• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

OHSHIMO KEIJIRO  大下 慶次郎

… Alternative Names

大下 慶次郎  オオシモ ケイジロウ

Ohshimo Keijiro  大下 慶次郎

Less
Researcher Number 40373279
Other IDs
  • ORCIDhttps://orcid.org/0000-0002-2397-6896
Affiliation (Current) 2025: 北海道教育大学, 教育学部, 准教授
Affiliation (based on the past Project Information) *help 2025: 北海道教育大学, 教育学部, 准教授
2021 – 2022: 東北大学, 理学研究科, 助教
2017 – 2018: 東北大学, 理学研究科, 助教
2016: 東北大学, 高度教養教育・学生支援機構, 助教
2005: 理研, 研究員
Review Section/Research Field
Principal Investigator
Physical chemistry / Basic Section 34020:Analytical chemistry-related / Transformative Research Areas, Section (II)
Keywords
Principal Investigator
質量分析 / 異性体分離 / イオン移動度質量分析 / マルチプレックス計測 / 立体構造 / タンパク質 / イオン移動度分析 / 重合反応 / イオンモビリティ分析 / 反応速度定数 … More / アセチレン / 負イオン / 炭素クラスター / イオンー分子反応 / 物理化学 / エレクトロスプレーイオン化 / イオントラップ / 溶媒和 / 配位構造 / 構造異性体分離 Less
  • Research Projects

    (4 results)
  • Research Products

    (38 results)
  • Co-Researchers

    (4 People)
  •  Development of multiplex ion mobility-mass spectrometry for observation of protein conformational changesPrincipal Investigator

    • Principal Investigator
      大下 慶次郎
    • Project Period (FY)
      2025 – 2027
    • Research Category
      Grant-in-Aid for Scientific Research (C)
    • Review Section
      Basic Section 34020:Analytical chemistry-related
    • Research Institution
      Hokkaido University of Education
  •  Quantitative Observation of Temperature Dependence of Rate Constants in Carbon Chain Growth Reactions of Negatively Charged Molecular and Cluster IonsPrincipal Investigator

    • Principal Investigator
      大下 慶次郎
    • Project Period (FY)
      2021 – 2022
    • Research Category
      Grant-in-Aid for Transformative Research Areas (A)
    • Review Section
      Transformative Research Areas, Section (II)
    • Research Institution
      Tohoku University
  •  Three-dimensional structures of solvated ions with high molecular weight observed by cryogenic ion mobility mass spectrometryPrincipal Investigator

    • Principal Investigator
      Ohshimo Keijiro
    • Project Period (FY)
      2016 – 2018
    • Research Category
      Grant-in-Aid for Scientific Research (C)
    • Research Field
      Physical chemistry
    • Research Institution
      Tohoku University
  •  溶液の光電子分光法による溶質・溶媒分子間相互作用の研究Principal Investigator

    • Principal Investigator
      大下 慶次郎
    • Project Period (FY)
      2005
    • Research Category
      Grant-in-Aid for Young Scientists (B)
    • Research Field
      Physical chemistry
    • Research Institution
      The Institute of Physical and Chemical Research

All 2023 2022 2021 2019 2018 2017 2016

All Journal Article Presentation

  • [Journal Article] Large Conformational Change in the Isomerization of Flexible Crown Ether Observed at Low Temperature2022

    • Author(s)
      Ito Ryosuke、He Xi、Ohshimo Keijiro、Misaizu Fuminori
    • Journal Title

      The Journal of Physical Chemistry A

      Volume: 126 Issue: 27 Pages: 4359-4366

    • DOI

      10.1021/acs.jpca.2c02271

    • Peer Reviewed / Open Access
    • Data Source
      KAKENHI-PROJECT-21K03503, KAKENHI-PROJECT-21K03520, KAKENHI-PUBLICLY-21H05418
  • [Journal Article] Geometrical Structures of Gas Phase Cerium Oxide Cluster Cations after Reaction with Nitric Oxide Studied by Ion Mobility Mass Spectrometry2022

