海洋工程材料团队
[研究进展]夏叶宁同学融汇光控自由基聚合与有机催化开环聚合实现了嵌段聚合物的串联及同步合成(相关成果发表在Angewandte Chemie International Edition)
发布时间: 2021-06-25 浏览次数: 164

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


 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.

链接:https://doi.org/10.1002/anie.202106418