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Functionalized Polyesters via Stereoselective Electrochemical Ring-Opening Polymerization of O-Carboxyanhydrides

preprint
submitted on 06.05.2020 and posted on 11.05.2020 by Yongliang Zhong, quanyou feng, xiaoqian wang, jia chen, wenjun cai, Rong Tong
Ring-opening polymerization is used to prepare polyesters with precisely controlled molecular weights, molecular weight distributions, and tacticities. Herein, we report a newly developed Co/Zn catalytic system that can be activated by an electrical current to mediate efficient ring-opening polymerization of enantiopure O-carboxyanhydrides, allowing for the synthesis of isotactic functionalized polyesters with high molecular weights (>140 kDa) and narrow molecular weight distributions (Mw/Mn < 1.1). We also demonstrate that these catalysts can be used for stereoselective ring-opening polymerization of racemic O-carboxyanhydrides to synthesize syndiotactic or stereoblock copolymers with different glass transition temperatures compared with their atactic counterparts.

Funding

Photoredox Polymerization of O-Carboxyanhydrides for Functionalized Polyesters

Directorate for Mathematical & Physical Sciences

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ACS-Petroleum Research Foundation (57926-DNI-7)

History

Email Address of Submitting Author

rtong@vt.edu

Institution

Virginia Tech

Country

United States

ORCID For Submitting Author

0000-0002-2034-9272

Declaration of Conflict of Interest

Provisional patents (U.S. Patent Application No: 62/414,016 and VTIP No. 19-112) have been filed pertaining to the results presented in this paper.

Version Notes

first version

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