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The development of liquid crystalline metal complex host for labile and chiral metal complexes

Research Project

Project/Area Number 19K05508
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 34010:Inorganic/coordination chemistry-related
Research InstitutionNihon University (2021)
Kitasato University (2019-2020)

Principal Investigator

YOSHIDA Jun  日本大学, 文理学部, 准教授 (60585800)

Co-Investigator(Kenkyū-buntansha) 佐藤 久子  愛媛大学, 理工学研究科(理学系), 教授 (20500359)
渡辺 豪  北里大学, 理学部, 准教授 (80547076)
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: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2020: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2019: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Keywordsキラリティー / 液晶 / ホストゲスト / 赤外円二色性 / VCD / 金属錯体液晶 / ホスト・ゲスト / ルテニウム / キラル / 金属錯体 / XRD / メタロメソゲン / 分子動力学計算 / らせん / 分子動力学シミュレーション / GI-XRD / 置換活性錯体
Outline of Research at the Start

キラルな八面体型金属錯体(デルタ・ラムダ異性)は、これまで合成や光学分割に関する多数の報告があり、近年ではキラル光学材料としても注目を集めている。一方、キラル光学材料や不斉触媒として利用されるキラル錯体の多くは、中心に置換不活性な金属イオンをもつ。置換「活性」な金属イオンをもつ場合、そのエナンチオ体は徐々にラセミ化し光学活性を失う。本研究では、置換「活性」錯体のエナンチオ体を安定に保持し、機能を発現する場(ホスト)として、液晶性を示す金属錯体を検討・活用する。さらに、液晶ホスト内部に包接された置換「活性」錯体のキラル物性の開拓に挑戦する。

Outline of Final Research Achievements

We examined to use liquid crystals as hosts with structural flexibility. We verified that enantiopure ruthenium complex, Ru-C8, forms a helical structure with a ca. 5nm pitch based on XRD and spectroscopic studies and molecular dynamics simulation. Further, enantiomers of Ru-C8 were found to form a different liquid crystal phase, when they incorporated Ir-C8 with opposite chirality or racemic [Ru(acac)3]. The superlattice formation in racemic Ru-C8 and Ir-C8 and cubic phase formation in Ru-C10 were further observed.

Academic Significance and Societal Importance of the Research Achievements

次世代の表示素子やセンシング材料として、キラル光学特性を示す分子性材料が注目を集めている。用いる金属イオンや配位子によって物性制御が可能なキラル錯体もまた、キラル光学材料として期待される1つである。本研究で開発した液晶性ホストは、ゲストに応じてその構造を柔軟に変える。VCD測定の結果からも、ゲストの包接によってホスト単体とは異なる光学特性を持ちうることが示唆された。今後、さらに様々な金属錯体の包接を検討することで、より多彩なキラル光学特性の開拓やキラル反応場としての展開も可能になると期待される。

Report

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

    (19 results)

All 2022 2021 2020 2019 Other

All Int'l Joint Research (1 results) Journal Article (12 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 12 results,  Open Access: 1 results) Presentation (6 results) (of which Int'l Joint Research: 1 results,  Invited: 1 results)

  • [Int'l Joint Research] Simon Fraser University(カナダ)

    • Related Report
      2019 Research-status Report
  • [Journal Article] Two-dimensional imaging of a model pharmaceutical dosage tablet using a scanning vibrational circular dichroism system2022

    • Author(s)
      H. Sato, S. Aisawa, H. Ida, M. Shimizu, K. Watanabe, J. Koshoubu, J. Yoshida, I. Kawamura
    • Journal Title

      Chemistry Letters

      Volume: 51 Issue: 2 Pages: 205-207

    • DOI

      10.1246/cl.210635

    • NAID

      130008161579

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Chiroptical switching behavior of heteroleptic ruthenium complexes bearing acetylacetonato and tropolonato ligand2021

    • Author(s)
      G. Watanabe*, H. Watanabe, K. Suzuki, H. Yuge, S. Yoshida, T. Mandai, S. Yoneda, H. Sato, M. Hara*, J. Yoshida*
    • Journal Title

      Dalton Transactions

      Volume: 50 Issue: 41 Pages: 14611-14617

    • DOI

      10.1039/d1dt02592a

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Five-Coordinate Iridium(III) Complex with DeltaLambda Chirality2021

    • Author(s)
      K. Takimoto, Y. Watanabe, J. Yoshida, H. Sato
    • Journal Title

      Dalton Transactions

      Volume: 50 Issue: 38 Pages: 13256-13263

    • DOI

      10.1039/d1dt01960k

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Mapping of Supramoleclar Chirality in Insect Wings by Microscopic Vibrational Circular Dichroism Spectroscopy: Heterogeneity in Protein Distribution2021

    • Author(s)
      H. Sato*, A. Yamagishi, M. Shimizu, K. Watanabe, J. Koshoubu, J. Yoshida, I. Kawamura
    • Journal Title

