infrared photodissociation spectroscopy of Co⁺(NH₃)_n and Ni⁺(NH₃)_n: preference for tetrahedral or square-planar coordination , Physical Chemistry Chemical Physics (PCCP), 12, 11647-11656, 2010.09.
9.	Kazuki Furukawa, Kazuhiko Ohashi, Toshitaka Imamura, Jun Sasaki, Ken Judai, Nobuyuki Nishi, and Hiroshi Sekiya , Methanol solvation of the Ag⁺ ion probed with infrared photodissociation spectroscopy of Ag⁺(CH₃OH)_n (n = 1-5) , Chemical Physics Letters, 495, 8-13, 2010.07.
10.	Kazuhiko Ohashi, Kazuya Inoue, Takuro Iino, Jun Sasaki, Ken Judai, Nobuyuki Nishi, Hiroshi Sekiya , A molecular picture of metal ion solvation: Infrared spectroscopy of Cu⁺(NH₃)_n and Ag⁺(NH₃)_n in the gas phase , Journal of Molecular Liquid, 147, 71-76, 2009.07.
11.	Jun Sasaki, Kazuhiko Ohashi, Kazuya Inoue, Toshitaka Imamura, Ken Judai, Nobuyuki Nishi, Hiroshi Sekiya , Infrared photodissociation spectroscopy of V⁺(H₂O)_n (n = 2-8): Coordinative saturation of V⁺ with four H₂O molecules , Chemical Physics Letters, 474, 36-40, 2009.05.
12.	Kazuya Inoue, Kazuhiko Ohashi, Takuro Iino, Jun Sasaki, Ken Judai, Nobuyuki Nishi, Hiroshi Sekiya , Coordination structures of the silver ion: infrared photodissociation spectroscopy of Ag⁺(NH₃)_n (n = 3–8) , Physical Chemistry Chemical Physics (PCCP), 10, 3052-3062, 2008.06.
13.	Kazuya Inoue, Kazuhiko Ohashi, Takuro Iino, Ken Judai, Nobuyuki Nishi, Hiroshi Sekiya , Coordination and solvation of copper ion: infrared photodissociation spectroscopy of Cu⁺(NH₃)_n (n = 3-8) , Physical Chemistry Chemical Physics (PCCP), 9, 4793-4802, 2007.08.
14.	Takuro Iino, Kazuhiko Ohashi, Kazuya Inoue, Ken Judai, Nobuyuki Nishi, Hiroshi Sekiya , Coordination and solvation of noble metal ions: Infrared spectroscopy of Ag⁺(H₂O)_n , European Physical Journal D, 43, 37-40, 2007.07.
15.	Takuro Iino, Kazuhiko Ohashi, Kazuya Inoue, Ken Judai, Nobuyuki Nishi, Hiroshi Sekiya , Infrared spectroscopy of Cu⁺(H₂O)_n and Ag⁺(H₂O)_n: Coordination and solvation of noble-metal ions , Journal of Chemical Physics, 126, 194302-1~11, 2007.05.
16.	Takuro Iino, Kazuhiko Ohashi, Yutaka Mune, Yoshiya Inokuchi, Ken Judai, Nobuyuki Nishi, Hiroshi Sekiya , Infrared photodissociation spectra and solvation structures of Cu⁺(H₂O)_n (n = 1-4) , Chemical Physics Letters, 427, 24-28, 2006.08.
17.	Yutaka Mune, Kazuhiko Ohashi, Takuro Iino, Yoshiya Inokuchi, Ken Judai, Nobuyuki Nishi, Hiroshi Sekiya , Infrared photodissociation spectroscopy of [Al(NH₃)_n]⁺ (n = 1-5): solvation structures and insertion reactions of Al⁺ into NH₃ , Chemical Physics Letters, 419, 201-206, 2006.02.
18.	Kazuhiko Ohashi, Kazutaka Terabaru, Yoshiya Inokuchi, Yutaka Mune, Hironobu Machinaga, Nobuyuki Nishi, and Hiroshi Sekiya , Infrared photodissociation spectroscopy of Mg⁺(NH₃)_n (n = 3-6): direct coordination or solvation through hydrogen bonding , Chemical Physics Letters, 10.1016/j.cplett.2004.06.048, 393, 1-3, 264-270, 393, 264-270, 2004.07.
