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Theoretical study of the correlation between chemical reaction and intramolecular energy transfer through vibronic motions

Research Project

Project/Area Number 19K05367
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 32010:Fundamental physical chemistry-related
Research InstitutionThe University of Tokyo

Principal Investigator

Yokogawa Daisuke  東京大学, 大学院総合文化研究科, 准教授 (90624239)

Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2021: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2020: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2019: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Keywords溶液内量子化学計算 / 基準振動解析 / 自由エネルギー曲面 / エネルギー曲面 / 振動モード / 解析的二次微分 / RISM-SCF-cSED法 / 固有反応座標 / エネルギー散逸過程 / QM-MM/MD計算 / 非調和カップリング
Outline of Research at the Start

本研究課題では、ヘキサトリエンからシクロヘキサジエンへの閉環反応を対象に、分子内の原子、もしくは特定の振動モードを加熱する際に加えたエネルギーが、どのように反応へと移動するのかを明らかにする。そのために、現象の再現、現象の解析、現象の理解を3本の柱として、量子化学計算と分子動力学法を組み合わせたQM-MM/MD法や時間周波数解析などを駆使して本研究を進めていく。

Outline of Final Research Achievements

Theoretical approach to discuss both of the chemical reaction rate and energy dissipation is strongly required. To design such an approach, we developed methods for (1) accurate potential field made by solvent molecules and (2) energy transfer along the structural fluctuation and solute-solvent interactions. In the case of (1), we derived analytical gradient of free energies in solution based on second-order Moller-Plesset perturbation theory. In the case of (2), we developed an analytical second derivatives of the free energy in solution. By employing developed methods, we studied chemical systems in solution, such as non-radiative decay process through intersystem crossing, tautomerization reaction of poly-iodide anions in solution, and so on.

Academic Significance and Societal Importance of the Research Achievements

本研究では溶液内での高精度エネルギー計算、揺らぎを含めた自由エネルギー曲面の計算を行うための理論開発、ならびにそこから求めることができる振動モードを利用したエネルギー移動を議論するための手法の開発を行った。これらの手法は溶液内でのエネルギー移動を議論する上で重要であるだけでなく、様々な溶液内化学現象を議論する上での基礎になるはずである。また、今回開発した手法はアイオワ州立大学で開発が進められているGAMESSプログラム上で実行しており、将来的には公開することも視野に入れている。

Report

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

    (8 results)

All 2021 2020 2019

All Journal Article (5 results) (of which Peer Reviewed: 5 results) Presentation (3 results)

  • [Journal Article] Analytical second derivatives of the free energy in solution by the reference interaction site model self-consistent field explicitly including constrained spatial electron density distribution2021

    • Author(s)
      Yokogawa Daisuke、Suda Kayo
    • Journal Title

      The Journal of Chemical Physics

      Volume: 155 Issue: 20 Pages: 204102-204102

    • DOI

      10.1063/5.0067248

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Investigating the Nonradiative Decay Pathway in the Excited State of Silepin Derivatives: A Study with Second-Order Multireference Perturbation Wavefunction Theory2021

    • Author(s)
      Inai Naoto、Yokogawa Daisuke、Yanai Takeshi
    • Journal Title

      The Journal of Physical Chemistry A

      Volume: 125 Issue: 2 Pages: 559-569

    • DOI

      10.1021/acs.jpca.0c08738

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Analytical energy gradient for the second-order M?ller?Plesset perturbation theory coupled with the reference interaction site model self-consistent field explicitly including spatial electron density distribution2021

    • Author(s)
      Negishi Naoki、Yokogawa Daisuke
    • Journal Title

      The Journal of Chemical Physics

      Volume: 154 Issue: 15 Pages: 154101-154101

    • DOI

      10.1063/5.0046730

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Electrostatic Potential Fitting Method Using Constrained Spatial Electron Density Expanded with Preorthogonal Natural Atomic Orbitals2020

    • Author(s)
      Yokogawa Daisuke、Suda Kayo
    • Journal Title

      The Journal of Physical Chemistry A

      Volume: 124 Issue: 46 Pages: 9665-9673

    • DOI

      10.1021/acs.jpca.0c07425

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Isotropic Site-Site Dispersion Potential Determined from Localized Frequency-Dependent Density Susceptibility2019

    • Author(s)
      Yokogawa Daisuke
    • Journal Title

      Bulletin of the Chemical Society of Japan

      Volume: 92 Issue: 10 Pages: 1694-1700

    • DOI

      10.1246/bcsj.20190142

    • NAID

      130007728633

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Presentation] RISM-cSED-MP2法, -CCSD(T)法による溶液内化学反応系の高精度電子状態計算2020

    • Author(s)
      根岸 直輝、横川 大輔
    • Organizer
      分子科学会オンライン討論会
    • Related Report
      2020 Research-status Report
  • [Presentation] 混合溶媒中でのp-ニトロアニリンの吸収における非理想性に関する理論的研究2020

    • Author(s)
      矢吹 志保、横川 大輔
    • Organizer
      溶液化学若手の会オンラインシンポジウム 2020
    • Related Report
      2020 Research-status Report
  • [Presentation] 溶媒和依存性が大きな化学反応に関する活性化自由エネルギーの高精度予測を目指した量子 化学計算手法の開発2020

    • Author(s)
      根岸 直輝、横川 大輔
    • Organizer
      溶液化学若手の会オンラインシンポジウム 2020
    • Related Report
      2020 Research-status Report

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Published: 2019-04-18   Modified: 2023-01-30  

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