    • Author(s)
      Toshiaki Nagata, Jenna W. J. Wu, Motoyoshi Nakano, Keijiro Ohshimo, and Fuminori Misaizu
    • Journal Title

      Journal of Physical Chemistry A

      Volume: 126 Issue: 7 Pages: 1204-1210

    • DOI

      10.1021/acs.jpca.1c10835

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-21K03503, KAKENHI-PROJECT-21K14583, KAKENHI-PUBLICLY-21H05418
  • [Journal Article] Structures of Dibenzo-24-crown-8 Complex with an NH4+ Ion Studied by Cryogenic Ion Mobility-Mass Spectrometry2022

    • Author(s)
      R. Ito, K. Ohshimo, F. Misaizu
    • Journal Title

      Chem. Phys. Lett.

      Volume: 794 Pages: 139510-139510

    • DOI

      10.1016/j.cplett.2022.139510

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-21K03520, KAKENHI-PUBLICLY-21H05418
  • [Journal Article] Time-of-flight mass spectrometry diagnostics in deep oscillation magnetron sputtering (DOMS) of titanium2022

    • Author(s)
      Sanekata Masaomi、Nakagomi Yuki、Hirayama Mutsuki、Nishida Hiroshi、Nishimiya Nobuo、Tona Masahide、Yamamoto Hiroaki、Tsukamoto Keizo、Fuke Kiyokazu、Ohshimo Keijiro、Koyasu Kiichirou、Misaizu Fuminori
    • Journal Title

      Journal of Applied Physics

      Volume: 131 Issue: 24 Pages: 243301-243301

    • DOI

      10.1063/5.0089592

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-21K03503, KAKENHI-PROJECT-21K03520, KAKENHI-PUBLICLY-21H05418
  • [Journal Article] Structural assignments of yttrium oxide cluster cations studied by ion mobility mass spectrometry2022

    • Author(s)
      Yotaro Misao, Toshiaki Nagata, Motoyoshi Nakano, Keijiro Ohshimo, Fuminori Misaizu
    • Journal Title

      Physical Chemistry Chemical Physics

      Volume: - Issue: 18 Pages: 11096-11103

    • DOI

      10.1039/d1cp05929g

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-21K14583, KAKENHI-PROJECT-21K03503, KAKENHI-PROJECT-21K03520, KAKENHI-PUBLICLY-21H05418
  • [Journal Article] Ion Mobility-Mass Spectrometry of Protonated Molecules―Intramolecular Proton Transfer by Bimolecular Reaction―2022

    • Author(s)
      Ohshimo Keijiro、Miyazaki Shun、Sato Ryosuke、Hattori Keigo、Misaizu Fuminori
    • Journal Title

      Journal of the Mass Spectrometry Society of Japan

      Volume: 70 Issue: 1 Pages: 36-42

    • DOI

      10.5702/massspec.S22-07

    • ISSN
      1340-8097, 1880-4225, 1884-3271
    • Year and Date
      2022-03-01
    • Language
      Japanese
    • Peer Reviewed
    • Data Source
      KAKENHI-PUBLICLY-21H05418
  • [Journal Article] Photofragment ion imaging in vibrational predissociation of the H2O+Ar complex ion2021

    • Author(s)
      Nakashima Yuji、Ito Yuri、Kominato Mizuhiro、Ohshimo Keijiro、Misaizu Fuminori
    • Journal Title

      The Journal of Chemical Physics

      Volume: 154 Issue: 17 Pages: 174301-174301

    • DOI

      10.1063/5.0049609

    • Peer Reviewed
    • Data Source
      KAKENHI-PUBLICLY-21H05418
  • [Journal Article] Conformer Separation of Dibenzo-Crown-Ether Complexes with Na+ and K+ ions Studied by Cryogenic Ion Mobility-Mass Spectrometry2021

