Hybrid Block Copolymer Synthesis by Merging Photoiniferter and Organocatalytic Ring-Opening Polymerizations.

Angewandte Chemie
Yening XiaBrent S Sumerlin

Abstract

Access to block copolymers from monomers that do not polymerize via a common mechanism requires initiation from a multifunctional species that allows orthogonal polymerization chemistries. We disclose a strategy to provide well-defined polyacrylamido-b-polyether block copolymers by a one-pot combination of photoiniferter polymerization and organocatalytic ring-opening polymerization (ROP) using a hydroxy-functionalized trithiocarbonate photoiniferter as the dual initiator at ambient temperature. Our results reveal good compatibility between the two polymerization systems and highlight that they can be performed in arbitrary order or simultaneously with good retention of the thiocarbonylthio functionality. We also demonstrate selective temporal control over the photoiniferter polymerization during concurrent ROP. We harnessed the efficiency of combining these polymerization systems to provide tailor-made block copolymers from chemically distinct monomers.

References

Jul 19, 2012·Angewandte Chemie·Felix H SchacherIan Manners
May 15, 2015·Macromolecular Rapid Communications·Rebecca Klein, Frederik R Wurm
Jul 17, 2015·Chemical Reviews·Patrizio RaffaAntonius A Broekhuis
Mar 16, 2016·Chemical Reviews·Mao ChenJeremiah A Johnson
Aug 2, 2018·Angewandte Chemie·Nathaniel CorriganCyrille Boyer
Sep 22, 2018·Macromolecular Rapid Communications·Xiaofeng GuoSan H Thang

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Citations

Nov 10, 2021·Macromolecular Rapid Communications·Matthias Hartlieb

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