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Development of fundamental theory of exciton and charge dynamics for efficient use of solar light

Research Project

Project/Area Number 18H01937
Research Category

Grant-in-Aid for Scientific Research (B)

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

Principal Investigator

Tamura Hiroyuki  東京大学, 先端科学技術研究センター, 特任准教授 (60390655)

Co-Investigator(Kenkyū-buntansha) 石北 央  東京大学, 先端科学技術研究センター, 教授 (00508111)
石崎 章仁  分子科学研究所, 理論・計算分子科学研究領域, 教授 (60636207)
Project Period (FY) 2018-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥17,550,000 (Direct Cost: ¥13,500,000、Indirect Cost: ¥4,050,000)
Fiscal Year 2020: ¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2019: ¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2018: ¥7,410,000 (Direct Cost: ¥5,700,000、Indirect Cost: ¥1,710,000)
Keywords電子移動 / 励起エネルギー移動 / シングレット・フィッション / アップコンバージョン / 光合成 / 有機系太陽電池 / 励起子 / フォトンアップコンバージョン / 第一原理計算 / 量子ダイナミックス計算 / 太陽電池 / シングレットフィッション / 有機太陽電池 / 電荷分離
Outline of Final Research Achievements

In this study, we analyze the mechanisms of singlet fission, which generates two triplet excitons from a singlet exciton, and TTA, which is a reverse reaction of singlet fission, in molecular condensates by means of first principles calculations and quantum dynamics calculations. The effects of molecular packing on the reaction mechanisms are clarified. Besides, we clarify the reaction mechanisms of photon up-conversion in molecules adsorbed on lanthanide cluster via spin-orbit coupling and electron exchanges. Further, we analyze charge separation mechanisms in photosynthetic reaction centers using the same approach. We clarify the mechanism that leads to unidirectional charge separation in the reaction centers of photosystem II and purple bacteria.

Academic Significance and Societal Importance of the Research Achievements

太陽光エネルギーの効率利用のための基礎的知見を得るため、近年注目されているシングレット・フィッションとフォトン・アップコンバージョンの機構、および光合成系の電子・エネルギー移動に関する理論研究を行った。シングレット・フィッションは短波長光の量子効率の飛躍的増大につながり、フォトン・アップコンバージョンは通常の太陽電池や光触媒で利用できない長波長光の有効利用につながる。また、光合成系の基礎的知見は人口光合成系の設計指針につながる。

Report

(4 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Annual Research Report
  • 2018 Annual Research Report
  • Research Products

    (14 results)

All 2021 2020 2019 2018

All Journal Article (13 results) (of which Int'l Joint Research: 5 results,  Peer Reviewed: 13 results,  Open Access: 7 results) Presentation (1 results) (of which Int'l Joint Research: 1 results,  Invited: 1 results)

  • [Journal Article] Nature of Asymmetric Electron Transfer in the Symmetric Pathways of Photosystem I2021

    • Author(s)
      Mitsuhashi Koji、Tamura Hiroyuki、Saito Keisuke、Ishikita Hiroshi
    • Journal Title

      The Journal of Physical Chemistry B

      Volume: 125 Issue: 11 Pages: 2879-2885

    • DOI

      10.1021/acs.jpcb.0c10885

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Triplet Exciton Transfers and Triplet?Triplet Annihilation in Anthracene Derivatives via Direct versus Superexchange Pathways Governed by Molecular Packing2020

    • Author(s)
      Tamura Hiroyuki
    • Journal Title

      The Journal of Physical Chemistry A

      Volume: 124 Issue: 39 Pages: 7943-7949

    • DOI

      10.1021/acs.jpca.0c06835

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Lanthanide-doped inorganic nanoparticles turn molecular triplet excitons bright2020

    • Author(s)
      Han Sanyang、Deng Renren、Gu Qifei、Ni Limeng、Huynh Uyen、Zhang Jiangbin、Yi Zhigao、Zhao Baodan、Tamura Hiroyuki、Pershin Anton、Xu Hui、Huang Zhiyuan、Ahmad Shahab、Abdi-Jalebi Mojtaba、Sadhanala Aditya、Tang Ming Lee、Bakulin Artem、Beljonne David、Liu Xiaogang、Rao Akshay
    • Journal Title

      Nature

      Volume: 587 Issue: 7835 Pages: 594-599

    • DOI

      10.1038/s41586-020-2932-2

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Acquirement of water-splitting ability and alteration of the charge-separation mechanism in photosynthetic reaction centers2020

    • Author(s)
      Tamura Hiroyuki、Saito Keisuke、Ishikita Hiroshi
    • Journal Title

      Proceedings of the National Academy of Sciences

      Volume: 117 Issue: 28 Pages: 16373-16382

    • DOI

      10.1073/pnas.2000895117

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Long-Range Exciton Diffusion via Singlet Revival Mechanism2019

    • Author(s)
      Tamura Hiroyuki、Azumaya Koki、Ishikita Hiroshi
    • Journal Title

      The Journal of Physical Chemistry Letters

      Volume: 10 Issue: 24 Pages: 7623-7628

    • DOI

      10.1021/acs.jpclett.9b03029

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Singlet exciton fission via an intermolecular charge transfer state in coevaporated pentacene-perfluoropentacene thin films2019

    • Author(s)
      Kim Vincent O.、Broch Katharina、Belova Valentina、Chen Y. S.、Gerlach Alexander、Schreiber Frank、Tamura Hiroyuki、Della Valle Raffaele Guido、D’Avino Gabriele、Salzmann Ingo、Beljonne David、Rao Akshay、Friend Richard
    • Journal Title

      The Journal of Chemical Physics

      Volume: 151 Issue: 16 Pages: 164706-164706

    • DOI

      10.1063/1.5130400

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Mechanism of protonation of the over-reduced Mn4CaO5 cluster in photosystem II2019

    • Author(s)
      Saito Keisuke、Ishikita Hiroshi
    • Journal Title

      Biochimica et Biophysica Acta (BBA) - Bioenergetics

      Volume: 1860 Issue: 10 Pages: 148059-148059

    • DOI

      10.1016/j.bbabio.2019.148059

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Ultrafast carbon monoxide photolysis and heme spin-crossover in myoglobin via nonadiabatic quantum dynamics2018

    • Author(s)
      Falahati Konstantin、Tamura Hiroyuki、Burghardt Irene、Huix-Rotllant Miquel
    • Journal Title

      Nature Communications

      Volume: 9 Issue: 1 Pages: 4502-4502

    • DOI

      10.1038/s41467-018-06615-1

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Robust singlet fission in pentacene thin films with tuned charge transfer interactions2018

    • Author(s)
      K. Broch, J. Dieterle, F. Branchi, N.J. Hestand, Y. Olivier, H. Tamura, C. Cruz, V.M. Nichols, A. Hinderhofer, D. Beljonne, F.C. Spano, G. Cerullo, C.J. Bardeen, and F. Schreiber
    • Journal Title

      Nature Communications

      Volume: 9 Issue: 1 Pages: 954-954

    • DOI

      10.1038/s41467-018-03300-1

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Mechanism of Radical Formation in the H-Bond Network of D1-Asn298 in Photosystem II2018

    • Author(s)
      Kawashima Keisuke、Saito Keisuke、Ishikita Hiroshi
    • Journal Title

      Biochemistry

      Volume: 57 Issue: 33 Pages: 4997-5004

    • DOI

      10.1021/acs.biochem.8b00574

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Energetic insights into two electron transfer pathways in light-driven energy-converting enzymes2018

    • Author(s)
      K. Kawashima, H. Ishikita
    • Journal Title

      Chem. Sci.

      Volume: 9 Issue: 17 Pages: 4083-4092

    • DOI

      10.1039/c8sc00424b

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Non-Markovian Quantum-Classical Ratchet for Ultrafast Long-Range Electron-Hole Separation in Condensed Phases2018

    • Author(s)
      Kato Akihito、Ishizaki Akihito
    • Journal Title

      Physical Review Letters

      Volume: 121 Issue: 2 Pages: 026001-026001

    • DOI

      10.1103/physrevlett.121.026001

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Intramolecular Vibrations Complement the Robustness of Primary Charge Separation in a Dimer Model of the Photosystem II Reaction Center2018

    • Author(s)
      Fujihashi Yuta、Higashi Masahiro、Ishizaki Akihito
    • Journal Title

      The Journal of Physical Chemistry Letters

      Volume: 9 Issue: 17 Pages: 4921-4929

    • DOI

      10.1021/acs.jpclett.8b02119

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Presentation] Combined Electronic Structure and Quantum Dynamical Analysis for Charge Separation and Singlet Fission2018

    • Author(s)
      田村宏之
    • Organizer
      Nonadiabatica 2018: Theory of nonadiabatic processes, Jerusalem, Israel
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited

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Published: 2018-04-23   Modified: 2022-01-27  

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