19.	Hironobu Machinaga, Kazuhiko Ohashi, Yoshiya Inokuchi, Nobuyuki Nishi, and Hiroshi Sekiya , Infrared photodissociation spectra and solvation structures of Mg⁺(CH₃OH)_n (n = 1-4) , Chemical Physics Letters, 10.1016/j.cplett.2004.04.094, 391, 1-3, 85-90, 391, 85-90, 2004.06.
20.	Yoshiki Honkawa, Yoshiya Inokuchi, Kazuhiko Ohashi, Nobuyuki Nishi, and Hiroshi Sekiya, Infrared spectra and structures of aniline⁺-furan and aniline⁺phenol. Preference between π-type and σ-type hydrogen-bonded structures, Chemical Physics Letters, 10.1016/S0009-2614(03)00985-0, 376, 1-2, 244-250, 376, 244-250, 2003.07.
21.	Yoshiya Inokuchi, Keijiro Ohshimo, Kazuhiko Ohashi, Yoshiki Honkawa, Hiroshi Sekiya, and Nobuyuki Nishi, Fermi resonance interaction in hetero-dimer and trimer ions containing aniline⁺, Chemical Physics Letters, 10.1016/S0009-2614(03)00647-X, 373, 5-6, 568-574, 373, 568-574, 2003.05.
22.	Yoshiya Inokuchi, Kazuhiko Ohashi, Yoshiki Honkawa, Norifumi Yamamoto, Hiroshi Sekiya, and Nobuyuki Nishi, Infrared Photodissociation Spectroscopy of [Aniline-(Water)_n]⁺ (n = 1-8): Structural Change from Branched and Cyclic to Proton-Transferred Forms, Journal of Physical Chemistry A, 10.1021/jp0225525, 107, 21, 4230-4237, 107, 4230-4237, 2003.05.
23.	Takayuki Michi, Kazuhiko Ohashi, Yoshiya Inokuchi, Nobuyuki Nishi, and Hiroshi Sekiya, Infrared spectra and structures of (CH₃NH₂)_nH⁺ (n = 1-4). Binding features of an excess proton, Chemical Physics Letters, 10.1016/S0009-2614(03)00217-3, 371, 1-2, 111-117, 371, 111-117, 2003.03.
24.	Yoshiya Inokuchi, Kazuhiko Ohashi, Hiroshi Sekiya, and Nobuyuki Nishi, Positive charge distribution in (benzene)₁(toleune)₂⁺ and (benzene)₂(toluene)₁⁺ studied by photodissociation spectroscopy, Journal of Chemical Physics, 10.1063/1.1521126, 117, 23, 10648-10653, 117, 10648-10653, 2002.12.
25.	Yoshiya Inokuchi, Kazuhiko Ohashi, Yoshiki Honkawa, Hiroshi Sekiya, and Nobuyuki Nishi, Intracluster proton transfer in aniline-amine complex ions, Chemical Physics Letters, 10.1016/S0009-2614(02)00737-6, 359, 3-4, 283-288, 359, 283-288, 2002.06.
26.	Kazuhiko Ohashi and Nobuyuki Nishi, Photodissociation dynamics of (C₆H₆)₃⁺: Role of the extra benzene molecule weakly bound to the dimer core, Journal of Chemical Physics, 109, 3971-3982, 1998.09.
27.	Kazuhiko Ohashi and Nobuyuki Nishi, Photodissociation dynamics of (C₆H₆)₂⁺, Journal of Chemical Physics, 10.1063/1.464632, 98, 1, 390-398, 98, 390-398, 1993.01.
28.	Kazuhiko Ohashi and Nobuyuki Nishi, Photodepletion spectroscopy on charge resonance band of (C₆H₆)₂⁺ and (C₆H₆)₃⁺, Journal of Physical Chemistry, 10.1021/j100186a030, 96, 7, 2931-2932, 96, 2931-2932, 1992.04.
29.	Kazuhiko Ohashi and Nobuyuki Nishi, Photodissociation spectroscopy of benzene cluster ions: (C₆H₆)₂⁺ and (C₆H₆)₃⁺, Journal of Chemical Physics, 95, 4002-4009, 1991.09.

