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

The mechanism and new functions of quantum beam-induced reactions in heterogeneous fields

Research Project

Project/Area Number 18K11921
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 80040:Quantum beam science-related
Research InstitutionOsaka University

Principal Investigator

tojo sachiko  大阪大学, 産業科学研究所, 助教 (50197844)

Project Period (FY) 2018-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2020: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2019: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2018: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Keywords電子線 / パルスラジオリシス / 過渡吸収 / 過渡ラマン / 活性中間体 / 量子ビーム誘起反応 / 時間分解拡散反射分光 / 不均一反応場 / 過渡ラマン分光 / 過渡吸収分光
Outline of Final Research Achievements

Nanosecond electron pulse radiolysis system has been renewed to investigate the quantum beam-induced reactions in heterogeneous fields. The transient absorption spectra of the various intermediates were observed to the 1000 nm during single-shot electron pulse.
The oxidation and dimerization of the sulfur compounds were studied using transient absorption and time-resolved resonance Raman spectroscopy (TR3) during pulse radiolysis and density functional theory calculations. The formation of dimer radical cations with two-center three-electron bond between two sulfur atoms were observed with TR3 measurements during pulse radiolysis. The dynamics of proton transfer in adenosine radical cation were studied in both acidic and neutral pH solutions by using transient absorption and TR3 methods in combination with pulse radiolysis.
The time-resolved infrared spectroscopy was introduced to pulse radiolysis system.

Academic Significance and Societal Importance of the Research Achievements

電子線パルスラジオリシス拡散反射法による様々な材料・状態・環境下におけるパルスラジオリシス測定の発展により分子レベル量子ビーム誘起反応からバルク量子ビーム誘起反応への拡大が期待される。電子線パルスラジオリシス拡散反射法によるin vitro生体関連系へのパルスラジオリシス測定の発展や量子ビーム誘起反応機構解明による医療分野への貢献が期待される。不均一反応場量子ビーム誘起反応機構の解明による各種高分子材料の次世代加工技術の応用、耐放射性材料の開発も可能となる。不均一系環境汚染物質分解法によるグリーンイノベーションと不均一反応場が及ぼす量子ビーム誘起特異的反応の創出が期待される。

Report

(5 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • 2018 Research-status Report
  • Research Products

    (11 results)

All 2021 2020 2019 2018

All Journal Article (9 results) (of which Int'l Joint Research: 9 results,  Peer Reviewed: 9 results,  Open Access: 2 results) Presentation (2 results)

  • [Journal Article] Electronic and Structural Properties of 2,3‐Naphthalimide in Open‐Shell Configurations Investigated by Pulse Radiolytic and Theoretical Approaches2021

    • Author(s)
      Bo Zhuang Sachiko Tojo and Mamoru Fujitsuka
    • Journal Title

      ChemistrySelect

      Volume: 6 Issue: 14 Pages: 3331-3338

    • DOI

      10.1002/slct.202100417

    • Related Report
      2021 Annual Research Report 2020 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Examining features of radiation-induced damage to PADC observed using FT-IR analysis: Radiation tolerance of methine groups at three-way junctions2021

    • Author(s)
      T.Kusumoto, M. Kanasaki, I. Ishikawa, R. Barillon, Y. Honda, S. Tojo, S. Kodaira and T. Yamauchi
    • Journal Title

      Radiation Measurements

      Volume: 147 Pages: 106645-106645

    • DOI

      10.1016/j.radmeas.2021.106645

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Dynamics of Single‐Stranded RNA Looping Probed and Photoregulated by Sulfonated Pyrene2020

    • Author(s)
      J. Xu, S. Tojo, M. Fujitsuka and K. Kawai
    • Journal Title

      ChemistrySelect

      Volume: 5 Issue: 26 Pages: 8002-8008

    • DOI

      10.1002/slct.202002231

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Sulfonated Pyrene as a Photoregulator for Single-Stranded DNA Looping2020

    • Author(s)
      Jie Xu, Shunichi Miyamoto, Sachiko Tojo and Kiyohiko Kawai
    • Journal Title

