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Kazuhiko Ohashi Last modified date：2023.05.22

Associate Professor / Physical Chemistry
Department of Chemistry
Faculty of Sciences


Graduate School
Department of Chemistry
Graduate School of Sciences
Undergraduate School
Department of Chemistry
School of Sciences


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Homepage
https://kyushu-u.pure.elsevier.com/en/persons/kazuhiko-ohashi
　Reseacher Profiling Tool　Kyushu University Pure
http://www.scc.kyushu-u.ac.jp/Kouzou/str3j.html
Homepage of Structural Chemistry Lab, Dept. of Chem., Faculty of Sci., Kyushu Univ. .
Academic Degree
Doctor of Science
Country of degree conferring institution (Overseas)
No
Field of Specialization
Physical Chemistry
ORCID(Open Researcher and Contributor ID)
0000-0002-6171-3456
Total Priod of education and research career in the foreign country
00years01months
Outline Activities
【Research】
My research interests include:
• Excited-state dynamics of aromatic molecules in solutions
• Interaction of metal ions with biologically relevant molecules
• Coordination structures of transition-metal ions and solvation processes
• Solvation structures and intracluster reactions in solvated metal and molecular ions
• Structures and dynamics of molecular cluster ions

【Education】
I give lectures on:
• "Photodissociation Dynamics" and "Molecular Reaction Dynamics" for graduate students
• "Molecular Spectroscopy" for undergraduate students
• "Basic Chemical Bonding" and "Natural Science on Environmental Problems" for students in general education course

