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K

Keisuke Hirata

institute of science tokyo

19H-index
105Paper Count
1.1KCitation Count
Published Papers 23
Publication Date
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Probing hydration-driven ion recognition using cryogenic ion trap infrared spectroscopy
errphys. chem. chem. phys.
IF0
err2026-06-01
err0
errOAAI
errKeisuke Hirata; James M. Lisy; Masaaki Fujii; Shun-ichi Ishiuchi
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Metal-Ion–Monosaccharide Interactions: Selective Formation of a Specific Coordination Motif in Carbohydrate Recognition
errThe Journal of Physical Chemistry Letters
IF0
err2026-05-09
err0
PREAI
errTaisei Takahashi; Keisuke Hirata; Shun-ichi Ishiuchi
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Infrared and Ultraviolet Spectra of the Monohydrated N-Methyl-Dopamine-Methylation Effect on Structure and Excited State Dynamics
errJOURNAL OF PHYSICAL CHEMISTRY A
IF2.8
err2025-12-01
err0
PREAI
errHirata, Keisuke; Kasai, Ken-ichi; Fujii, Masaaki; Gregoire, Gilles; Ishiuchi, Shun-ichi
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Probing the Triplet State by Cryogenic Ion Trap IR Spectroscopy-Application to Protonated Lumiflavin
errJOURNAL OF PHYSICAL CHEMISTRY LETTERS
IF4.6
err2025-11-01
err0
PREAI
errOhara, Sotaro; Hirata, Keisuke; Gregoire, Gilles; Fujii, Masaaki; Dopfer, Otto; Ishiuchi, Shun-ichi
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errSave
The Deprotonation Sites of Gas Phase Uridine and Pseudouridine: Implications for mRNA Vaccines
errThe Journal of Physical Chemistry Letters
IF0
err2025-10-13
err0
PREAI
errYuika Okura; Garrett D. Santis; Xiao-Fei Gao; Wenjin Cao; Keisuke Hirata; Shun-ichi Ishiuchi; Masaaki Fujii; Xue-Bin Wang; Sotiris S. Xantheas
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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
errJOURNAL OF THE AMERICAN CHEMICAL SOCIETY
IF15.6
err2025-04-15
err0
PREAI
errOkura, Yuika; Hallsten, Madisen N.; Santis, Garrett D.; Hirata, Keisuke; Ishiuchi, Shun-Ichi
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i-Motif DNA in isolated hemiprotonated cytosine dimers, studied using IR spectroscopy and theoretical calculations
errPHYSICAL CHEMISTRY CHEMICAL PHYSICS
IF2.9
err2025-01-01
err0
PREAI
errVidal, Ana D. Parejo; Okura, Yuika; Hirata, Keisuke; Miriyala, Vijay Madhav; Hobza, Pavel; Fujii, Masaaki; de Vries, Mattanjah S.
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Unbuckling the 18-Crown-6 Ether Belt Around Metal Ions: Forging the Connection to the Condensed Phase
errJOURNAL OF THE AMERICAN CHEMICAL SOCIETY
IF15.6
err2024-11-25
err0
PREAI
errSakuma, Ryu; Hirata, Keisuke; Lisy, James M.; Fujii, Masaaki; Ishiuchi, Shun-ichi
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Switching of Protonation Sites in Hydrated Nicotine via a Grotthuss Mechanism
errJOURNAL OF THE AMERICAN CHEMICAL SOCIETY
IF15.6
err2024-01-23
err4
errOAAI
errOkura, Yuika; Santis, Garrett D.; Hirata, Keisuke; Melissas, Vasilios S.; Ishiuchi, Shun-ichi; Fujii, Masaaki; Xantheas, Sotiris S.
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Conformational preference of 2-(4-methoxyphenyl)ethanol studied by supersonic jet spectroscopy: Intramolecular OH/π interaction
errJOURNAL OF CHEMICAL PHYSICS
IF3.1
err2024-01-08
err0
PREAI
errNagasawa, Hironari; Ogawa, Sakuya; Kashihara, Wataru; Isozaki, Tasuku; Hirata, Keisuke; Ishiuchi, Shun-ichi; Fujii, Masaaki; Suzuki, Tadashi
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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
errCHEMICAL SCIENCE
IF7.4
err2024-01-01
err2
errOAAI
errHirata, Keisuke; Akasaka, Kyota; Dopfer, Otto; Ishiuchi, Shun-ichi; Fujii, Masaaki
