Ring-Opening Polymerization of Cyclic Esters by an Enantiopure Heteroscorpionate Rare Earth Initiator

摘要

Polyesters have been of great interest over the last three decades in applications in the medical field owing to their biodegradable,biocompatible,and permeable properties.Ring-opening polymerization(ROP)of cyclic esters has been the major method employed to synthesize this type of polymer.Of the wide variety of polyesters made for this way,poly-(D,L)-lactide is particularly significant because of the presence of a chiral carbon atom in the repeating unit.