Precision oxidative polymerization catalyzed by an artificial enzyme to synthesize aromatic polyethers with high performances and functions

2022 Fiscal Year Final Research Report

• Project/Area Number: 20K05610
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Review Section: Basic Section 35010:Polymer chemistry-related
• Research Institution: Okayama University of Science
• Principal Investigator: Higashimura Hideyuki 岡山理科大学, 理学部, 教授 (00562224)
• Project Period (FY): 2020-04-01 – 2023-03-31
• Keywords: 人工酵素触媒 / 精密酸化重合 / 芳香族ポリエーテル / 超低誘電率 / 熱硬化性基 / pushu/pull型置換基

Outline of Final Research Achievements

We found enzyme model-catalyzed precision oxidative polymerization of phenols and thereby have synthesized new aromatic polyethers. The aim of this research is to maximize the characteristics of the catalysts and to provide higher performance and functionalization to the polymers. (A) The polymerization of 2-(2-adamantyl)phenol followed by reprecipitation produced a new polymer with ultra-low dielectric constant of 2.17. (B) By the polymerization of 2-ethynylphenol, a polymer with Mn of ca. 5,000 remaining the thermosetting group was obtained. (C) The polymerization of 2-methoxy-5-cyanophenol, in which the two substituents cancel each drawback through the resonance at the para position, yielded a new polymer with push/pull-type substituents.

Free Research Field

高分子合成、レドックス触媒

Academic Significance and Societal Importance of the Research Achievements

次世代６Ｇ通信システムにおいて高周波での超低遅延性を実現するため、アンテナ配線板の絶縁材料には高熱安定性だけでなく低誘電特性も不可欠となってきた。（A）ポリマーは嵩高いアダマンチル基の導入により、（B）ポリマーは熱硬化-発泡によるポーラス化させれば、高速通信用の低誘電絶縁材料として有望である。またＥＶ用キャパシタでは軽量高容量と急速放電が求められており、（C）ポリマーは電子供与/吸引基の共鳴により高分極を持ち、高容量コンデンサー用高誘電絶縁材料として期待できる。