Innovative physical functional supramolecular materials with reversible non-covalent and movable crosslinking point

2017 Fiscal Year Final Research Report

• Project/Area Number: 16K14006
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Polymer chemistry
• Research Institution: Osaka University
• Principal Investigator: HARADA Akira 大阪大学, 理学研究科, 特任教授(常勤) (80127282)
• Co-Investigator(Renkei-kenkyūsha): TAKASHIMA YOSHINORI 大阪大学, 大学院理学研究科, 講師 (40379277)
• Project Period (FY): 2016-04-01 – 2018-03-31
• Keywords: シクロデキストリン / ホスト―ゲスト化学 / 分子認識 / 包接錯体形成 / 分子接着

Outline of Final Research Achievements

Functional polymeric materials constructed by non-covalent bonds have attracted considerable attention due to their beneficial stretching and self-healing properties. We chose host-guest interactions using cyclodextrins (CDs) as host molecules to realize supramolecular materials with stretching and self-healing properties. Notably, an inclusion complex of a CD and a guest molecule functions as a reversible bond in a material. Herein, we studied the relationship between the mechanical properties of the materials and host-guest interactions based on the association constants of CDs with guest molecules and molecular structures of the guest molecules. In particular, the αCDAAmMe-Dod hydrogel with a dodecyl group with a long, rod-like structure showed better rupture stress and strain (1250%). The βCDAAmMe-AdAAm hydrogel with a spherical adamantyl acrylamide (AdAAm) group showed better self-healing properties.

Free Research Field

高分子化学