    • Author(s)
      K. Ohshimo, X. He, R. Ito, F. Misaizu
    • Journal Title

      J. Phys. Chem. A

      Volume: 125 Issue: 17 Pages: 3718-3725

    • DOI

      10.1021/acs.jpca.1c02300

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-21K03520, KAKENHI-PUBLICLY-21H05418
  • [Journal Article] Dependence of Optical Emission Spectra on Argon Gas Pressure during Modulated Pulsed Power Magnetron Sputtering (MPPMS)2021

    • Author(s)
      Masaomi Sanekata, Hiroshi Nishida, Yuki Nakagomi, Yoshihiro Hirai, Nobuo Nishimiya, Masahide Tona, Hiroaki Yamamoto, Naoki Hirata, Keizo Tsukamoto, Keijiro Ohshimo, Fuminori Misaizu, and Kiyokazu Fuke
    • Journal Title

      Plasma

      Volume: 4 Issue: 2 Pages: 269-280

    • DOI

      10.3390/plasma4020018

    • Peer Reviewed / Open Access
    • Data Source
      KAKENHI-PROJECT-21K03503, KAKENHI-PROJECT-21K03520, KAKENHI-PUBLICLY-21H05418
  • [Journal Article] Visible Photodissociation of the CO2 Dimer Cation: Fast and Slow Dissociation Dynamics in the Excited State2019

    • Author(s)
      Y. Nakashima, K. Okutsu, K. Fujimoto, Y. Ito, M. Kanno, M. Nakano, K. Ohshimo, H. Kono, F. Misaizu
    • Journal Title

      Phys. Chem. Chem. Phys.

      Volume: 21 Issue: 6 Pages: 3083-3091

    • DOI

      10.1039/c8cp07068g

    • Peer Reviewed / Open Access
    • Data Source
      KAKENHI-PROJECT-18K03598, KAKENHI-PROJECT-18K14173, KAKENHI-PROJECT-17J02032, KAKENHI-PROJECT-16K05641, KAKENHI-PROJECT-16H04091
  • [Journal Article] Geometrical structures and molecular adsorption reactions of alkali-halide cluster ions investigated by ion mobility-mass spectrometry2019

    • Author(s)
      Keijiro Ohshimo, Tohru Takahashi, Motoyoshi Nakano, Fuminori Misaizu
    • Journal Title

      Bull. Soc. Sea Water Sci. Jpn.

      Volume: 73 Pages: 59-64

    • NAID

      130007920123

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-16K05641
  • [Journal Article] Small Carbon Nano-Onions: An Ion Mobility Mass Spectrometric Study2018

    • Author(s)
      Moriyama Ryoichi、Wu Jenna W. J.、Nakano Motoyoshi、Ohshimo Keijiro、Misaizu Fuminori
    • Journal Title

      The Journal of Physical Chemistry C

      Volume: 122 Issue: 9 Pages: 5195-5200

    • DOI

      10.1021/acs.jpcc.8b00597

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-16K05641, KAKENHI-PROJECT-18K03598
  • [Journal Article] Ion Imaging of MgI+ Photofragment in Ultraviolet Photodissociation Mass-selected Mg+ICH3 Complex2018

    • Author(s)
      K. Okutsu, K. Yamazaki, M. Nakano, K. Ohshimo, F. Misaizu
    • Journal Title

      J. Phys. Chem. A

      Volume: 122 Issue: 22 Pages: 4948-4953

    • DOI

      10.1021/acs.jpca.8b01944

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-18K03598, KAKENHI-PROJECT-18K14173, KAKENHI-PROJECT-17J02032, KAKENHI-PROJECT-16K05641
  • [Journal Article] Stable Compositions and Structures of Copper Oxide Cluster Cations CunOm+ (n = 2-8) Studied by Ion Mobility Mass Spectrometry2018

    • Author(s)
      M. A. Latif, J. W. J. Wu, R. Moriyama, M. Nakano, K. Ohshimo, F. Misaizu
    • Journal Title

