Precision Synthesis of Core-Cross Linked Star Polymers via Single Chain Folding of Sequence-Controlled Graft Copolymers
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초록
내용
We established a method for precision synthesis of core-cross linked star (CCS) polymers, inspired by the folding process of protein. Foldable graft copolymers with a designated number of side chains and dimerizable groups were synthesized by graft-through ring-opening metathesis polymerization. By inducing intramolecular photodimerization, the backbone chain collapsed into a compact globular core. Through transcribing molecular information written on the 1D polymeric precursor into the 3D globular polymer, precision control over the structural parameters of CCS polymer was achieved. Our strategy allows us to engineer spatial organization of subdomains in the CCS polymer using sequence-controlled graft copolymer as a foldable precursor. The resulting subdomain-defined CCS polymers showed drastically different self-assembly behavior indicating that spatial arrangement of subdomain can be determined by precursor-sequence.