Fabrication of Photomobile Materials Using Aligned Chemical and Photoreactive Films

2021 Fiscal Year Final Research Report

• Project/Area Number: 19K05603
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Review Section: Basic Section 35020:Polymer materials-related
• Research Institution: University of Hyogo
• Principal Investigator: Fukae Ryohei 兵庫県立大学, 環境人間学部, 名誉教授 (90165241)
• Co-Investigator(Kenkyū-buntansha): 川月 喜弘 兵庫県立大学, 工学研究科, 教授 (60271201) ; 近藤 瑞穂 兵庫県立大学, 工学研究科, 准教授 (70447564)
• Project Period (FY): 2019-04-01 – 2022-03-31
• Keywords: 液晶高分子 / N-ベンジリデンアニリン / 光相転移

Outline of Final Research Achievements

The applicant studied the change in mechanical properties upon photoirradiation of polymers with N-benzylideneaniline (NBA) side chains, which photoisomerize upon UV light irradiation, and reported that the change in mechanical properties can be induced in uniaxially oriented films to a greater extent. In addition, the applicant focused on the decrease in physical properties upon light irradiation and investigated the development of photo-responsive liquid crystal adhesives. The thermal properties of NBA polymers change reversibly upon light irradiation and the adhesive strength of the polymers is isothermally controlled. Furthermore, the applicant found that the transition temperature decreases only during light irradiation and that photoadhesion and delamination can be repeated by UV light irradiation.

Free Research Field

高分子化学

Academic Significance and Societal Importance of the Research Achievements

本研究において簡単な光応答性液晶であるNBAを用いて機械物性を等温的に制御できることが明らかとなった。この手法を拡張することで光エネルギーの効率的な利用など光機能性材料のより効率的な合成によって持続可能な発展に貢献できるものと考えられる。