Mesoscopically Sized and Restricted PolymerThin Films for Creation of New Photoresponsive Functions

2015 Fiscal Year Final Research Report

• Project/Area Number: 23225003
• Research Category: Grant-in-Aid for Scientific Research (S)
• Allocation Type: Single-year Grants
• Research Field: Polymer chemistry
• Research Institution: Nagoya University
• Principal Investigator: Seki Takahiro 名古屋大学, 工学(系)研究科(研究院), 教授 (40163084)
• Co-Investigator(Kenkyū-buntansha): TAKEOKA Yukikazu 名古屋大学, 大学院工学研究科, 准教授 (20303084) ; NAGANO Shusaku 名古屋大学, ベンチャービジネスラボラトリー, 准教授 (40362264) ; HARA Mitsuo 名古屋大学, 大学院工学研究科, 助教 (10631971) ; KAWATSUKI Nobuhiro 兵庫県立大学, 大学院工学研究科, 教授 (60271201)
• Project Period (FY): 2011-04-01 – 2016-03-31
• Keywords: 光配向プロセス / ブロック共重合体 / 高分子ブレンド / 超微小塗布 / 表面リンクル / 自由界面制御 / アゾベンゼン

Outline of Final Research Achievements

The photoalignment technology was initiated approximately 30 years ago, and now has become a significant tool in industry to fabricate liquid crystal display devices. However, many fundamental issues still need to be elucidated. This project dealt with the photoalighment behavior in systems containing mesoscopic structures, in restricted sized films, and further non-plane surface systems. Herein, we attempted to elucidate the mechanism in the photoalighment process of microphase separation structures in block copolymer films, phase separation structure of blended polymers in small sized state obtained by inkjet printing, and proposed the photoresponsive surface wrinkle systems. Through these approaches, deeper understandings on the photoalignment processes were obtained, and new procedures were proposed. In particular, we originally proposed the photoalignment processes based on the manipulation of the free surface of liquid crystal polymer films.

Free Research Field

高分子化学