【Social activities】
• Member of International Advisory Committee of "International Symposium on Molecular Beams" (2016~)
• Planning and managing the exhibition "Kyushu University Faculty of Science. Basic research to create the future” at the gallery of Shiiki Hall (2018)
• Planning and managing the exhibition at the Entrance Hall of West Zone 1 (2016~)
Research
Research Interests
  • Excited-state dynamics of aromatic molecules in solutions
    keyword : benzene derivatives, excited states, proton transfer, electron transfer, nonradiative transitions
    2017.04.
  • Interaction of metal ions with biologically relevant molecules
    keyword : metal ion, formamide, infrared spectroscopy, coordination mode, intermolecular interaction
    2014.04.
  • Coordination structures of transition-metal ions and solvation processes
    keyword : transition-metal ion, laser spectroscopy, infrared spectrum, coordination structure, solvation structure
    2005.04～2015.08.
  • Solvation structures and intracluster reactions in solvated metal and molecular ions
    keyword : metal ion, laser spectroscopy, infrared spectrum, solvation structure, intracluster reaction
    2000.04～2015.08.
  • Structures and dynamics of molecular cluster ions
    keyword : cluster ion, electronic spectrum, infrared spectrum, hydrogen bonding, charge resonance interaction, energy transfer
    1989.03～2005.03.
Academic Activities
Reports
 Show All Reports >>
1. Photodissociation Spectrum of Benzene Dimer Ion – At That Time and Then
Kazuhiko Ohashi
Journal of the Spectroscopical Society of Japan 70 (2021) 163-167..
2. Gas-phase Infrared Spectroscopy of Solvated Metal Ions
Kazuhiko Ohashi
Journal of the Spectroscopical Society of Japan 59 (2010) 268-284..
3. Mass-Selected Photodissociation Spectroscopy of Cluster Ions of Aromatic Molecules
Yoshiya Inokuchi and Kazuhiko Ohashi
Journal of the Spectroscopical Society of Japan 52 (2003) 333-348..
Papers
 Show All Papers >>
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, 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, 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, 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, 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.
Presentations
 Show All Presentations >>
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. Coordination structures and spin states of solvated Fe+ probed with infrared spectroscopy
Kazuhiko Ohashi, Jun Sasaki, Gun Yamamoto, Nobuhiro Koga, Kazuki Furukawa, Ken Judai, Nobuyuki Nishi, Hiroshi Sekiya
Gordon Research Conferences on Molecular & Ionic Clusters 2012.
24. Coordination Chemistry of V+ Probed with IR Spectroscopy and Quantum Chemical Calculations
Kazuhiko Ohashi, Nobuhiro Koga, Kazuki Furukawa, Ken Judai, Nobuyuki Nishi, Hiroshi Sekiya
The Third Asian Spectroscopy Conference.
25. IR photodissociation spectroscopy of solvated transition-metal ions: coordinatively unsaturated Co+ in Co+(H2O)n
Kazuhiko Ohashi, Kazuki Furukawa, Nobuhiro Koga, Ken Judai, Nobuyuki Nishi, and Hiroshi Sekiya
The 5th Symposium on Molecular Science for Supra Functional Systems.
26. Infrared spectra and structures of hydrated metal ions
Kazuhiko Ohashi
Mini-symposium on hydration of gas phase ions, metals to peptides.
27. Coordinatively unsaturated cobalt ion in Co+(H2O)n probed with infrared photodissociation spectroscopy
Kazuhiko Ohashi, Kazuki Furukawa, Nobuhiro Koga, Ken Judai, Nobuyuki Nishi, and Hiroshi Sekiya
XXIII International Symposium on Molecular Beams (ISMB 2011).
28. Infrared spectroscopy of ammonia-solvated transition-metal ions
Kazuhiko Ohashi, Toshitaka Imamura, Kazuya Inoue, Ken Judai, Nobuyuki Nishi, and Hiroshi Sekiya
2010 International Chemical Congress of Pacific Basin Societies.
29. Coordination and solvation of the gas-phase vanadium ion: infrared spectroscopy of V+(NH3)n
Nobuhiro Koga, Kazuhiko Ohashi, Toshitaka Imamura, Kazuki Furukawa, Ken Judai, Nobuyuki Nishi, Hiroshi Sekiya
2010 International Chemical Congress of Pacific Basin Societies.
30. IR photodissociation spectra and hydration structures of Co+(H2O)n
Kazuki Furukawa, Kazuhiko Ohashi, Nobuhiro Koga, Toshitaka Imamura, Ken Judai, Nobuyuki Nishi, Hiroshi Sekiya
2010 International Chemical Congress of Pacific Basin Societies.
31. Coordination and solvation of V+ in the gas phase: Infrared spectroscopy of V+(NH3)n
Nobuhiro Koga, Kazuhiko Ohashi, Kazuki Furukawa, Toshitaka Imamura, Ken Judai, Nobuyuki Nishi, Hiroshi Sekiya
Molecular Photoscience Research Center International Symposium "New Horizons of Cluster Chemistry".
32. Hydration structures of the Co+ ion: IR photodissociation spectroscopy of Co+(H2O)n
Kazuki Furukawa, Kazuhiko Ohashi, Nobuhiro Koga, Toshitaka Imamura, Ken Judai, Nobuyuki Nishi, Hiroshi Sekiya
Molecular Photoscience Research Center International Symposium "New Horizons of Cluster Chemistry".
33. Expected and unexpected coordination chemistry of transition-metal ions
Kazuhiko Ohashi, Toshitaka Imamura, Nobuhiro Koga, Kazuki Furukawa, Ken Judai, Nobuyuki Nishi, Hiroshi Sekiya
2010 Molecular and Ionic Clusters Conference.
34. IR photodissociation spectra and coordination structures of hydrated cobalt ions
Kazuki Furukawa, Kazuhiko Ohashi, Nobuhiro Koga, Toshitaka Imamura, Ken Judai, Nobuyuki Nishi, Hiroshi Sekiya
2010 Molecular and Ionic Clusters Conference.
35. IR photodissociation spectroscopy of V+(H2O)n and V+(H2O)n・N2： Coordinative saturation of V+ with four H2O molecules
Kazuhiko Ohashi, Jun Sasaki, Toshitaka Imamura, Kazuki Furukawa, Ken Judai, Nobuyuki Nishi, Hiroshi Sekiya
The Second Asian Spectroscopy Conference.
36. Coordination chemistry of Ni+(NH3)n and Co+(NH3)n studied by IR spectroscopy
Toshitaka Imamura, Kazuhiko Ohashi, Jun Sasaki, Kazuya Inoue, Kazuki Furukawa, Ken Judai, Nobuyuki Nishi, Hiroshi Sekiya
The Second Asian Spectroscopy Conference.
37. IR photodissociation spectroscopy of Ag+(CH3OH)n: Does the Ag+ ion have an inherent coordination number?
Kazuki Furukawa, Kazuhiko Ohashi, Jun Sasaki, Toshitaka Imamura, Ken Judai, Nobuyuki Nishi, Hiroshi Sekiya
