Journal
MACROMOLECULES
Volume 56, Issue 6, Pages 2370-2378Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.macromol.3c00154
Keywords
-
Categories
Ask authors/readers for more resources
Switchable polymerization catalysis is achieved through reversible carboxylation of a commercial salen-manganese (Mn) complex, enabling the precise synthesis of multiblock copolymers.
The precise synthesis of multiblock copolymers is of great significance in polymer chemistry. Switchable polymerization catalysis is developed via reversible carboxylation of a commercial salen-manganese (Mn) complex. The essence of reversible carboxylation was the transition between Mn alkoxide (Mn-OR) and carboxylate (Mn-OCOR). The unique toggling mechanism of two active species for different pathways was applied to the chemoselective copolymerization of epoxides, anhydrides, and LA. The anhydrides act as both a self-switching agent and feedstock in polymerization. Needless of the cocatalyst or chain-transfer agent (CTA), different poly(anhydride-epoxide) segments were in situ introduced into the PLA chain in batches, yielding various novel multiblock copolymers with precise control. Theoretical modulations were conducted to provide a robust explanation for the switching copolymerization mechanism.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available