Supramolecular assembly in elastomer controlled by mechanical stimulus and development for mechano-sensitive materials

• Project/Area Number: 18K14187
• Research Category: Grant-in-Aid for Early-Career Scientists
• Allocation Type: Multi-year Fund
• Review Section: Basic Section 32020:Functional solid state chemistry-related
• Research Institution: Kanazawa University
• Principal Investigator: Shogo Amemori 金沢大学, ナノマテリアル研究所, 助教 (80736736)
• Project Period (FY): 2018-04-01 – 2021-03-31
• Project Status: Completed (Fiscal Year 2020)
• Budget Amount: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000); Fiscal Year 2020: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000); Fiscal Year 2019: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000); Fiscal Year 2018: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
• Keywords: 電荷移動錯体 / エラストマー / ポリジメチルシロキサン / 刺激応答性 / 超分子 / 電荷移動相互作用 / 力学刺激応答 / 刺激応答材料

Outline of Final Research Achievements

Association behavior and mechano-responsiveness of charge-transfer complexes between pyrene and pyromellitic diimide derivatives were evaluated in poly(dimethylsiloxane) (PDMS) elastomers. Association constants of the charge-transfer complexes hardly changed by mechanical stimulus of stretching. On the other hand, the association behavior were independent of a cross-linking density of the PDMS elastomers. It showed that PDMS elastomer is a useful solid solvent for supramolecular systems utilizing charge-transfer interactions. Moreover we revealed the solvent effect of PDMS solvents on aromatic donor-acceptor interaction for the first time.

Academic Significance and Societal Importance of the Research Achievements

電荷移動相互作用（芳香族ドナーアクセプター相互作用）は超分子を形成する駆動力として数多く用いられており、その会合定数が周囲の媒体でどのような影響を受けるか？は重要な知見である。本研究成果はポリジメチルシロキサン（エラストマー）が電荷移動相互作用に与える影響（架橋や力学的刺激、溶媒効果）を世界で初めて明らかとした。今後、ポリジメチルシロキサンを媒体とした機能性超分子材料への展開が期待される。

Research Products

• [Journal Article] Poly(dimethylsiloxane) and oligo(dimethylsiloxane) solvent effects on aromatic donor?acceptor interactions (2021)
  • Author(s): Amemori Shogo、Kikuchi Kyoka、Mizuno Motohiro
  • Journal Title: Chemical Communications Volume: 57 Issue: 9 Pages: 1141-1144
  • DOI: 10.1039/d0cc06638a
  • Peer Reviewed / Open Access
• [Presentation] 架橋密度の異なるPDMSエラストマー中における電荷移動錯体の会合特性 (2021)
  • Author(s): 深田智哉, 水野元博, 井田朋智, 雨森翔悟, 重田泰宏, 栗原拓也
  • Organizer: 日本化学会第101春季年会
• [Presentation] PDMSエラストマー媒体中におけるピレン誘導体とピロメリット酸ジイミド誘導体間の会合挙動 (2020)
  • Author(s): 深田智哉、雨森翔悟、重田泰宏、井田朋智、水野元博
  • Organizer: 日本化学会第100春季年会
• [Presentation] PDMS媒体中における電荷移動錯体の会合挙動 (2019)
  • Author(s): 雨森 翔悟、菊池 叶佳、水野 元博
  • Organizer: 第17回ホストゲスト・超分子化学シンポジウム
• [Presentation] Association Behavior of Charge-Transfer Complex in PDMS Elastomer (2018)
  • Author(s): Kyoka Kikuchi, Shogo Amemori, Tomonori Ida,Motohiro Mizuno
  • Organizer: 4th International Symposium on Center of Excellence for Innovative Material Sciences Based on Supramolecules
  • Int'l Joint Research
• [Presentation] PDMSエラストマー中における電荷移動錯体の会合挙動 (2018)
  • Author(s): 菊池叶佳、雨森翔悟、水野元博
  • Organizer: 平成30年度北陸地区講演会と研究発表会