      ACS Omega

      Volume: 3 Issue: 12 Pages: 18705-18713

    • DOI

      10.1021/acsomega.8b02466

    • Peer Reviewed / Open Access
    • Data Source
      KAKENHI-PROJECT-18K03598, KAKENHI-PROJECT-18K14173, KAKENHI-PROJECT-16K05641
  • [Journal Article] Correlation between Electronic Shell Structure and Inertness of Cun+ toward O2 Adsorption at n = 15, 21, 41, and 492018

    • Author(s)
      Ohshimo Keijiro、Akimoto Kengo、Ogawa Masato、Iwasaki Wataru、Yamamoto Hiroaki、Tona Masahide、Tsukamoto Keizo、Nakano Motoyoshi、Misaizu Fuminori
    • Journal Title

      The Journal of Physical Chemistry A

      Volume: 122 Issue: 11 Pages: 2927-2932

    • DOI

      10.1021/acs.jpca.8b00246

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-16K05641
  • [Journal Article] Development of a linear-type double reflectron for focused imaging of photofragment ions from mass-selected complex ions2017

    • Author(s)
      Okutsu Kenichi、Nakashima Yuji、Yamazaki Kenichiro、Fujimoto Keita、Nakano Motoyoshi、Ohshimo Keijiro、Misaizu Fuminori
    • Journal Title

      Review of Scientific Instruments

      Volume: 88 Issue: 5 Pages: 053105-053105

    • DOI

      10.1063/1.4982706

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-16K05641, KAKENHI-PROJECT-17J02032
  • [Journal Article] Mass spectrometric study of N 2 -adsorption on copper cluster cations formed by modulated pulsed power magnetron sputtering in aggregation cell2017

    • Author(s)
      Ohshimo Keijiro、Mizuuchi Isamu、Akimoto Kengo、Tsukamoto Keizo、Tona Masahide、Yamamoto Hiroaki、Nakano Motoyoshi、Misaizu Fuminori
    • Journal Title

      Chemical Physics Letters

      Volume: 682 Pages: 60-63

    • DOI

      10.1016/j.cplett.2017.06.012

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-16K05641
  • [Journal Article] Photofragment ion imaging from mass-selected Mg+BrCH3 complex: Dissociation mechanism following photoinduced charge transfer2017

    • Author(s)
      Kenichi Okutsu, Kenichiro Yamazaki, Keijiro Ohshimo, Fuminori Misaizu
    • Journal Title

      Journal of Chemical Physics

      Volume: 146 Issue: 2 Pages: 024301-024301

    • DOI

      10.1063/1.4973386

    • Peer Reviewed / Acknowledgement Compliant
    • Data Source
      KAKENHI-PROJECT-16K05641
  • [Journal Article] Geometrical Structures of Gas Phase Chromium Oxide Cluster Anions Studied by Ion Mobility Mass Spectrometry2017

    • Author(s)
      Moriyama Ryoichi、Sato Ryuki、Nakano Motoyoshi、Ohshimo Keijiro、Misaizu Fuminori
    • Journal Title

      The Journal of Physical Chemistry A

      Volume: 121 Issue: 30 Pages: 5605-5613

    • DOI

      10.1021/acs.jpca.7b02431

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-16K05641
  • [Journal Article] Compositions and structures of niobium oxide cluster ions, NbmOn±, (m = 2-12), revealed by ion mobility mass spectrometry2017

    • Author(s)
      Wu Jenna W. J.、Moriyama Ryoichi、Nakano Motoyoshi、Ohshimo Keijiro、Misaizu Fuminori
    • Journal Title

      Physical Chemistry Chemical Physics

      Volume: 19 Issue: 36 Pages: 24903-24914

    • DOI

      10.1039/c7cp04017b

    • Peer Reviewed
    • Data Source
      KAKENHI-PROJECT-16K05641
  • [Journal Article] Structures of Vanadium Oxide Cluster Ions up to Nanometer Diameter Investigated by Ion Mobility Mass Spectrometry2016

