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Heterometallic complex molecular magnets: Correlation between lanthanide-platinum interaction and magnetism

Research Project

Project/Area Number 20K15293
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 34010:Inorganic/coordination chemistry-related
Research InstitutionThe University of Electro-Communications (2021-2022)
Tohoku University (2020)

Principal Investigator

Yoshida Takefumi  電気通信大学, 燃料電池・水素イノベーション研究センター, 特任准教授 (40866472)

Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2021: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2020: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Keywords錯体化学 / 分子磁石 / 相互作用 / 白金 / ガドリニウム / 分子磁性 / ランタノイド / ヘテロ金属錯体 / RIXS
Outline of Research at the Start

高度情報社会を迎え、高密度な記憶媒体として分子にスピン情報を書き込むことができるf電子系分子磁石が注目を集めている。申請者はf電子を制御する新しいコンセプトであるGd-Ptイオン間のドナーアクセプター相互作用に注目した。本研究ではドナー金属イオンであるPtイオンの配位子を修飾することでGd-Ptイオン間の相互作用の大きさを系統的に変化させ、その分子磁性への影響を調査する。相互作用の大きさはDFT計算及びX線吸収分光により検討する。

Outline of Final Research Achievements

We investigated the effects of donor-acceptor interactions between Ln-Pt ions in Ln-Pt heterometallic complexes on the physical properties. It will be developed molecular magnets (Ln: lanthanide, Pt: platinum). We revealed that the Ln-Pt interaction induces enhanced magnetism. The RIXS measurement suggested that the evaluation of interaction by the conventional method may underestimate the metal-metal interaction. From these results, it is necessary to investigate whether the conventional evaluation method underestimates the absolute value of any metal-to-metal distance or whether there is a threshold for a certain distance or more. In the future, systematic research will be necessary to fill the gap between experimental and theoretical systems.

Academic Significance and Societal Importance of the Research Achievements

本研究では、Ln-Pt相互作用により、磁性などの物性が発現することを明らかにしたが、そこからさらに従来の相互作用の評価方法(金属間距離やDFT計算)では、金属間相互作用が過小評価されている可能性が示唆された。これは従来考慮されていなかった相互作用の分子設計への組み込みを可能にする道を開くとともに、科学者が正しく相互作用を評価する方法を新たに確立する必要を提起するものである。今後、系統的な調査が進むことにより、高度情報社会を支える分子磁石記憶素子の開発などが進むと考えられる。

Report

(4 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (12 results)

All 2023 2022 2021 2020

All Journal Article (6 results) (of which Int'l Joint Research: 5 results,  Peer Reviewed: 6 results,  Open Access: 2 results) Presentation (6 results) (of which Int'l Joint Research: 3 results,  Invited: 1 results)

  • [Journal Article] Data Mining from XANES Spectra of Nickel Complexes for Structure Estimation2023

    • Author(s)
      Fuku Kentaro、Yoshida Takefumi、Sato Tetsu、Iguchi Hiroaki、Takaishi Shinya、Sakamoto Ryota、Abe Hitoshi
    • Journal Title

      Chemistry Letters

      Volume: 52 Issue: 4 Pages: 289-291

    • DOI

      10.1246/cl.230028

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Hydrogen Bonding Propagated Phase Separation in Quasi-Epitaxial Single Crystals: A Pd-Br Molecular Insulator2022

    • Author(s)
      Yoshida Takefumi、Takaishi Shinya、Guerin Laurent、Kojima Tatsuhiro、Ohtsu Hiroyoshi、Kawano Masaki、Miyamoto Tatsuya、Okamoto Hiroshi、Kato Kenichi、Takata Masaki、Hosomi Yuka、Yoshida Shoji、Shigekawa Hidemi、Tanaka Hisaaki、Kuroda Shin-ichi、Iguchi Hiroaki、Breedlove Brian K.、Li Zhao-Yang、Yamashita Masahiro
    • Journal Title

      Inorganic Chemistry

      Volume: 61 Issue: 35 Pages: 14067-14074

    • DOI

      10.1021/acs.inorgchem.2c02078

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Porous Mn2+ Magnet with a Pt-Cl Framework: Correlation between Water Vapor Adsorption/Desorption and Slow Magnetic Relaxation2022

