Synthesis of ladder polymers via supramolecular polymer formation and precise control of their structures and properties

2021 Fiscal Year Final Research Report

• Project/Area Number: 20K15307
• Research Category: Grant-in-Aid for Early-Career Scientists
• Allocation Type: Multi-year Fund
• Review Section: Basic Section 34010:Inorganic/coordination chemistry-related
• Research Institution: University of Tsukuba
• Principal Investigator: Mihara Nozomi 筑波大学, 数理物質系, 助教 (00867989)
• Project Period (FY): 2020-04-01 – 2022-03-31
• Keywords: ラダーポリマー / Π平面性分子

Outline of Final Research Achievements

Ladder polymers are an attractive class of polymer where monomers are linked by more than two bonds and generally have a rigid ordered structure. If these ladder polymers have stimuli-responsiveness, it is expected that reversible structural transformation between polymers with different ordered structures will be possible. In this study, we aimed to construct new ladder polymers with flexibility that can be transformed in response to the chemical stimuli. First, a naphthalenediimide with linkage moieties was synthesized as a monomer molecule. Next, ladder-shaped dimers were synthesized, and it was found that the dimers encapsulated aromatic molecules. Furthermore, we synthesized linear polymers, which are the precursors of ladder polymers, and investigated the synthesis of ladder polymers.

Free Research Field

錯体化学、超分子化学

Academic Significance and Societal Importance of the Research Achievements

刺激応答性を有するラダーポリマーはこれまでにほとんど報告されていない。本研究で開拓したモノマー間での非共有結合を利用したラダーポリマーの新規合成法を用いることで、外部環境や化学刺激に応答して秩序構造を自在に可逆変換可能な新規材料を構築できると考えられる。