Stereoselective photoredox ring-opening polymerization of O-carboxyanhydrides

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 -carboxyanhydri...

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Bibliographic Details
Published in:Nature communications 2018-04, Vol.9 (1), p.1559-10, Article 1559
Main Authors: Feng, Quanyou, Yang, Lei, Zhong, Yongliang, Guo, Dong, Liu, Guoliang, Xie, Linghai, Huang, Wei, Tong, Rong
Format: Article
Language:English
Subjects:
639/638/439/890
639/638/455/941
639/638/455/959
Biodegradability
Biodegradation
Catalysts
Chemical synthesis
Chirality
Coordination compounds
Copolymerization
Copolymers
Functional groups
Humanities and Social Sciences
Iridium
Isotacticity
Lactones
Molecular weight
multidisciplinary
Polyester resins
Polyesters
Polymerization
Ring opening polymerization
Science
Science (multidisciplinary)
Zinc
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Summary: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 ( M w / M n  
ISSN:2041-1723
2041-1723
DOI:10.1038/s41467-018-03879-5