The Second Asian Spectroscopy Conference.
38. Coordination chemistry of transition-metal ions: IR spectroscopy of M+(NH3)n and M+(H2O)n (M = V, Ni, Cu, and Ag)
Kazuhiko Ohashi, Jun Sasaki, Toshitaka Imamura, Kazuki Furukawa, Ken Judai, Nobuyuki Nishi, Hiroshi Sekiya
The 3rd Symposium on Molecular Science for Supra Functional Systems.
39. Infrared spectroscopy of ammonia-solvated transition-metal ions
Kazuhiko Ohashi, Kazuya Inoue, Jun Sasaki, Toshitaka Imamura, Ken Judai, Nobuyuki Nishi, Hiroshi Sekiya
XIV International Symposium on Small Particles and Inorganic Clusters (ISSPIC XIV).
40. IR spectroscopy of ammonia-solvated transition-metal ions
Kazuhiko Ohashi, Kazuya Inoue, Jun Sasaki, Toshitaka Imamura, Ken Judai, Nobuyuki Nishi, Hiroshi Sekiya
Gordon Research Conferences on Molecular & Ionic Clusters 2008.
41. Coordination and Hydration of Fe+ studied by Infrared Spectroscopy of Fe+(H2O)n in the Gas Phase
Jun Sasaki, Kazuhiko Ohashi, Takuro Iino, Kazuya Inoue, Ken Judai, Nobuyuki Nishi, Hiroshi Sekiya
Joint Conference of JMLG/EMLG Meeting 2007 and 30th Symposium on Solution Chemistry of Japan.
42. Coordination of Noble-Metal Ions Probed with IR Spectroscopy of Mass-Selected M+(H2O)n (M = Cu, Ag) in the Gas Phase
Kazuhiko Ohashi, Takuro Iino, Kazuya Inoue, Ken Judai, Nobuyuki Nishi, Hiroshi Sekiya
Joint Conference of JMLG/EMLG Meeting 2007 and 30th Symposium on Solution Chemistry of Japan.
43. Coordination and Solvation of Noble-Metal Ions in the Gas Phase: Infrared Spectroscopy of Cu+(NH3)n and Ag+(NH3)n
Kazuya Inoue, Kazuhiko Ohashi, Takuro Iino, Jun Sasaki, Ken Judai, Nobuyuki Nishi, Hiroshi Sekiya
Joint Conference of JMLG/EMLG Meeting 2007 and 30th Symposium on Solution Chemistry of Japan.
44. Infrared Spectra and Structures of Solvated Metal Ions: Direct Coordination vs. Solvation through Hydrogen Bonding
Kazuhiko Ohashi, Takuro Iino, Kazuya Inoue, Ken Judai, Nobuyuki Nishi, and Hiroshi Sekiya
Okazaki Conference 2007 "Molecular Science and Chemical Biology of Biomolecular Function".
45. Coordination and Solvation in M+(H2O)n (M = Cu, Ag, Fe) Probed with Infrared Photodissociation Spectroscopy
Kazuhiko Ohashi, Takuro Iino, Kazuya Inoue, Jun Sasaki, Ken Judai, Nobuyuki Nishi, and Hiroshi Sekiya
XXII International Symposium on Molecular Beams (ISMB 2007).
46. Coordination and Solvation of Noble Metal Ions: Infrared Spectroscopy of Cu+(H2O)n and Ag+(H2O)n
Kazuhiko Ohashi, Takuro Iino, Kazuya Inoue, Hiroshi Sekiya, Ken Judai, Nobuyuki Nishi
XIII International Symposium on Small Particles and Inorganic Clusters.
47. Coordination and Solvation Structures of Noble Metal Ions
Kazuhiko Ohashi, Takuro Iino, Kazuya Inoue, Ken Judai, Nobuyuki Nishi, Hiroshi Sekiya
Sendai International Symposium on Molecular Cluster Spectroscopy.
48. Vibrational spectroscopy and solvation structures of metal ions
Kazuhiko Ohashi
2005 International Chemical Congress of Pacific Basin Societies.
49. IR photodissociation spectra and solvation structures of Cu+(H2O)n
Takuro Iino, Kazuhiko Ohashi, Yutaka Mune, Yoshiya Inokuchi, Ken Judai, Nobuyuki Nishi, Hiroshi Sekiya
2005 International Chemical Congress of Pacific Basin Societies.
50. Infrared photodissociation spectroscopy of [Al(NH3)n]+
Yukata Mune, Kazuhiko Ohashi, Takuro Iino, Yoshiya Inokuchi, Ken Judai, Nobuyuki Nishi, Hiroshi Sekiya
2005 International Chemical Congress of Pacific Basin Societies.
51. Coordination and Solvation of Copper Ions: Infrared Photodissociation Spectroscopy of Cu+(H2O)n
Kazuhiko Ohashi, Takuro Iino, Yutaka Mune, Yoshiya Inokuchi, Ken Judai, Nobuyuki Nishi, and Hiroshi Sekiya
XXII International Conference on Photochemistry.
52. Site-Selective Solvation in Mg+(CH3OH)n and Mg+(NH3)n
Kazuhiko Ohashi, Yoshiya Inokuchi, Yutaka Mune, Hironobu Machinaga, Kazutaka Terabaru, Nobuyuki Nishi, and Hiroshi Sekiya
Internatinal Symposium on Stereodynamics of Chemical Reactions 2004.
53. Binding Features of an Excess Proton in (CH3NH2)nH+ and (CH3OH)nH+
Kazuhiko Ohashi, Yoshiya Inokuchi, Hironobu Machinaga, Takayuki Michi, Nobuyuki Nishi, and Hiroshi Sekiya
Okazaki Conference 2003 "International Symposium on Functional Clusters and Cluster-Based Nano-Materials".
54. Infrared photodissociation spectroscopy of aniline ion complexes: Preference between π-type and σ-type hydrogen bonds
Yoshiki Honkawa, Yoshiya Inokuchi, Kazuhiko Ohashi, Nobuyuki Nishi, and Hiroshi Sekiya
16th Joint Seminar between the Kyushu Branch of the Chemical Society of Japan and the Pusan Branch of the Korean Chemical Society.
55. Hydrogen bonding and charge resonance interactions in aromatic cluster ions
Kazuhiko Ohashi
2000 International Chemical Congress of Pacific Basin Societies.
56. Hydrogen bonding and charge resonance interactions in the heterodimer ions of benzene with benzyl alcohol, benzyl amine, and benzyl cyanide
Kazuyuki Hino, Yoshiya Inokuchi, Kazuhiko Ohashi, Hironobu Izutsu, Nobuyuki Nishi, and Hiroshi Sekiya
2000 International Chemical Congress of Pacific Basin Societies.
57. Hydrogen bonding and charge resonance interactions in aromatic cluster ions
Kazuhiko Ohashi, Yoshiya Inokuchi, Nobuyuki Nishi, and Hiroshi Sekiya
Okazaki COE International Conference "Interplay of Theories and Experiments in Structural Analyses of Molecular Clusters".
58. Application of Statistical Theories to Photodissociation of Benzene Cluster Ions
Kazuhiko Ohashi and Hiroshi Sekiya
International Symposium on Photo-Dynamics and Reaction Dynamics of Molecules.
59. Charge Delocalization and Photoinduced Charge Hopping in Aromatic Cluster Ions
Yoshiya Inokuchi, Kazuhiko Ohashi, and Nobuyuki Nishi
1998 Asian-Pacific Forum on Science and Technology, Optical Probing and Creation of Advanced Photoactive Materials.
Membership in Academic Society
  • The Chemical Society of Japan
  • The Physical Society of Japan
  • Japan Society of Molecular Science
  • The Spectroscopical Society of Japan
  • The Society for Atomic Collision Research
Educational
Educational Activities
I have the following courses/classes.

