Journal
POLYMER
Volume 47, Issue 11, Pages 4018-4025Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.polymer.2006.02.037
Keywords
carbene; ring-opening polymerization; lactide
Categories
Ask authors/readers for more resources
An organocatalytic approach to living and condensation polymerization using N-heterocyclic carbenes as nucleophilic catalysts is detailed. The N-heterocyclic carbene catalyst platform is extremely versatile with the nature of the substituents having a pronounced effect upon catalyst stability and activity towards different substrates. Rapid screening of libraries of catalysts provided a basic understanding of catalyst structure (sterics, electronics, etc.) as it influences the polymerization rate, control, substrate and range of molecular weights. ROP from an immiscible ionic liquid (precatalyst reservoir) and a THF solution of monomer and initiator is presented as a simplified method of carbene formation. In situ activation of the ionic liquid generated a nucleophilic N-heterocyclic carbene, which migrates to the organic phase effecting ROP. Other simplified methods of generating carbene thermally from carbene adducts are also presented as polymerization catalysts. (c) 2006 Published by Elsevier Ltd.
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