Development of Functional Material Based on The Dynamic Nature of Macromolecular Roraxane Containing Cyclodextrin

2020 Fiscal Year Final Research Report

• Project/Area Number: 19K15620
• Research Category: Grant-in-Aid for Early-Career Scientists
• Allocation Type: Multi-year Fund
• Review Section: Basic Section 35010:Polymer chemistry-related
• Research Institution: Shinshu University (2020); Tokyo Institute of Technology (2019)
• Principal Investigator: Akae Yosuke 信州大学, 繊維学部, 日本学術振興会特別研究員 (40837415)
• Project Period (FY): 2019-04-01 – 2021-03-31
• Keywords: 高分子ロタキサン / シクロデキストリン / ウレアエンドキャップ / ロタキサン架橋剤 / ポリロタキサン / ポリウレタン

Outline of Final Research Achievements

In this work, development of macromolecular rotaxane containing cyclodextrin was studied through applying urea end-cap method, which was developed by the author as a synthetic method of rotaxane, to polymer system. The polymer having isocyanate group on the polymer end was necessary for the synthesis. It was prepared by the synthesis of the polymer containing acylazide group on the polymer end by living polymerization, and successive Curtius rearrangement via heating. Moreover, it was clarified that the reaction between the polymer containing isocyanate groups on the both polymer ends and pseudorotaxane afforded polyrotaxane having low coverage ratio in high yield and facile manner. In addition to above studies, the synthesis and analysis of model rotaxane having low molecular weight were also evaluated.

Free Research Field

超分子化学、高分子化学

Academic Significance and Societal Importance of the Research Achievements

高分子ロタキサンは、そのユニークな構造に由来する物性に興味が持たれるものの、合成が容易ではないために研究例は限られている。本研究の成果は、この課題に対して新たな方法論を提供するものであり、高分子ロタキサンの合成、物性評価、および素材としての応用に寄与するものと位置づけられる。また、本研究で取り扱ったロタキサン構造がポリマーの物性向上に寄与したことが分かったため、更なる検討により素材としての実用化も視野に入る。本研究の成果は上記の学術的、社会的意義を有する。