Programmable Modulation of Co-monomer Relative Reactivities for Living Coordination Polymerization through Reversible Chain Transfer between "Tight" and "Loose" Ion Pairs

被引：56

作者：

Wei, Jia ^{[1
]}

Zhang, Wei ^{[1
]}

Wickham, Rennisha ^{[1
]}

Sita, Lawrence R. ^{[1
]}

机构：

[1] Univ Maryland, Dept Chem & Biochem, College Pk, MD 20742 USA

来源：

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2010年 / 49卷 / 48期

基金：

美国国家科学基金会;

关键词：

ion pairs; living coordination polymerization; polyolefins; reversible chain transfer; transition metals; ZIEGLER-NATTA POLYMERIZATION; OLEFIN BLOCK-COPOLYMERS; ALPHA-OLEFINS; CHROMIUM(III) CATALYST; PROPENE POLYMERIZATION; ZIRCONOCENE CATALYSTS; NARROW POLYDISPERSITY; SYNTHETIC-POLYMERS; HIGHLY EFFICIENT; LIGAND STRUCTURE;

D O I：

10.1002/anie.201004709

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Not leaving anything to chance: Rapid and reversible exchange between "tight" and "loose" ion pairs was used to modulate the relative reactivities of ethene and 1-hexene or cyclopentene in a programmed fashion for living coordination chain-transfer polymerization. Thus, different grades of a monodisperse polyolefin copolymer, such as the poly(ethene-co-1- hexene) samples shown, could be obtained with a single cationic transition-metal catalyst. Copyright © 2010 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

引用

页码：9140 / 9144

页数：5