主要総説, 論評, 解説, 書評, 報告書等

全てを見る→

1.	大橋和彦, ベンゼン2量体イオンの光解離スペクトル－その時，その後 , 分光研究, 70, 163-167, 2021.12.
2.	大橋和彦, 溶媒和金属イオンの気相赤外分光 , 分光研究, 59, 268-284, 2010.12.
3.	井口佳哉，大橋和彦, 芳香族分子クラスターイオンの質量選別光解離分光 , 分光研究, 52, 333-348, 2003.12.

主要学会発表等

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1.	Takumi Watanabe, Kazuhiko Ohashi, MD and TD-DFT studies of solvent effects on the spectroscopic properties of aniline: Similarity and dissimilarity between water and methanol , 37th International Conference on Solution Chemistry, 2022.07.
2.	Kazuhiko Ohashi, Nobutaka Hikiishi, Vibrational spectroscopic and computational studies on formamide solutions of alkali-metal ions , 36th International Conference on Solution Chemistry, 2019.08.
3.	Kazuhiko Ohashi, Nobutaka Hikiishi, Hayato Takeshita, Formamide solutions of Ca²⁺ as studied by infrared spectroscopy and quantum chemical calculations , Joint Conference of JMLG/EMLG Meeting 2018 and 41st Symposium on Solution Chemistry of Japan, 2018.11.
4.	Kazuhiko Ohashi, Dynamical and statistical nature of the initial stage of metal ion hydration , International Symposium on "Diversity of Chemical Reaction Dynamics", 2017.07.
5.	Kazuhiko Ohashi, Statistical and dynamical aspects of the initial stage of metal-ion hydration , 27th International Symposium on Molecular Beams (ISMB 2017), 2017.06.
6.	Kazuhiko Ohashi, Hiroshi Sekiya, Dynamical and statistical nature of the initial stage of metal ion hydration , Stereodynamics 2016, 2016.11.
7.	Nobutaka Hikiishi, Kazuhiko Ohashi, Hiroshi Sekiya , Vibrational/electronic spectroscopy and theoretical calculations for studying metal ions in formamide solutions , 2015 International Chemical Congress of Pacific Basin Societies, 2015.12.
8.	Kazuhiko Ohashi, Hiroshi Sekiya, Drastic changes in IR spectral features of solvated metal ions caused by rare-gas attachment , 2015 International Chemical Congress of Pacific Basin Societies, 2015.12.
9.	Kazuhiko Ohashi, Most stable structures in cold clusters and entropy-driven isomers in warm clusters , Mini-Symposium "Recent Progress in Molecular Science of Korea and Japan", 2015.07.
10.	Kazuhiko Ohashi, Jun Sasaki, Gun Yamamoto, Ken Judai, Nobuyuki Nishi, Hiroshi Sekiya, IR spectroscopy and DFT calculations of Fe⁺(H₂O)_n (n = 3-8): Temperature effects on prevalent hydration structures , XXVI International Symposium on Molecular Beams (ISMB 2015), 2015.06.
11.	Nobutaka Hikiishi, Kazuhiko Ohashi, Hiroshi Sekiya, Spectroscopic and DFT studies of metal ion–formamide interactions in liquid phase , 31st Symposium on Chemical Kinetics and Dynamics, 2015.06.
12.	Kazuhiko Ohashi, Kazuki Furukawa, Ken Judai, Nobuyuki Nishi, Hiroshi Sekiya, Entropy-driven isomer switching in Co⁺(H₂O)₄ , Core-to-Core International Symposium on Ionization Induced Switching, 2014.12.
13.	Kazuhiko Ohashi, Jun Sasaki, Gun Yamamoto, Ken Judai, Nobuyuki Nishi, Hiroshi Sekiya, Entropy-driven isomer switching in Fe⁺(H₂O)_n probed with IR spectroscopy and free-energy calculations , XVII International Symposium on Small Particles and Inorganic Clusters (ISSPIC XVII), 2014.09.
14.	Kazuhiko Ohashi, Kazuki Furukawa, Ken Judai, Nobuyuki Nishi, Hiroshi Sekiya, Entropy-driven isomer switching in Co⁺(H₂O)_n probed with IR spectroscopy , 30th Symposium on Chemical Kinetics and Dynamics, 2014.06.
15.	Kazuhiko Ohashi, Ken Judai, Nobuyuki Nishi, Hiroshi Sekiya, Entropy effects on isomer distributions of hydrated metal ions probed with infrared spectroscopy , Gordon Research Conferences on Molecular & Ionic Clusters 2014, 2014.04.
16.	Kazuhiko Ohashi, Gun Yamamoto, Jun Sasaki, Ken Judai, Nobuyuki Nishi, Hiroshi Sekiya, Isomer switching in Fe⁺(H₂O)_n driven by entropy effects , Core-to-Core International Symposium on Ionization Induced Switching, 2013.12.