      Chemistry - A European Journal

      Volume: 26 Issue: 22 Pages: 5075-5084

    • DOI

      10.1002/chem.202000184

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Evidence for a critical dose above which damage to carbonate ester bonds in PADC appear after gamma ray and ultra soft X-ray exposures2020

    • Author(s)
      Tamon Kusumoto, Shogo Okada, Hisaya Kurashige, Kazuo Kobayashi, Michel Fromm, Quentin Raffy, Nicolas Ludwig, Masato Kanasaki, Keiji Oda, Yoshihide Honda, Sachiko Tojo, Jean-Emmanuel Groetz, Ryo Ogawara, Satoshi Kodair and Tomoya Yamauchi
    • Journal Title

      Radiation Physics and Chemistry

      Volume: 170 Pages: 108628-108630

    • DOI

      10.1016/j.radphyschem.2019.108628

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Proton transfer accompanied with oxidation reaction of adenosine2019

    • Author(s)
      Jungkweon Choi, Sachiko Tojo, Doo-Sik Ahn, Mamoru Fujitsuka, Shunichi Miyamoto, Kazuo Kobayashi, Hyotcherl Ihee and Tetsuro Majima
    • Journal Title

      Chemistry - A European Journal

      Volume: 25 Issue: 32 Pages: 7711-7718

    • DOI

      10.1002/chem.201900732

    • Related Report
      2019 Research-status Report 2018 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Formation of the Charge‐Localized Dimer Radical Cation of 2‐Ethyl‐9, 10‐dimethoxyanthracene in Solution Phase2019

    • Author(s)
      Choi, Jungkweon; Ahn, Doo-Sik; Fujitsuka, Mamoru; Tojo, Sachiko; Ihee, Hyotcherl; Majima, Tetsuro
    • Journal Title

      Chemistry - A European Journal

      Volume: 25 Issue: 21 Pages: 5586-5594

    • DOI

      10.1002/chem.201900175

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Influence of Charge Distribution on Structural Changes of Aromatic Imide Derivatives upon One-Electron Reduction Revealed by Time-Resolved Resonance Raman Spectroscopy during Pulse Radiolysis2018

    • Author(s)
      Zhuang Bo、Fujitsuka Mamoru、Tojo Sachiko、Cho Dae Won、Choi Jungkweon、Majima Tetsuro
    • Journal Title

      The Journal of Physical Chemistry A

      Volume: 122 Issue: 44 Pages: 8738-8744

    • DOI

      10.1021/acs.jpca.8b08310

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Donor-Donor-Acceptor Triads Based on [3.3]Paracyclophane with a 1,4‐Dithiafulvene Donor and a Cyanomethylene Acceptor: Synthesis, Structure, and Electrochemical and Photophysical Properties2018

    • Author(s)
      Sako, Katsuya; Hasegawa, Tomoya; Onda, Hiroyuki; Shiotsuka, Michito; Watanabe, Motonori; Shinmyozu, Teruo; Tojo, Sachiko; Fujitsuka, Mamoru; Majima, Tetsuro; Hirao, Yasukazu
    • Journal Title

      Chemistry - A European Journal

      Volume: 24 Issue: 14 Pages: 11407-11416

    • DOI

      10.1021/acs.jpclett.8b02006

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] The Biological Effects of Space Radiation: Pulse Radiolysis Studies for the Oxidation of Adenosine2020

    • Author(s)
      Sachiko Tojo and Yoshihide Honda
    • Organizer
      The 23rd SANKEN International Symposium. The 18th SANKEN Nanotechnology International Symposium
    • Related Report
      2019 Research-status Report
  • [Presentation] Detection of Sulfide Dimer Radical Cations by the Time-resolved Resonance Raman Spectroscopy during Pulse Radiolysis2018

    • Author(s)
      S. Tojo, M. Fujitsuka and Y. Honda
    • Organizer
      日本MRS年次大会
    • Related Report
      2018 Research-status Report

URL: 

Published: 2018-04-23   Modified: 2023-01-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi