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Development of mechanorisponsive metallopolymers with high toughness

Research Project

Project/Area Number 21K05203
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 35020:Polymer materials-related
Research InstitutionKansai University

Principal Investigator

Sogawa Hiromitsu  関西大学, 化学生命工学部, 准教授 (90709297)

Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2023: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2022: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2021: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywordsメカノクロミズム / ポリウレタン / 白金錯体 / メタロポリマー / エラストマー / 蛍光 / 引張試験
Outline of Research at the Start

本研究では,蛍光色を自在チューニング可能なメカノクロミックポリウレタンの合成とその機械的特性の評価を目的とする。この目的達成のために,種々の白金-アセチリド錯体をポリウレタン主鎖中に導入し,その蛍光特性と機械的特性を関連付けながら,各種測定を行う。これに加え,本系で合成するポリウレタンの構造と力学応答性の相関,つまりはナノレベルの分子構造がマクロレベルの物性に及ぼす影響を明らかにすることを目標とする。

Outline of Final Research Achievements

In this study, mechanochromic metallopolymers with good toughness and flexibility, in which the fluorescent color changes sensitively in response to external stress, were developed by incorporating mechanically responsive platinum complexes in the polyurethane scaffolds.
Polyurethanes obtained by platinum-acetylide complexes with alcohol moieties as monomers exhibited fluorescence changes from orange to brown upon grinding. The segmented polyurethanes obtained by adding long-chain diols had large molecular weights, excellent film-forming properties, and good mechanical properties. The segmented polyurethanes containing platinum-acetylide complex also exhibited mechanochromic behavior, changing color and fluorescence color during elongation and compression.

Academic Significance and Societal Importance of the Research Achievements

メカノクロミック挙動を示す材料は,応力検知,破壊機構の解明,危険予知等が可能となる。本研究で得られた白金錯体含有ポリウレタンもこれらの用途への応用が期待される。またメカノクロミック部位をポリマー主鎖中に組み込むことで,力学応答性部位が高分子マトリクス中から流出することもなく,耐久性のある材料開発が見込まれる。

Report

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

    (3 results)

All 2023

All Journal Article (1 results) (of which Peer Reviewed: 1 results) Presentation (2 results)

  • [Journal Article] Polyurethanes containing platinum in the main chain: synthesis, structure and mechanofluorochromism2023

    • Author(s)
      Sogawa Hiromitsu、Abe Momoka、Shintani Ryuhei、Sotani Taichi、Tabaru Kazuki、Watanabe Takeshi、Obora Yasushi、Sanda Fumio
    • Journal Title

      Polymer Journal

      Volume: 55 Issue: 11 Pages: 1119-1128

    • DOI

      10.1038/s41428-023-00822-4

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Presentation] 白金錯体含有ポリウレタンエラストマーの合成とメカノクロミック特性2023

    • Author(s)
      新谷龍平・安倍百花・曽川洋光・三田文雄
    • Organizer
      第69回高分子研究発表会(神戸)
    • Related Report
      2023 Annual Research Report
  • [Presentation] 力学刺激に応答する蛍光性ポリウレタンエラストマーの開発2023

    • Author(s)
      多田知哉・三田文雄・曽川洋光
    • Organizer
      第34回エラストマー討論会
    • Related Report
      2023 Annual Research Report

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Published: 2021-04-28   Modified: 2025-01-30  

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