17.	Kazuhiko Ohashi, Jun Sasaki, Ken Judai, Nobuyuki Nishi, Hiroshi Sekiya, Infrared Spectroscopy of V⁺(H₂O)_n: Temperature Effects on Isomer Distributions , 32nd International Symposium on Free Radicals, 2013.07.
18.	Kazuhiko Ohashi, Kazuya Inoue, Ken Judai, Nobuyuki Nishi, Hiroshi Sekiya, Coordination Chemistry of Cu⁺ and Ag⁺ in Ammonia Probed with IR Spectroscopy of Gas-Phase Clusters , Pre-symposium of 33ICSC "Recent Progress in Analytical Sciences", 2013.07.
19.	Kazuhiko Ohashi, Jun Sasaki, Ken Judai, Nobuyuki Nishi, Hiroshi Sekiya, Temperature effects on isomer distributions of V⁺(H₂O)_n probed with IR spectroscopy , 29th Symposium on Chemical Kinetics and Dynamics, 2013.06.
20.	Kazuhiko Ohashi, Jun Sasaki, Nobuhiro Koga, Ken Judai, Nobuyuki Nishi, Hiroshi Sekiya, Temperature Effects on Isomer Distributions of Gaseous V⁺ Complexes Probed with Infrared Spectroscopy , Gordon Research Conferences on Gaseous Ions: Structures, Energetics & Reactions 2013, 2013.02.
21.	Kazuhiko Ohashi, Gun Yamamoto, Jun Sasaki, Kazuki Furukawa, Ken Judai, Nobuyuki Nishi, Hiroshi Sekiya, Coordination properties and spin states of hydrated Fe⁺ probed with infrared photodissociation spectroscopy , XVI International Symposium on Small Particles and Inorganic Clusters (ISSPIC XVI), 2012.07.
22.	Gun Yamamoto, Kazuhiko Ohashi, Jun Sasaki, Kazuki Furukawa, Ken Judai, Nobuyuki Nishi, Hiroshi Sekiya, Infrared spectroscopy of Fe⁺(H₂O)_n in the gas phase: Coordination chemistry of the Fe⁺ ion , 28th Symposium on Chemical Kinetics and Dynamics, 2012.06.
23.	Kazuhiko Ohashi, Jun Sasaki, Gun Yamamoto, Nobuhiro Koga, Kazuki Furukawa, Ken Judai, Nobuyuki Nishi, Hiroshi Sekiya , Coordination structures and spin states of solvated Fe⁺ probed with infrared spectroscopy , Gordon Research Conferences on Molecular & Ionic Clusters 2012, 2012.01.
24.	Kazuhiko Ohashi, Nobuhiro Koga, Kazuki Furukawa, Ken Judai, Nobuyuki Nishi, Hiroshi Sekiya , Coordination Chemistry of V⁺ Probed with IR Spectroscopy and Quantum Chemical Calculations , The Third Asian Spectroscopy Conference, 2011.11.
25.	Kazuhiko Ohashi, Kazuki Furukawa, Nobuhiro Koga, Ken Judai, Nobuyuki Nishi, and Hiroshi Sekiya , IR photodissociation spectroscopy of solvated transition-metal ions: coordinatively unsaturated Co⁺ in Co⁺(H₂O)_n , The 5th Symposium on Molecular Science for Supra Functional Systems, 2011.07.
26.	Kazuhiko Ohashi , Infrared spectra and structures of hydrated metal ions , Mini-symposium on hydration of gas phase ions, metals to peptides, 2011.06.
27.	Kazuhiko Ohashi, Kazuki Furukawa, Nobuhiro Koga, Ken Judai, Nobuyuki Nishi, and Hiroshi Sekiya , Coordinatively unsaturated cobalt ion in Co⁺(H₂O)_n probed with infrared photodissociation spectroscopy , XXIII International Symposium on Molecular Beams (ISMB 2011), 2011.05.
28.	Kazuhiko Ohashi, Toshitaka Imamura, Kazuya Inoue, Ken Judai, Nobuyuki Nishi, and Hiroshi Sekiya , Infrared spectroscopy of ammonia-solvated transition-metal ions , 2010 International Chemical Congress of Pacific Basin Societies, 2010.12.
29.	Nobuhiro Koga, Kazuhiko Ohashi, Toshitaka Imamura, Kazuki Furukawa, Ken Judai, Nobuyuki Nishi, Hiroshi Sekiya , Coordination and solvation of the gas-phase vanadium ion: infrared spectroscopy of V⁺(NH₃)_n , 2010 International Chemical Congress of Pacific Basin Societies, 2010.12.
30.	Kazuki Furukawa, Kazuhiko Ohashi, Nobuhiro Koga, Toshitaka Imamura, Ken Judai, Nobuyuki Nishi, Hiroshi Sekiya , IR photodissociation spectra and hydration structures of Co⁺(H₂O)_n , 2010 International Chemical Congress of Pacific Basin Societies, 2010.12.
31.	Nobuhiro Koga, Kazuhiko Ohashi, Kazuki Furukawa, Toshitaka Imamura, Ken Judai, Nobuyuki Nishi, Hiroshi Sekiya , Coordination and solvation of V⁺ in the gas phase: Infrared spectroscopy of V⁺(NH₃)_n , Molecular Photoscience Research Center International Symposium "New Horizons of Cluster Chemistry", 2010.10.
32.	Kazuki Furukawa, Kazuhiko Ohashi, Nobuhiro Koga, Toshitaka Imamura, Ken Judai, Nobuyuki Nishi, Hiroshi Sekiya , Hydration structures of the Co⁺ ion: IR photodissociation spectroscopy of Co⁺(H₂O)_n , Molecular Photoscience Research Center International Symposium "New Horizons of Cluster Chemistry", 2010.10.
33.	Kazuhiko Ohashi, Toshitaka Imamura, Nobuhiro Koga, Kazuki Furukawa, Ken Judai, Nobuyuki Nishi, Hiroshi Sekiya , Expected and unexpected coordination chemistry of transition-metal ions , 2010 Molecular and Ionic Clusters Conference, 2010.09.
34.	Kazuki Furukawa, Kazuhiko Ohashi, Nobuhiro Koga, Toshitaka Imamura, Ken Judai, Nobuyuki Nishi, Hiroshi Sekiya , IR photodissociation spectra and coordination structures of hydrated cobalt ions , 2010 Molecular and Ionic Clusters Conference, 2010.09.
35.	Kazuhiko Ohashi, Jun Sasaki, Toshitaka Imamura, Kazuki Furukawa, Ken Judai, Nobuyuki Nishi, Hiroshi Sekiya , IR photodissociation spectroscopy of V⁺(H₂O)_n and V⁺(H₂O)_n・N₂： Coordinative saturation of V⁺ with four H₂O molecules , The Second Asian Spectroscopy Conference, 2009.11.
36.	Toshitaka Imamura, Kazuhiko Ohashi, Jun Sasaki, Kazuya Inoue, Kazuki Furukawa, Ken Judai, Nobuyuki Nishi, Hiroshi Sekiya , Coordination chemistry of Ni⁺(NH₃)_n and Co⁺(NH₃)_n studied by IR spectroscopy , The Second Asian Spectroscopy Conference, 2009.11.
37.	Kazuki Furukawa, Kazuhiko Ohashi, Jun Sasaki, Toshitaka Imamura, Ken Judai, Nobuyuki Nishi, Hiroshi Sekiya , IR photodissociation spectroscopy of Ag⁺(CH₃OH)_n: Does the Ag⁺ ion have an inherent coordination number? , The Second Asian Spectroscopy Conference, 2009.11.
38.	Kazuhiko Ohashi, Jun Sasaki, Toshitaka Imamura, Kazuki Furukawa, Ken Judai, Nobuyuki Nishi, Hiroshi Sekiya , Coordination chemistry of transition-metal ions: IR spectroscopy of M⁺(NH₃)_n and M⁺(H₂O)_n (M = V, Ni, Cu, and Ag) , The 3rd Symposium on Molecular Science for Supra Functional Systems, 2009.06.
39.	Kazuhiko Ohashi, Kazuya Inoue, Jun Sasaki, Toshitaka Imamura, Ken Judai, Nobuyuki Nishi, Hiroshi Sekiya , Infrared spectroscopy of ammonia-solvated transition-metal ions , XIV International Symposium on Small Particles and Inorganic Clusters (ISSPIC XIV), 2008.09.
40.	Kazuhiko Ohashi, Kazuya Inoue, Jun Sasaki, Toshitaka Imamura, Ken Judai, Nobuyuki Nishi, Hiroshi Sekiya , IR spectroscopy of ammonia-solvated transition-metal ions , Gordon Research Conferences on Molecular & Ionic Clusters 2008, 2008.09.
41.	Jun Sasaki, Kazuhiko Ohashi, Takuro Iino, Kazuya Inoue, Ken Judai, Nobuyuki Nishi, Hiroshi Sekiya , Coordination and Hydration of Fe⁺ studied by Infrared Spectroscopy of Fe⁺(H₂O)_n in the Gas Phase , Joint Conference of JMLG/EMLG Meeting 2007 and 30th Symposium on Solution Chemistry of Japan, 2007.11.
42.	Kazuhiko Ohashi, Takuro Iino, Kazuya Inoue, Ken Judai, Nobuyuki Nishi, Hiroshi Sekiya , Coordination of Noble-Metal Ions Probed with IR Spectroscopy of Mass-Selected M⁺(H₂O)_n (M = Cu, Ag) in the Gas Phase , Joint Conference of JMLG/EMLG Meeting 2007 and 30th Symposium on Solution Chemistry of Japan, 2007.11.
43.	Kazuya Inoue, Kazuhiko Ohashi, Takuro Iino, Jun Sasaki, Ken Judai, Nobuyuki Nishi, Hiroshi Sekiya , Coordination and Solvation of Noble-Metal Ions in the Gas Phase: Infrared Spectroscopy of Cu⁺(NH₃)_n and Ag⁺(NH₃)_n , Joint Conference of JMLG/EMLG Meeting 2007 and 30th Symposium on Solution Chemistry of Japan, 2007.11.
44.	Kazuhiko Ohashi, Takuro Iino, Kazuya Inoue, Ken Judai, Nobuyuki Nishi, and Hiroshi Sekiya , Infrared Spectra and Structures of Solvated Metal Ions: Direct Coordination vs. Solvation through Hydrogen Bonding , Okazaki Conference 2007 "Molecular Science and Chemical Biology of Biomolecular Function", 2007.11.
