N-Heterocyclic Carbenes for the Organocatalytic Ring-Opening Polymerization of ε-Caprolactone

被引：146

作者：

Kamber, Nahrain E. ^{[1
]}

Jeong, Wonhee ^{[1
]}

Gonzalez, Silvia ^{[1
]}

Hedrick, James L. ^{[1
]}

Waymouth, Robert M. ^{[1
]}

机构：

[1] Stanford Univ, Dept Chem, Stanford, CA 94305 USA

来源：

MACROMOLECULES | 2009年 / 42卷 / 05期

关键词：

LIVING POLYMERIZATION; CYCLIC ESTERS; ORGANIC CATALYSTS; TRANSESTERIFICATION/ACYLATION REACTIONS; ANIONIC-POLYMERIZATION; POLY(ETHYLENE GLYCOL); LACTIDE; LACTONES; POLYESTERS; COMPLEXES;

D O I：

10.1021/ma802618h

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

We report the synthesis of poly(epsilon-caprolactone) utilizing N-heterocyclic carbene (NHC) organocatalysts. Sterically unencumbered NHCs were found to be highly effective for the living ring-opening polymerization of E-caprolactone under mild conditions. The NHCs were able to produce poly (epsilon-caprolactone)s with controlled molecular weights, low polydispersities, and well-defined end groups derived from the alcohol initiator. Star-shaped poly(epsilon-caprolactone)s with three and four arms were prepared using NHC organocatalysts and characterized. by H-1 NMR and GPC.

引用

页码：1634 / 1639

页数：6

共 73 条

[1] Recent developments in ring opening polymerization of lactones for biomedical applications [J].