期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 53, 期 9, 页码 2402-2407出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201310045
关键词
chain growth; conjugated polymers; homogeneous catalysis; palladium; polycondensation
资金
- German Excellence Initiative via the Cluster of Excellence [EXC 1056]
- DFG [SPP 1355, KI-1094/4]
Chain-growth catalyst-transfer polycondensations of AB-type monomers is a new and rapidly developing tool for the preparation of well-defined pi-conjugated (semiconducting) polymers for various optoelectronic applications. Herein, we report the Pd/PtBu3-catalyzed Negishi chain-growth polycondensation of AB-type monomers, which proceeds with unprecedented TONs of above 100 000 and TOFs of up to 280 s(-1). In contrast, related AA/BB-type step-growth polycondensation proceeds with two orders of magnitude lower TONs and TOFs. A similar trend was observed in Suzuki-type polycondensation. The key impact of the intramolecular (vs. intermolecular) catalyst-transfer process on both polymerization kinetics and catalyst lifetime has been revealed.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据