45.	Kazuhiko Ohashi, Takuro Iino, Kazuya Inoue, Jun Sasaki, Ken Judai, Nobuyuki Nishi, and Hiroshi Sekiya , Coordination and Solvation in M⁺(H₂O)_n (M = Cu, Ag, Fe) Probed with Infrared Photodissociation Spectroscopy , XXII International Symposium on Molecular Beams (ISMB 2007), 2007.05.
46.	Kazuhiko Ohashi, Takuro Iino, Kazuya Inoue, Hiroshi Sekiya, Ken Judai, Nobuyuki Nishi , Coordination and Solvation of Noble Metal Ions: Infrared Spectroscopy of Cu⁺(H₂O)_n and Ag⁺(H₂O)_n , XIII International Symposium on Small Particles and Inorganic Clusters, 2006.07.
47.	Kazuhiko Ohashi, Takuro Iino, Kazuya Inoue, Ken Judai, Nobuyuki Nishi, Hiroshi Sekiya , Coordination and Solvation Structures of Noble Metal Ions , Sendai International Symposium on Molecular Cluster Spectroscopy, 2006.05.
48.	Kazuhiko Ohashi , Vibrational spectroscopy and solvation structures of metal ions , 2005 International Chemical Congress of Pacific Basin Societies, 2005.12.
49.	Takuro Iino, Kazuhiko Ohashi, Yutaka Mune, Yoshiya Inokuchi, Ken Judai, Nobuyuki Nishi, Hiroshi Sekiya , IR photodissociation spectra and solvation structures of Cu⁺(H₂O)_n , 2005 International Chemical Congress of Pacific Basin Societies, 2005.12.
50.	Yukata Mune, Kazuhiko Ohashi, Takuro Iino, Yoshiya Inokuchi, Ken Judai, Nobuyuki Nishi, Hiroshi Sekiya , Infrared photodissociation spectroscopy of [Al(NH₃)_n]⁺ , 2005 International Chemical Congress of Pacific Basin Societies, 2005.12.
51.	Kazuhiko Ohashi, Takuro Iino, Yutaka Mune, Yoshiya Inokuchi, Ken Judai, Nobuyuki Nishi, and Hiroshi Sekiya, Coordination and Solvation of Copper Ions: Infrared Photodissociation Spectroscopy of Cu⁺(H₂O)_n, XXII International Conference on Photochemistry, 2005.07.
52.	Kazuhiko Ohashi, Yoshiya Inokuchi, Yutaka Mune, Hironobu Machinaga, Kazutaka Terabaru, Nobuyuki Nishi, and Hiroshi Sekiya, Site-Selective Solvation in Mg⁺(CH₃OH)_n and Mg⁺(NH₃)_n, Internatinal Symposium on Stereodynamics of Chemical Reactions 2004, 2004.12.
53.	Kazuhiko Ohashi, Yoshiya Inokuchi, Hironobu Machinaga, Takayuki Michi, Nobuyuki Nishi, and Hiroshi Sekiya, Binding Features of an Excess Proton in (CH₃NH₂)_nH⁺ and (CH₃OH)_nH⁺, Okazaki Conference 2003 "International Symposium on Functional Clusters and Cluster-Based Nano-Materials", 2003.12.
54.	Yoshiki Honkawa, Yoshiya Inokuchi, Kazuhiko Ohashi, Nobuyuki Nishi, and Hiroshi Sekiya, Infrared photodissociation spectroscopy of aniline ion complexes: Preference between π-type and σ-type hydrogen bonds, 16th Joint Seminar between the Kyushu Branch of the Chemical Society of Japan and the Pusan Branch of the Korean Chemical Society, 2003.05.
55.	Kazuhiko Ohashi, Hydrogen bonding and charge resonance interactions in aromatic cluster ions, 2000 International Chemical Congress of Pacific Basin Societies, 2000.12.
56.	Kazuyuki Hino, Yoshiya Inokuchi, Kazuhiko Ohashi, Hironobu Izutsu, Nobuyuki Nishi, and Hiroshi Sekiya, Hydrogen bonding and charge resonance interactions in the heterodimer ions of benzene with benzyl alcohol, benzyl amine, and benzyl cyanide, 2000 International Chemical Congress of Pacific Basin Societies, 2000.12.
57.	Kazuhiko Ohashi, Yoshiya Inokuchi, Nobuyuki Nishi, and Hiroshi Sekiya, Hydrogen bonding and charge resonance interactions in aromatic cluster ions, Okazaki COE International Conference "Interplay of Theories and Experiments in Structural Analyses of Molecular Clusters", 1999.12.
58.	Kazuhiko Ohashi and Hiroshi Sekiya, Application of Statistical Theories to Photodissociation of Benzene Cluster Ions, International Symposium on Photo-Dynamics and Reaction Dynamics of Molecules, 1999.08.
59.	Yoshiya Inokuchi, Kazuhiko Ohashi, and Nobuyuki Nishi, Charge Delocalization and Photoinduced Charge Hopping in Aromatic Cluster Ions, 1998 Asian-Pacific Forum on Science and Technology, Optical Probing and Creation of Advanced Photoactive Materials, 1998.11.