for graduate students:
"Photodissociation and Molecular Reaction Dynamics" (lecture)
"Research review" (presentation by students)
"Research administration" (exercise)
"Special study in chemistry I & II"
(supervising works for the degree of doctor and master)

for undergraduate students:
"Introduction to quantum chemistry" (lecture)
"Quantum chemistry I" (lecture)
"Quantum chemistry II" (lecture)
"Molecular spectroscopy (lecture)
"Molecular theory" (lecture)
"Introductory chemistry" (lecture)
"Chemical materials and human environment" (lecture)
"Experiments in structural chemistry" (experiments by students)
"Special study in chemistry"
(supervising works for the degree of bachelorship)

for students in general education course:
"Inorganic material chemistry" (lecture)
"Basic chemical bonding" (lecture)
"Natural science on environmental problems" (lecture)
"Frontiers of chemistry" (lecture)
"Core Seminar" (lecture)
Social
Professional and Outreach Activities
2016.6～
Member of International Advisory Committee of "International Symposium on Molecular Beams"

2012.4～2015.3
Joint studies under JSPS Core-to-Core Program "Photoionisation-induced switch in aromatic molecule-solvent recognition"

1999, 1997
Joint studies under Japan-US Cooperative Research Project "Coorperative Photoconversion and Photosynthesis".


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