期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 61, 期 20, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.202202660
关键词
Electrochemical Selectivity; Multi-Block Copolymers; Ring-Opening Copolymerization; Switchable Copolymerization
资金
- National Natural Science Foundation of China, Basic Science Center Program [51988102]
- National Natural Science Foundation of China [52073272]
- National Key R&D Program of China [2021YFA1501700]
This paper presents an electrochemically switchable strategy for copolymerization using heterometallic complexes, allowing control over the composition and properties of multi-block copolymers. The strategy enables the synthesis of polymers with different functionalities.
Electrochemical redox-control is an emerging strategy for the regulation of polymerization process without the addition of external oxidants and reductants, which enables the control over composition, microstructure and properties of the polymer products. In this paper, based on the chemical selectivity of heterometallic Salen-Co-Mn complexes of different valences, an electrochemically switchable strategy was developed for the copolymerization of lactide (LA), CO2 and epoxides. The switchable redox reactions endowed this system with the capability to easily synthesize a multi-block copolymer of polylactide (PLA) and polycarbonate (PC). Moreover, the multi-block copolymer could he further modified by introducing various monomers with different microstructures and functional groups.
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