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Semi-classical path integral method for the inverse-isotopic effect on the intra-molecular tunnelings

Research Project

Project/Area Number 16K05663
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Physical chemistry
Research InstitutionInstitute of Physical and Chemical Research

Principal Investigator

Kawatsu Tsutomu  国立研究開発法人理化学研究所, 情報システム本部, 特別研究員 (00447913)

Research Collaborator Tachikawa Masanori  
Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2018: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2017: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2016: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywords原子核量子効果 / 経路積分法 / 経路積分分子動力学法 / 第一原理分子動力学法 / フラーレン / 水素内包フラーレン / 核磁気遮蔽 / トンネル効果 / 半古典近似 / 量子化学 / 分子動力学 / 原子核トンネル効果 / 非調和ポテンシャル / 半古典的経路積分法
Outline of Final Research Achievements

Although it did not lead to the development of the final target program, we improved the program of the ab initio path integral molecular dynamics method and performed empirical calculations. In the all-atom calculation of hydrogen encapsulated in C60 fullerene, which was also performed for verification of large-scale parallel calculation, we found that molecular vibration by the nuclear quantum effect affects the internal magnetic field of C60 fullerene. In addition, we studied on the hydrogen-bonded complex molecular systems, and we are preparing to present the results.

Academic Significance and Societal Importance of the Research Achievements

水素内包C60フラーレンにおいて、ケージであるC60フラーレンの量子振動が、その電子状態エネルギーを通して内部磁場に影響を与えることをこの研究で初めて示した。C60フラーレンの化合物は有機薄膜太陽電池等の有機電子デバイスの材料として着目されており、そのようなデバイスにおいて、電子状態エネルギーは重要であり、本研究は、将来的にそのようなデバイスデザインに対しての、一つの指標となりうるものだと考えている。

Report

(4 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • 2016 Research-status Report
  • Research Products

    (5 results)

All 2018 2017 2016

All Journal Article (1 results) (of which Peer Reviewed: 1 results) Presentation (4 results) (of which Int'l Joint Research: 1 results,  Invited: 1 results)

  • [Journal Article] Quantum fluctuations of a fullerene cage modulate its internal magnetic environment2018

    • Author(s)
      Kawatsu Tsutomu、Tachikawa Masanori
    • Journal Title

      Physical Chemistry Chemical Physics

      Volume: 20 Issue: 3 Pages: 1673-1684

    • DOI

      10.1039/c7cp06401b

    • Related Report
      2017 Research-status Report
    • Peer Reviewed
  • [Presentation] C60 フラーレンの量子揺らぎによる内部磁場環境への寄与2017

    • Author(s)
      河津 励、立川仁典
    • Organizer
      第20回理論化学討論会
    • Place of Presentation
      京都大学(京都府・京都市)
    • Year and Date
      2017-05-16
    • Related Report
      2016 Research-status Report
  • [Presentation] C60フラーレンの量子揺らぎによる内部磁場環境への寄与2017

    • Author(s)
      河津励、立川仁典
    • Organizer
      第20回理論化学討論会
    • Related Report
      2017 Research-status Report
  • [Presentation] Quantum fluctuations of fullerene’s internal magnetic environment2017

    • Author(s)
      T. Kawatsu, M. Tachikawa
    • Organizer
      2017 Joint Japan-Thai-Vietnam Workshop on Theoretical and Computational Chemistry
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] H2/HD@C60フラーレンにおけるNMR核磁気遮蔽定数の計算2016

    • Author(s)
      河津 励、立川仁典
    • Organizer
      第10回分子科学討論会
    • Place of Presentation
      神戸ファッションマート(兵庫県・神戸市)
    • Year and Date
      2016-09-13
    • Related Report
      2016 Research-status Report

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Published: 2016-04-21   Modified: 2020-03-30  

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