Stereoselective photoredox ring-opening polymerization of O-carboxyanhydrides

Quanyou Feng, Lei Yang, Yongliang Zhong, Dong Guo, Guoliang Liu, Linghai Xie (), Wei Huang and Rong Tong ()
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Quanyou Feng: Nanjing University of Posts and Telecommunications
Lei Yang: Nanjing University of Posts and Telecommunications
Yongliang Zhong: Virginia Polytechnic Institute and State University
Dong Guo: Virginia Polytechnic Institute and State University
Guoliang Liu: Virginia Polytechnic Institute and State University
Linghai Xie: Nanjing University of Posts and Telecommunications
Wei Huang: Nanjing University of Posts and Telecommunications
Rong Tong: Virginia Polytechnic Institute and State University

Nature Communications, 2018, vol. 9, issue 1, 1-10

Abstract: Abstract Biodegradable polyesters with various tacticities have been synthesized by means of stereoselective ring-opening polymerization of racemic lactide and β-lactones but with limited side-chain groups. However, stereoselective synthesis of functional polyesters remains challenging from O-carboxyanhydrides that have abundant pendant side-chain functional groups. Herein we report a powerful strategy to synthesize stereoblock polyesters by stereoselective ring-opening polymerization of racemic O-carboxyanhydrides with the use of photoredox Ni/Ir catalysts and a selected Zn complex with an achiral ligand. The obtained stereoblock copolymers are highly isotactic with high molecular weights ( > 70 kDa) and narrow molecular weight distributions (Mw/Mn

Date: 2018
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DOI: 10.1038/s41467-018-03879-5

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