[23p-E201-1~6] Topological Materials Science for Creation of Innovative Functions

[23p-E201-6] Topological Transformation of Polymers Using Cyclic Topology with Dynamic Nature

〇Daisuke Aoki^1,2 (1.Tokyo Tech., 2.JST-PRESTO)

Keywords:radical, dynamic covalent chemistry, cyclic topology

This study describes the topological transformation of polymers using cyclic topology with dynamic covalent chemistry. Systems based on dynamic covalent chemistry use exchange reactions of bis(2,2,6,6-tetramethylpiperidin-1-yl)disulfide (BiTEMPS) units that behave as stable covalently bound structures at room temperature, while they exchange disulfide bonds above 80 ºC. Controlling the dynamic nature of BiTEMPS-based low-molecular-weight compounds and polymers with cyclic topologies gives us unique chemistry based on topological transformation of polymer chains.