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Smart Access to Sequentially and Architecturally Controlled Block Polymers via a Simple Catalytic Polymerization System

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Title: Smart Access to Sequentially and Architecturally Controlled Block Polymers via a Simple Catalytic Polymerization System
Authors: Xia, Xiaochao Browse this author
Suzuki, Ryota Browse this author
Takojima, Kaoru Browse this author
Jiang, Dai-Hua Browse this author
Isono, Takuya Browse this author
Satoh, Toshifumi Browse this author →KAKEN DB
Keywords: block copolyesters
alkali metal carboxylate catalysts
ring-opening alternating copolymerization
ring-opening polymerization
switchable polymerization
Issue Date: 21-May-2021
Publisher: American Chemical Society
Journal Title: ACS catalysis
Volume: 11
Issue: 10
Start Page: 5999
End Page: 6009
Publisher DOI: 10.1021/acscatal.1c00382
Abstract: Self-switchable polymerization is an attractive strategy for precisely controlling the microstructures and monomer sequences of polymers. To date, catalysts for the polymerization are generally limited to metal complex catalysts and some organocatalysts. In this article, we report that simple, inexpensive, and environmentally benign alkali metal carboxylate catalysts smartly switch between the ring-opening alternating copolymerization of epoxides with cyclic anhydrides and the ring-opening polymerization of cyclic esters to create a single synthetic step and thus achieve sequence-controlled multiblock polyesters. This polymerization system shows extremely high effectiveness and versatility for different combinations of epoxides, cyclic anhydrides, cyclic esters, and initiators. As a result, various types of complex block copolymers, such as AB diblocks, BAB triblocks, star copolymers, hyperbranched copolymers, and CAB triblocks, can be simply prepared and postpolymerization modification can be performed. As a proof of concept, polyester-based elastomers and adhesives were successfully synthesized via one-step procedures by reasonably designing the monomer structures of triblock copolymers, showing great potential for industrial applications of polyesters.
Rights: This document is the Accepted Manuscript version of a Published Work that appeared in final form in ACS Catalysis, copyright c American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see
Type: article (author version)
Appears in Collections:工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 磯野 拓也

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