その他の優れた研究業績

2008.06, 研究論文を紹介する説明図がPhysical Chemistry Chemical Physics (PCCP) 誌１０巻２１号の表紙に掲載された．.

2007.08, 研究論文を紹介する説明図がPhysical Chemistry Chemical Physics (PCCP) 誌９巻３４号の表紙に掲載された．.

所属学会名

日本化学会

日本物理学会

分子科学会

日本分光学会

原子衝突学会

学協会役員等への就任

2022.03～2023.02, 日本化学会, 代議員.

2021.03～2022.02, 日本化学会九州支部, 幹事.

2016.06～2026.05, International Symposium on Molecular Beams, International Advisory Committee.

2014.07～2018.06, 日本分光学会, 代議員.

2014.04～2018.03, 日本分光学会九州支部, 幹事.

2004.03～2005.02, 日本化学会, 幹事.

2001.04～2003.03, 日本分光学会, 幹事.

学会大会・会議・シンポジウム等における役割

2022.10.18～2022.10.20, 第12回CSJ化学フェスタ2022, 実行委員.

2021.07.03～2021.07.03, 第58回化学関連支部合同九州大会, 座長.

2019.07.13～2019.07.14, 九重分子科学セミナー2019, 実行委員長.

2019.07.13～2019.07.14, 九重分子科学セミナー2019, 座長.

2018.09.10～2018.09.13, 第12回分子科学討論会, 実行委員.

2016.07.07～2016.07.09, International Symposium: Recent Progress in Molecular Spectroscopy and Dynamics, 実行委員長.

2016.07.07～2016.07.09, International Symposium: Recent Progress in Molecular Spectroscopy and Dynamics, 座長（Chairmanship）.

2016.03.05～2016.03.05, 特別シンポジウム「未来への架け橋：分子科学最前線と将来展望」, 実行委員.

2015.08.20～2015.08.20, Workshop on Nanoscale Atomic and Molecular Systems, 座長（Chairmanship）.

2014.09.07～2014.09.12, XVII International Symposium on Small Particles and Inorganic Clusters (ISSPIC XVII), 実行委員.

2013.09.24～2013.09.27, 第７回分子科学討論会, 座長（Chairmanship）.

2013.01.28～2013.01.31, The 17th East Asian Workshop on Chemical Dynamics, 実行委員.

2013.01.28～2013.01.31, The 17th East Asian Workshop on Chemical Dynamics, 座長（Chairmanship）.

2012.06.06～2012.06.08, 第２８回化学反応討論会, 実行委員.

2010.10～2010.10, Molecular Photoscience Research Center International Symposium "New Horizons of Cluster Chemistry", 座長（Chairmanship）.

2010.09～2010.09, 第４回分子科学討論会, 座長（Chairmanship）.

2010.09～2010.09, Molecular and Ionic Cluster Conference 2010, 実行委員.

2008.09～2008.09, 第２回分子科学討論会, 実行委員.

2008.09～2008.09, 第２回分子科学討論会, 座長（Chairmanship）.

2006.12～2006.12, 第27回日本化学会九州支部シンポジウム, 座長（Chairmanship）.

2005.07～2005.07, 分子科学研究所研究会多様な水素結合系と量子効果, 座長（Chairmanship）.

2005.06～2005.06, 第21回化学反応討論会, 座長（Chairmanship）.

2004.09～2004.09, 分子構造総合討論会2004, 座長（Chairmanship）.

2004.06～2004.06, 第20回化学反応討論会, 座長（Chairmanship）.

2003.12～2003.12, 平成１５年度日本分光学会秋季講演会・シンポジウム, 座長（Chairmanship）.

2003.09～2003.09, 分子構造総合討論会２００３, 座長（Chairmanship）.

2001.05～2001.05, 第１７回化学反応討論会, プログラム委員.

学会誌・雑誌・著書の編集への参加状況

1999.07～2007.11, 日本分光学会誌「分光研究」, 国内, 編集委員.

学術論文等の審査

年度	外国語雑誌査読論文数	日本語雑誌査読論文数	合計
2023年度	7	0	7
2022年度	4	0	4
2021年度	4	0	4
2020年度	4	0	4
2019年度	4	0	4
2018年度	1	0	1
2017年度	2	0	2
2016年度	1	0	1
2015年度	4	0	4
2014年度	6	0	6
2013年度	1	0	1
2012年度	1	1	2
2011年度	3	0	3
2010年度	1	0	1
2009年度	4	0	4
2008年度	5	0	5
2007年度	4	0	4
2006年度	1	0	1
2005年度	0	1	1
2004年度	1	0	1
2003年度	0	1	1
2002年度	0	0	0

海外渡航状況, 海外での教育研究歴

Qinghai Institute of Salt Lakes, China, 2019.08～2019.08.

