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Construction of photo-triggered structural phase transition of organic molecular crystal and its extension to shape memory effect.

Research Project

Project/Area Number 22K14668
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 33010:Structural organic chemistry and physical organic chemistry-related
Research InstitutionRikkyo University

Principal Investigator

Nishimura Ryo  立教大学, 理学部, 助教 (00908634)

Project Period (FY) 2022-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2023: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Fiscal Year 2022: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Keywordsフォトクロミズム / ジアリールエテン / 有機結晶 / 光セルフヒーリング / 機械刺激 / 光セルフヒーリング効果 / 構造相転移 / 形状記憶効果 / 逆フォトクロミズム / マルテンサイト変態
Outline of Research at the Start

本研究の目的は、これまで、熱によってのみコントロールされてきたマルテンサイト変態
を、光照射のみで室温でコントロール可能な光応答性分子結晶を創出し、形状記憶機能へと
展開する事である。また本研究では特に、置換基の立体的機能化に着目し、積極的に構造相転移を誘起しうる置換基 (長鎖アルキル基、分子間相互を示す置換基等)を導入しマルテンサイト変態と光応答性分子の分子構造との関係性を明らかにすると共に、マルテンサイト相に対して、力学的刺激や蒸気暴露による構造相転移を組み合わせた、多刺激応答性形状記憶効果に挑戦する。

Outline of Final Research Achievements

In this research project, we focused on the creation of photoreactive molecular crystal showing shape memory effect and super elasticity.
We carried out the designing of molecules, synthesis, and crystallization to construct the functional crystal showing such functions, but we could not find such functional crystals. However, we found that the crystal showing elastically and plastically bending, in addition, its flexibility is switched by UV and visible light irradiation between flexible and brittle. These results provide new insights into molecular shape and crystal flexibility and are an important foothold toward building new functions for photofunctional organic crystal materials.

Academic Significance and Societal Importance of the Research Achievements

本課題の研究成果では、分子の形と結晶中での分子の配置や、それらと結晶の柔軟性に関する知見を得ることが出来た。また、光による結晶の柔軟性の可逆的なスイッチング現象を新たに見出し、そのメカニズムを解析すると、紫外光によって亀裂が入り脆性化、可視光によって亀裂が回復し柔軟性を取り戻していることが分かった。これらの成果は、次世代の機能性材料開発の足がかりとなり、持続可能な材料としての応用が期待される。

Report

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

    (14 results)

All 2024 2023 2022

All Journal Article (6 results) (of which Peer Reviewed: 6 results,  Open Access: 3 results) Presentation (8 results) (of which Int'l Joint Research: 2 results)

  • [Journal Article] Mechanically Induced Transient Fluorescence of Photochromic Diarylethene Crystals for Sensing and Security Material2024

    • Author(s)
      Nishimura Ryo、Kobayashi Yuka、Sotome Hikaru、Miyasaka Hiroshi、Morimoto Masakazu
    • Journal Title

      Advanced Optical Materials

      Volume: - Issue: 24

    • DOI

      10.1002/adom.202400143

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] A turn-on mode fluorescent diarylethene having an azacrown ether receptor: Metal-ion-gated enhancement of the photoreactivity and fluorescence2023

    • Author(s)
      Takaku Shota、Nishimura Ryo、Morimoto Masakazu
    • Journal Title

      Dyes and Pigments

      Volume: 216 Pages: 111354-111354

    • DOI

      10.1016/j.dyepig.2023.111354

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Multicolor Photochromism of Two-Component Diarylethene Crystals Containing Oxidized and Unoxidized Benzothiophene Groups2022

    • Author(s)
      Nishimura Ryo、Nagakawa Yurika、Morimoto Masakazu
    • Journal Title

      Crystals

      Volume: 12 Issue: 12 Pages: 1730-1730

    • DOI

      10.3390/cryst12121730

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Phototunable Golden Luster Microcrystalline Film of Photochromic Diarylethene2022

    • Author(s)
      Nakagawa Yuma、Nishimura Ryo、Morimoto Masakazu、Yokojima Satoshi、Nakamura Shinichiro、Uchida Kingo
    • Journal Title

      Bulletin of the Chemical Society of Japan

      Volume: 95 Issue: 10 Pages: 1438-1444

    • DOI

      10.1246/bcsj.20220169

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] White light emission generated by two stacking patterns of a single organic molecular crystal2022

    • Author(s)
      Nakagawa Yuma、Kinoshita Kuon、Kasuno Megumi、Nishimura Ryo、Morimoto Masakazu、Yokojima Satoshi、Hatakeyama Makoto、Sakamoto Yuki、Nakamura Shinichiro、Uchida Kingo
    • Journal Title

      Materials Advances

      Volume: 3 Issue: 16 Pages: 6466-6473

    • DOI

      10.1039/d2ma00670g

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Turn-on mode fluorescent diarylethene containing neopentyl substituents that undergoes all-visible-light switching2022

    • Author(s)
      R. Nishimura, E. Fujisawa, I. Ban, R. Iwai, S. Takasu, M. Morimoto, M. Irie
    • Journal Title

      Chemical Communications

      Volume: 58 Issue: 30 Pages: 4715-4718

    • DOI

      10.1039/d2cc00554a

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Presentation] 弾性・塑性変形を示すジアリールエテン結晶の光制御2023

    • Author(s)
      福地純、西村涼、森本正和
    • Organizer
      第31回有機結晶シンポジウム
    • Related Report
      2023 Annual Research Report
  • [Presentation] Dynamic mechanofluorochromism of photochromic molecular crystal2023

    • Author(s)
      Ryo Nishimura, Hikaru Sotome, Hiroshi Miyasaka, Masakazu Morimoto
    • Organizer
      ICP2023
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Dynamic mechanofluorochromism of diarylethene crystal2023

    • Author(s)
      Ryo Nishimura, Hikaru Sotome, Hiroshi Miyasaka, Masakazu Morimoto
    • Organizer
      ISOP2023
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 動的メカノフルオロクロミズムを示すジアリールエテン結晶の発見と機構解明2023

    • Author(s)
      西村 涼、小林 優加、五月女 光、宮坂 博、森本 正和
    • Organizer
      2023年光化学討論会
    • Related Report
      2023 Annual Research Report
  • [Presentation] ジアリールエテン結晶の動的メカノフルオロクロミズムの機能とその耐久性の向上指針2023

    • Author(s)
      西村涼、森本正和
    • Organizer
      第31回有機結晶シンポジウム
    • Related Report
      2023 Annual Research Report
  • [Presentation] 新奇なメカノフルオロクロミズムを示すジアリールエテン結晶2023

    • Author(s)
      西村涼
    • Organizer
      日本化学会 第103春季年会 (2023)
    • Related Report
      2022 Research-status Report
  • [Presentation] 蛍光性ジアリールエテンの光反応量子収率に対する反応点アルキル置換 基の効果2022

    • Author(s)
      西村涼
    • Organizer
      2022年光化学討論会
    • Related Report
      2022 Research-status Report
  • [Presentation] ピレン環を有するジアリールエテン結晶のメカノフルオロクロミズム2022

    • Author(s)
      西村涼
    • Organizer
      第30回有機結晶シンポジウム
    • Related Report
      2022 Research-status Report

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Published: 2022-04-19   Modified: 2025-01-30  

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