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Construction of Conjugated Macrocycles Based on Knot Theory and the Circularly Polarized Luminescence Behaviors

Research Project

Project/Area Number 21K18967
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 33:Organic chemistry and related fields
Research InstitutionKwansei Gakuin University

Principal Investigator

Morisaki Yasuhiro  関西学院大学, 生命環境学部, 教授 (60332730)

Project Period (FY) 2021-07-09 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
Fiscal Year 2023: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2022: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Fiscal Year 2021: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Keywords面性不斉 / 円偏光発光 / 大環状分子 / 三葉結び目 / シクロファン / 環状構造 / 光学活性オリゴマー / 結び目理論 / 環状オリゴマー / 巨大環状構造
Outline of Research at the Start

本研究は[2.2]パラシクロファンのベンゼン環積層構造と面性不斉に着目し、光学活性四置換[2.2]パラシクロファンをπ共役系環状骨格に導入した従前に無いキラル共役系環状分子の合成と世界最大の異方性を有する円偏光発光発現を目的とする研究である。合成予定の三葉結び目分子はベンゼン環数21個かつC≡C数21個、五葉結び目は共に30個からなる巨大拡張π共役系分子である。目的分子は理論を含め上述の条件を兼ね備えた理想的な分子と言え、それらの合成に挑戦することはもちろん円偏光発光異方性因子の世界最高値を目指す。

Outline of Final Research Achievements

The results we achieved in this work are as follows. (1) We have focused on the construction of a pi-conjugated chiral trefoil knot using optically active [2.2]paracyclophane and reached the remaining two steps. (2) We have successfully prepared conjugated oligomers in which 2~4 pi-electron systems are stacked. (3) In addition, pi-conjugated chiral macrocycles were also synthesized. They emitted circularly polarized luminescence (CPL) with high anisotropy factors and CPL brightness values. (4) We synthesized one-handed ortho-oligophenylene-stacked molecules emitting CPL with high anisotropy factors. It is the first report that ortho-oligophenylenes emit CPL. (5) We synthesized triphenylene-stacked molecule and revealed their structure and physical properties in detail.

Academic Significance and Societal Importance of the Research Achievements

キラルな三葉結び目を共役系で構築した環状分子の合成例は皆無であり、合成に挑戦し円偏光発光を評価する円偏光発光輝度値(B_CPL値)で世界最高値を目指す本研究は学術的意義がある。本研究では結び目をもたない環状分子の合成にも成功した。特に#型環状四量体は10^-3の桁の良好な異方性因子(g値)を示し、B_CPL値も約200 M^-1cm^-1 と良好な値を示した。また、環状A型分子はその値を凌駕する優れた円偏光発光体であった(10^-2の桁のg値と300 M^-1cm^-1超のB_CPL値)。これらを通して優れた円偏光発光特性を示す分子の設計指針を提案できたことは学術的社会的意義が大きい。

Report

(4 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • Research Products

    (15 results)

All 2024 2023 2022 2021 Other

All Journal Article (5 results) (of which Peer Reviewed: 5 results) Presentation (9 results) (of which Int'l Joint Research: 4 results,  Invited: 5 results) Remarks (1 results)

  • [Journal Article] Synthesis and characterization of one-handed helical oligo(o-phenylene)s: control of axial chirality by planar chiral [2.2]paracyclophane2024

    • Author(s)
      Yanagawa Asuka、Inoue Ryo、Morisaki Yasuhiro
    • Journal Title

      Chemical Communications

      Volume: 60 Issue: 11 Pages: 1468-1471

    • DOI

      10.1039/d3cc05000a

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Optically Active A‐Shaped Cyclic Molecules Based on Planar Chiral [2.2]Paracyclophanes Emitting Bright Circularly Polarized Luminescence with High Anisotropy Factors2023

    • Author(s)
      Kensei Matsumura, Ryo Inoue,Yasuhiro Morisaki
    • Journal Title

      Advanced Functional Materials

      Volume: - Issue: 47

    • DOI

      10.1002/adfm.202310566

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Synthesis and characterization of anti -[2.2](1,4)triphenylenophane2023

    • Author(s)
      Asuka Yanagawa, Ryo Inoue, Yasuhiro Morisaki
    • Journal Title

      Chemistry Letters

      Volume: 53 Issue: 1

    • DOI

      10.1093/chemle/upad018

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 1.Synthesis of Two Novel Optically Active #-Shaped Cyclic Tetramers Based on Planar Chiral [2.2]Paracyclophanes2023

    • Author(s)
      Morisaki, A.; Inoue; R.; Morisaki, Y.
    • Journal Title

      Chem. Eur. J.

      Volume: 29 Issue: 18 Pages: 1-7

    • DOI

      10.1002/chem.202203533

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Optically Active Cyclic Oligomers Based on Planar Chiral [2.2]Paracyclophane2022

    • Author(s)
      Kentaro Tanaka, Ryo Inoue, Yasuhiro Morisaki
    • Journal Title

      Chem. Asian J.

      Volume: 17 Issue: 2

    • DOI

      10.1002/asia.202101267

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Presentation] Synthesis of Chiral Cyclic Oligomers and Cyclic Molecules Based on Planar Chiral [2.2]Paracyclophanes2024

    • Author(s)
      Yasuhiro Morisaki
    • Organizer
      The 2024 Pure and Applied Chemistry International Conference
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Synthesis of Organic CPL-Emitting Materials Based on Planar Chiral Scaffolds2023

    • Author(s)
      Yasuhiro Morisaki
    • Organizer
      2nd World Symposium on Materials Sciences and Engineering
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 面性不斉を基盤とする光学活性環状分子の合成と円偏光発光特性評価2023

    • Author(s)
      森崎泰弘・三木仲七海・土屋幹貴・井上僚
    • Organizer
      第72回高分子討論会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 新規π電子系積層型元素ブロックの合成2023

    • Author(s)
      森崎泰弘・梁川明日香・土屋幹貴・井上僚
    • Organizer
      第72回高分子討論会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Synthesis and Chiroptical Properties of Cyclic Oligomers Based on Planar Chiral [2.2]Paracyclophanes2023

    • Author(s)
      Yasuhiro Morisaki
    • Organizer
      International Congress on Pure & Applied Chemistry Bali 2023
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 面性不斉[2.2]パラシクロファンからなる光学活性分子の合成と円偏光発光2023

    • Author(s)
      森崎泰弘
    • Organizer
      Molecular Chirality 2023
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] Circularly Polarized Luminescence Emitting Organic Materials Based on Planar Chiral Molecules2023

    • Author(s)
      Yasuhiro Morisaki
    • Organizer
      The 4th Materials Research Society of Thailand International Conference
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] 面性不斉元素ブロックを用いるπ電子系積層環状オリゴマーの合成と円偏光発光2022

    • Author(s)
      森崎泰弘・田中健太郎・森崎葵・井上僚
    • Organizer
      第71回高分子討論会
    • Related Report
      2022 Research-status Report
  • [Presentation] 面性不斉元素ブロックの合成と円偏光発光2021

    • Author(s)
      森崎泰弘
    • Organizer
      第70回高分子討論会
    • Related Report
      2021 Research-status Report
  • [Remarks] 円偏光発光材料の開発:面性不斉シクロファンが拓く材料化学

    • URL

      http://www.kg-applchem.jp/morisaki/research/planar_chiral/

    • Related Report
      2022 Research-status Report

URL: 

Published: 2021-07-13   Modified: 2025-01-30  

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