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Thermodynamics and Kinetics of a Partial Peptide of K plus Channels: DFT Transition State Calculations Coupled with Temperature-Controlled Gas Phase Laser Spectroscopy
errBULLETIN OF THE CHEMICAL SOCIETY OF JAPAN
IF3.8
err2023-02-21
err0
PREAI
errSuzuki, Yukina; Hirata, Keisuke; Lisy, James M.; Ishiuchi, Shun-ichi; Fujii, Masaaki
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Structure of Gas Phase Monohydrated Nicotine: Implications for Nicotine?s Native Structure in the Acetylcholine Binding Protein
errJOURNAL OF THE AMERICAN CHEMICAL SOCIETY
IF15.6
err2022-08-31
err13
errOAAI
errSantis, Garrett D.; Takeda, Naoya; Hirata, Keisuke; Tsuruta, Kazuya; Ishiuchi, Shun-ichi; Xantheas, Sotiris S.; Fujii, Masaaki
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Photoinduced Thermionic Emission from [M25(SR)18]- (M = Au, Ag) Revealed by Anion Photoelectron Spectroscopy (vol 123, pg 13174, 2019)
errJOURNAL OF PHYSICAL CHEMISTRY C
IF3.2
err2022-05-16
err6
PREAI
errHirata, Keisuke; Ito, Shun; Kim, Kuenhee; Nakamura, Katsunosuke; Kitazawa, Hirokazu; Hayashi, Shun; Koyasu, Kiichirou; Tsukuda, Tatsuya
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Hydration-controlled excited-state relaxation in protonated dopamine studied by cryogenic ion spectroscopy
errJOURNAL OF CHEMICAL PHYSICS
IF3.1
err2021-10-15
err6
errOAAI
errHirata, Keisuke; Kasai, Ken-ichi; Gregoire, Gilles; Ishiuchi, Shun-ichi; Fujii, Masaaki
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Elucidating the Doping Effect on the Electronic Structure of Thiolate-Protected Silver Superatoms by Photoelectron Spectroscopy
errANGEWANDTE CHEMIE-INTERNATIONAL EDITION
IF16.9
err2019-07-24
err35
PREAI
errKim, Kuenhee; Hirata, Keisuke; Nakamura, Katsunosuke; Kitazawa, Hirokazu; Hayashi, Shun; Koyasu, Kiichirou; Tsukuda, Tatsuya
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Photoinduced Thermionic Emission from [M25(SR)18]- (M = Au, Ag) Revealed by Anion Photoelectron Spectroscopy
errJOURNAL OF PHYSICAL CHEMISTRY C
IF3.2
err2019-04-16
err21
PREAI
errHirata, Keisuke; Kim, Kuenhee; Nakamura, Katsunosuke; Kitazawa, Hirokazu; Hayashi, Shun; Koyasu, Kiichirou; Tsukuda, Tatsuya
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Interconversions of Structural Isomers of [PdAu8(PPh3)8]2+ and [Au9(PPh3)8]3+ Revealed by Ion Mobility Mass Spectrometry
errJOURNAL OF PHYSICAL CHEMISTRY C
IF3.2
err2018-09-14
err24
PREAI
errHirata, Keisuke; Chakraborty, Papri; Nag, Abhijit; Takano, Shinjiro; Koyasu, Kiichirou; Pradeep, Thalappil; Tsukuda, Tatsuya
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Collision-Induced Dissociation of Undecagold Clusters Protected by Mixed Ligands [Au11(PPh3) 8X2]+ (X = Cl, CCPh)
errACS OMEGA
IF4.3
err2018-06-11
err30
errOAAI
errTomihara, Ryohei; Hirata, Keisuke; Yamamoto, Hiroki; Takano, Shinjiro; Koyasu, Kiichirou; Tsukuda, Tatsuya
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Structural and Kinetic Studies of the Human Nudix Hydrolase MTH1 Reveal the Mechanism for Its Broad Substrate Specificity
errJOURNAL OF BIOLOGICAL CHEMISTRY
IF3.9
err2017-02-01
err28
errOAAI
errWaz, Shaimaa; Nakamura, Teruya; Hirata, Keisuke; Koga-Ogawa, Yukari; Chirifu, Mami; Arimori, Takao; Tamada, Taro; Ikemizu, Shinji; Nakabeppu, Yusaku; Yamagata, Yuriko
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Research Directions

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Co-authors
Cooperation Journals
P
Pavel Hobza
H-index: 115 · Papers: 704
T
Thalappil Pradeep
H-index: 87 · Papers: 813
H
Hiroshi Nishihara
H-index: 78 · Papers: 986
Y
Yusaku Nakabeppu
H-index: 77 · Papers: 400
T
Tatsuya Tsukuda
H-index: 74 · Papers: 495
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