Higher-Order Structure and Magneto-Optical Property of Chiral Polyradicals Programmed by Their Monomer Sequence

2019 Fiscal Year Final Research Report

• Project/Area Number: 16H03815
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Nanostructural chemistry
• Research Institution: Niigata University
• Principal Investigator: KANEKO TAKASHI 新潟大学, 自然科学系, 教授 (90272856)
• Co-Investigator(Kenkyū-buntansha): 青木 俊樹 新潟大学, 自然科学系, 教授 (80212372) ; 寺口 昌宏 新潟大学, 自然科学系, 助教 (30334650)
• Project Period (FY): 2016-04-01 – 2020-03-31
• Keywords: π共役高分子 / 光学活性らせん構造 / ポリラジカル / アントラセン / ポリ（アリーレンエチニレン） / シーケンシャル高分子 / ポリ(フェニルアセチレン) / 分子磁性

Outline of Final Research Achievements

Polyradicals which have stable radicals as magnetic source will be possible candidates for new magnetic materials, because various properties can be programmed by their molecular design. For example, new magnetooptical properties will be expected for the polyradicals in combination with their one-handed helical structure. We have succeeded in synthesizing helical polyradicals whose stable one-handed helical structure and magnetic alignment are programmed by their monomer sequences, and found that their strong antiferromagnetic interaction were derived by their well-packed helical structure which were controlled by their monomer sequences.

Free Research Field

機能性高分子合成

Academic Significance and Societal Importance of the Research Achievements

モノマー連鎖の配列に誘導された精密な立体構造に依存した優れた機能は、生体内の高分子で見られるが、共役高分子などの合成高分子でも分子設計により可能であることを示した点に学術的意義があり、同様の設計手法は磁気光学的性質だけでなく、他の機能分子にも展開が期待できる点で社会的意義がある。