    • Author(s)
      Ryoichi Moriyama, Jenna W. J. Wu, Keijiro Ohshimo, Fuminori Misaizu
    • Journal Title

      Bulletin of Chemical Society of Japan

      Volume: 89 Issue: 10 Pages: 1225-1229

    • DOI

      10.1246/bcsj.20160211

    • NAID

      130005332392

    • Peer Reviewed / Acknowledgement Compliant
    • Data Source
      KAKENHI-PROJECT-16K05641
  • [Journal Article] Compositions and Structures of Vanadium Oxide Cluster Ions VmOn+/- (m = 2-20) Investigated by Ion Mobility Mass Spectrometry2016

    • Author(s)
      Jenna W. J. Wu, Ryoichi Moriyama, Hiroshi Tahara, Keijiro Ohshimo, Fuminori Misiazu
    • Journal Title

      Journal of Physical Chemistry A

      Volume: 120 Issue: 21 Pages: 3788-3796

    • DOI

      10.1021/acs.jpca.6b03403

    • Peer Reviewed / Acknowledgement Compliant
    • Data Source
      KAKENHI-PROJECT-16K05641
  • [Journal Article] Stable compositions and geometrical structures of titanium oxide cluster cations and anions studied by ion mobility mass spectrometry2016

    • Author(s)
      Keijiro Ohshimo, Naoya Norimasa, Ryoichi Moriyama, Fuminori Misaizu
    • Journal Title

      Journal of Chemical Physics

      Volume: 144 Issue: 19 Pages: 194305-194305

    • DOI

      10.1063/1.4949269

    • Peer Reviewed / Acknowledgement Compliant
    • Data Source
      KAKENHI-PROJECT-16K05641
  • [Presentation] 低温イオントラップとイオン移動度質量分析を用いたプロトン付加アミノ安息香酸におけるプロトン移動の温度依存性の研究2023

    • Author(s)
      大下 慶次郎、高崎 佑也、角田 健吾、伊藤 亮佑、美齊津 文典
    • Organizer
      日本化学会第103春季年会
    • Data Source
      KAKENHI-PUBLICLY-21H05418
  • [Presentation] 低温イオン移動度質量分析を用いたプロトン付加アミノ安息香酸における分子内プロトン移動の研究2022

    • Author(s)
      大下 慶次郎、高崎 佑也、佐藤 良亮、美齊津 文典
    • Organizer
      第16回分子科学討論会
    • Data Source
      KAKENHI-PUBLICLY-21H05418
  • [Presentation] イオン移動度質量分析を用いたプロトン付加分子におけるプロトン移動反応の研究2022

    • Author(s)
      大下 慶次郎、佐藤 良亮、高崎 佑也、美齊津 文典
    • Organizer
      第70回質量分析総合討論会
    • Invited
    • Data Source
      KAKENHI-PUBLICLY-21H05418
  • [Presentation] 温度可変低温イオン移動度質量分析によるホスト-ゲスト錯体の異性化反応の研究2021

    • Author(s)
      大下 慶次郎,伊藤 亮佑,He Xi,美齊津 文典
    • Organizer
      原子衝突学会第46回年会
    • Data Source
      KAKENHI-PUBLICLY-21H05418
  • [Presentation] プロトン付加分子のイオン移動度質量分析-イオン分子反応による分子内プロトン移動-2021

    • Author(s)
      大下 慶次郎
    • Organizer
      日本質量分析学会第77回イオン反応研究会
    • Invited
    • Data Source
      KAKENHI-PUBLICLY-21H05418
  • [Presentation] イオン移動度質量分析によるジベンゾクラウンエーテル-Na+, K+錯体の構造研究2021