    • Author(s)
      Nakajima Hirotaka、Uchida Kaiji、Yoshida Takefumi、Horii Yoji、Sato Tetsu、Luming Zhang、Yamashita Satoshi、Nakazawa Yasuhiro、Agulto Verdad C.、Nakajima Makoto、Breedlove Brian K.、Yamashita Masahiro、Iguchi Hiroaki、Takaishi Shinya
    • Journal Title

      ChemPhysChem

      Volume: 24 Issue: 4

    • DOI

      10.1002/cphc.202200618

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Insight into the Gd-Pt Bond: Slow Magnetic Relaxation of a Heterometallic Gd?Pt Complex2022

    • Author(s)
      Yoshida Takefumi、Shabana Ahmed、Zhang Haitao、Izuogu David Chukwuma、Sato Tetsu、Fuku Kentaro、Abe Hitoshi、Horii Yoji、Cosquer Goulven、Hoshino Norihisa、Akutagawa Tomoyuki、Thom Alex J. W.、Takaishi Shinya、Yamashita Masahiro
    • Journal Title

      Bulletin of the Chemical Society of Japan

      Volume: 95 Issue: 3 Pages: 513-521

    • DOI

      10.1246/bcsj.20210429

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] A Novel π-d Conjugated Cobalt Tetraaza[14]annulene based Atomically Dispersed Electrocatalyst for Efficient CO Reduction2022

    • Author(s)
      Liang Zhifu、Zhang Ting、Cao Pengfei、Yoshida Takefumi、Tang Weiqiang、Wang Xiang、Zuo Yong、Tang Pengyi、Heggen Marc、Dunin-Borkowski Rafal E.、Ramon Morante Joan、Cabot Andreu、Yamashita Masahiro、Arbiol Jordi
    • Journal Title

      Chemical Engineering Journal

      Volume: 442 Pages: 136129-136129

    • DOI

      10.1016/j.cej.2022.136129

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Hidden Heterometallic Interaction Emerging from Resonant Inelastic X-ray Scattering in Luminescent Tb-Pt Molecules2022

    • Author(s)
      Takefumi Yoshida, Ahmed Shabana, David Chukwuma Izuogu, Kentaro Fuku, Tetsu Sato, Haitao Zhang, Yukina Yamamoto, Jun Kamata, Hitomi Ohmagari, Miki Hasegawa, Goulven Cosquer, Shinya Takaishi, Takuma Kaneko, Tomoya Uruga, Yasuhiro Iwasawa, and Masahiro Yamashita
    • Journal Title

      Journal of Physical Chemistry C

      Volume: in press Issue: 18 Pages: 7973-7979

    • DOI

      10.1021/acs.jpcc.2c01396

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] Heterometallic interaction emerges from resonant inelastic X-ray scattering in lmagnetic Gd-Pt molecules.2022

    • Author(s)
      Takefumi Yoshida, Yasuhiro Iwasawa, Masahiro Yamashita
    • Organizer
      The 8th Asian Conference on Coordination Chemistry
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Hidden heterometallic interaction emerges from resonant inelastic X-ray scattering in luminescent Ln-Pt Molecule2022

    • Author(s)
      Takefumi Yoshida, Yasuhiro Iwasawa, Masahiro Yamashita
    • Organizer
      The 73rd Yamada Conference
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Heterometallic interaction emerges from resonant inelastic X-ray scattering in luminescent Tb-Pt molecules.2022

    • Author(s)
      Takefumi Yoshida, Yasuhiro Iwasawa, Masahiro Yamashita
    • Organizer
      日本化学会春年会
    • Related Report
      2021 Research-status Report
  • [Presentation] ヘテロGd-Pt金属錯体における金属間相互作用と磁気挙動の解明2021

    • Author(s)
      吉田健文、山下正廣
    • Organizer
      日本結晶学会
    • Related Report
      2021 Research-status Report
  • [Presentation] Ln-Pt electron polarization effects on the slow magnetic relaxation of heterometallic Ln–Pt complexes2021

    • Author(s)
      Takefumi Yoshida, Masahiro Yamashita
    • Organizer
      The 1st Asian Conference on Molecular Magnetism
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] Pt d-orbital Associate with the Nature of Gd f-orbital: Slow Magnetic Relaxation of Heterometallic Gd-Pt Complex2020

    • Author(s)
      Takefumi YOSHIDA, Masahiro YAMASHITA, Shinya TAKAISHI
    • Organizer
      錯体化学討論会
    • Related Report
      2020 Research-status Report

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Published: 2020-04-28   Modified: 2024-01-30  

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