      Journal of Physical Chemistry Letters

      Volume: 12 Issue: 32 Pages: 7733-7737

    • DOI

      10.1021/acs.jpclett.1c01949

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Stereoselective Enhancement of VCD Signals for Intercalation Compounds of Sodium Montmorillonite and Chiral Metal Complexes,2021

    • Author(s)
      H. Sato, K. Takimoto, J. Yoshida, A. Yamagishi
    • Journal Title

      Bulletin of the Chemical Society of Japana

      Volume: 94 Issue: 6 Pages: 1731-1736

    • DOI

      10.1246/bcsj.20210101

    • NAID

      130008066549

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Vibrational Circular Dichroism towards Asymmetric Catalysis: Chiral Induction in Substrates Coordinated with Copper(II) Ions2020

    • Author(s)
      H. Sato, K. Takimoto, J. Yoshida, A. Yamagishi
    • Journal Title

      Physical Chemistry Chemical Physics

      Volume: 22 Issue: 5 Pages: 24393-24398

    • DOI

      10.1021/acs.analchem.0c02990

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Visualizing the helical stacking of octahedral metallomesogens with a chiral coreVisualizing the helical stacking of octahedral metallomesogens with a chiral core2020

    • Author(s)
      G. Watanabe*, H. Watanabe, K. Suzuki, H. Yuge, S. Yoshida, T. Mandai, S. Yoneda, H. Sato, M. Hara*, J. Yoshida*
    • Journal Title

      Chemical Communications

      Volume: 56 Issue: 81 Pages: 12134-12137

    • DOI

      10.1039/d0cc05930g

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Stabilization of oxidized ruthenium complexes by adsorption on clay minerals2020

    • Author(s)
      H. Yuge plexes by adsorption on clay minerals,
    • Journal Title

      Applied Clay Science

      Volume: 199 Pages: 105869-105869

    • DOI

      10.1016/j.clay.2020.105869

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Hexagonal ordering of racemic Ni(II) complexes in the interlayer space of a clay mineral2020

    • Author(s)
      J. Yoshida*, K. Tateyama, H. Yuge, M. Hara
    • Journal Title

      Chemical Communications

      Volume: 56 Issue: 73 Pages: 10670-10673

    • DOI

      10.1039/d0cc04977h

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Tris(tropolonato) ruthenium as a hub for connecting pi-conjugated systems2020

    • Author(s)
      Jun Yoshida,* Kazunori Tateyama, Hidetaka Yuge
    • Journal Title

      Dalton Trans.

      Volume: 49 Issue: 7 Pages: 2102-2111

    • DOI

      10.1039/c9dt04860j

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Competing forces in the self-assembly of amide-functionalized discotic mesogens2019

    • Author(s)
      Jun Yoshida,* Kevin J. A. Bozek, John R. Thompson, Vance E. Williams*
    • Journal Title

      Soft Matter

      Volume: 15 Issue: 48 Pages: 10035-10044

    • DOI

      10.1039/c9sm01435g

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Chiral tectonics toward square planar tetranuclear Pd(II) complexes: propagation of axial chirality through a long molecular axis2019

    • Author(s)
      Y. Goto, Y. Watanabe, A. Noboriguchi, J. Yoshida, S. Mori, H. Sato*
    • Journal Title

      Dalton Trans

      Volume: 48 Issue: 27 Pages: 10138-10144

    • DOI

      10.1039/c9dt01913h

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Presentation] 粘土鉱物表面を舞台とするキラル錯体の2次元自己集合2021

    • Author(s)
      吉田純
    • Organizer
      日本セラミックス協会 第34回秋季シンポジウム
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] 八面体型金属錯体をメソゲンとするキラルカラムナー液晶の開発と内部構造解析2019

    • Author(s)
      吉田 純、原光生、渡辺 豪
    • Organizer
      錯体化学討論会
    • Related Report
      2019 Research-status Report
  • [Presentation] 分子中心に位置するキラリティーがカラム状積層構造に及ぼす影響: エナンチオ体とラセミ体の比較2019

    • Author(s)
      吉田 純、原光生、渡辺 豪
    • Organizer
      液晶学会討論会
    • Related Report
      2019 Research-status Report
  • [Presentation] 酸化体の安定化に向けた、粘土表面への酸化還元活性な金属錯体の吸着2019

    • Author(s)
      立山和憲、吉田純、弓削秀隆
    • Organizer
      粘土学会討論会
    • Related Report
      2019 Research-status Report
  • [Presentation] 八面体型金属錯体をメソゲンとするカラムナー液晶開発と積層構造の解析2019

    • Author(s)
      吉田 純、原光生、渡辺 豪
    • Organizer
      液晶化学シンポジウム
    • Related Report
      2019 Research-status Report
  • [Presentation] Investigation of the molecular stacking structures in chiral columnar phases formed by chiral octahedral metallomesogen,2019

    • Author(s)
      Jun Yoshida, Mitsuo Hara, and Go Watanabe
    • Organizer
      10th International Conference on Materials for Advanced Technologies (ICMAT)
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research

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

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