De Vereeniging (Radboud University), Netherlands, 2017.06～2017.06.

Institute of Atomic and Molecular Sciences, Taiwan, 2016.11～2016.11.

Waikiki Convention Center, UnitedStatesofAmerica, 2015.12～2015.12.

Parador de Segovia, Spain, 2015.06～2015.07.

Technische Universität Berlin, Germany, 2014.12～2014.12.

Renaissance Tuscany Il Ciocco Resort, Italy, 2014.04～2014.05.

University of Manchester, UnitedKingdom, 2013.12～2013.12.

SEMINARIS SeeHotel Potsdam, Germany, 2013.07～2013.07.

Université d'Aix Marseille, France, 2013.03～2013.03.

Hotel Galvez, UnitedStatesofAmerica, 2013.02～2013.03.

Katholieke Universiteit Leuven, Belgium, 2012.07～2012.07.

Four Points Sheraton/Holiday Inn Express, UnitedStatesofAmerica, 2012.01～2012.02.

Science and Art Center (Xiamen University), China, 2011.11～2011.12.

Université Bordeaux 1, France, 2011.05～2011.05.

Sheraton Waikiki Hotel/Waikiki Convention Center, UnitedStatesofAmerica, 2010.12～2010.12.

Hoam Faculty House (Seoul National University), Korea, 2009.11～2009.12.

Palacio de Congresos Conde Ansúrez (University of Valladolid), Spain, 2008.09～2008.09.

Centre Paul Langevin, France, 2008.09～2008.09.

Stadthotel Freiburg (Freiburg University), Germany, 2007.05～2007.06.

Chalmers Conference Centre (Chalmers University of Technology), Sweden, 2006.07～2006.07.

Sheraton Waikiki Hotel, UnitedStatesofAmerica, 2005.12～2005.12.

Cairns Convention Center, Australia, 2005.07～2005.07.

分子科学研究奨励森野基金, 公益信託分子科学研究奨励森野基金, 1994.08.

科学研究費補助金の採択状況(文部科学省、日本学術振興会)

2010年度～2012年度, 基盤研究(C), 代表, 遷移金属イオンの溶媒和／生体関連分子との結合－気相クラスターの赤外分光による研究.

2007年度～2011年度, 特定領域研究, 分担, 分子クラスター内プロトン・電荷移動ダイナミクス―凝縮相との違いは何に起因するか.

2005年度～2006年度, 基盤研究(C), 代表, 気相クラスターの赤外分光・量子化学計算による金属イオンの溶媒和構造の解明.

1999年度～2000年度, 奨励研究(A), 代表, クラスターイオンの光誘起蒸発過程の観測と単分子反応理論に基づいたモデルの検証.

競争的資金(受託研究を含む)の採択状況

1994年度～1994年度, 代表, 電荷共鳴分子クラスターイオンの構造と励起状態ダイナミクス.

共同研究、受託研究(競争的資金を除く)の受入状況

2010.04～2010.09, 代表, 赤外光解離分光による溶媒和バナジウムイオンの配位構造の解明.

2009.10～2010.03, 代表, 赤外光解離分光による溶媒和Coイオンの配位構造の解明.

2008.10～2009.03, 代表, 遷移金属イオンの電子構造がその溶媒和構造に及ぼす影響.

2008.04～2008.09, 代表, 遷移金属イオンの電子構造がその溶媒和構造に及ぼす影響.

2007.10～2008.03, 代表, 遷移金属イオンの電子構造がその溶媒和構造に及ぼす影響.

2006.10～2007.03, 代表, 気相中における貴金属イオンの配位構造.

2006.04～2006.09, 代表, 気相中における貴金属イオンの配位構造.

2005.10～2006.03, 代表, 遷移金属イオンの配位・溶媒和構造に関する研究.

2005.04～2005.09, 代表, 金属イオンを核とするナノクラスターの構造解析と光誘起反応.

2004.10～2005.03, 代表, 溶媒和金属イオンにおけるイオン対状態生成に関する研究.

2004.04～2004.09, 代表, 気相中における金属イオンの溶媒和構造の研究.

2003.10～2004.03, 代表, 赤外光解離分光によるアルカリ土類金属イオンの溶媒和構造の研究.

2003.04～2003.09, 代表, プロトン付加アルコールクラスター内におけるイオン−分子反応.

2002.04～2002.09, 代表, アニリンイオンを含む水素結合クラスター内におけるプロトン移動.


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