    • Author(s)
      大下 慶次郎、He Xi、伊藤 亮佑、美齊津 文典
    • Organizer
      第69回質量分析総合討論会
    • Data Source
      KAKENHI-PUBLICLY-21H05418
  • [Presentation] イオン移動度質量分析を用いたホスト-ゲスト化合物の構造と異性化反応の研究2021

    • Author(s)
      大下 慶次郎
    • Organizer
      第9回イオン移動度研究会
    • Invited
    • Data Source
      KAKENHI-PUBLICLY-21H05418
  • [Presentation] イオン移動度質量分析を用いたアルカリ金属イオンと直鎖アルカンジオールからなる錯体の配位構造2019

    • Author(s)
      大下慶次郎, 矢部謙太, 宮﨑舜, 田井中創太, 長谷川皓平, 美齊津文典
    • Organizer
      日本化学会第99春季年会
    • Data Source
      KAKENHI-PROJECT-16K05641
  • [Presentation] エレクトロスプレーイオン化法により生成した有機分子イオンの低温イオン移動度質量分析2018

    • Author(s)
      矢部 謙太、西 結人、宮崎 舜、田井中 創太、大下 慶次郎、美齊津 文典
    • Organizer
      日本化学会第98春季年会
    • Data Source
      KAKENHI-PROJECT-16K05641
  • [Presentation] エレクトロスプレーイオン化法により生成した有機分子イオンの低温イオン移動度質量分析2018

    • Author(s)
      大下 慶次郎,西 結人,矢部 謙太,宮崎 舜,田井中 創太,美齊津 文典
    • Organizer
      第7回イオン移動度研究会
    • Data Source
      KAKENHI-PROJECT-16K05641
  • [Presentation] 水和された高分子イオンの構造解析を目的とした低温イオン移動度質量分析装置の製作2017

    • Author(s)
      大下 慶次郎、西 結人、矢部 謙太、美齊津 文典
    • Organizer
      第6回イオン移動度研究会
    • Data Source
      KAKENHI-PROJECT-16K05641
  • [Presentation] 水和高分子イオンの構造解析を目的とした低温イオン移動度質量分析計の制作2017

    • Author(s)
      西 結人、矢部 謙太、大下 慶次郎、美齊津 文典
    • Organizer
      第65回質量分析総合討論会
    • Data Source
      KAKENHI-PROJECT-16K05641
  • [Presentation] エレクトロスプレーイオン化法を用いて生成した水和高分子イオンの低温イオン移動度質量分析装置の開発2017

    • Author(s)
      矢部 謙太、西 結人、田井中 創太、宮崎 舜、大下 慶次郎、美齊津 文典
    • Organizer
      第11回分子科学討論会
    • Data Source
      KAKENHI-PROJECT-16K05641
  • [Presentation] エレクトロスプレーイオン化法で生成したアルカリハライドクラスターイオンの構造研究2017

    • Author(s)
      宮﨑 舜、田井中 創太、矢部 謙太、西 結人、大下 慶次郎、美齊津 文典
    • Organizer
      平成29年度化学系学協会東北大会
    • Data Source
      KAKENHI-PROJECT-16K05641
  • [Presentation] エレクトロスプレーイオン源と四重極イオントラップを用いた低温イオン移動度質量分析装置の製作2017

    • Author(s)
      大下 慶次郎、西 結人、矢部 謙太、中野 元善、美齊津 文典
    • Organizer
      日本化学会第97春季年会
    • Place of Presentation
      慶應義塾大学(神奈川県横浜市)
    • Data Source
      KAKENHI-PROJECT-16K05641
  • 1.  美斎津 文典
    # of Collaborated Projects: 0 results
    # of Collaborated Products: 9 results
  • 2.  實方 真臣
    # of Collaborated Projects: 0 results
    # of Collaborated Products: 2 results
  • 3.  西宮 信夫
    # of Collaborated Projects: 0 results
    # of Collaborated Products: 2 results
  • 4.  永田 利明
    # of Collaborated Projects: 0 results
    # of Collaborated Products: 1 results

URL: 

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi