Living polymerization of phenylacetylenes catalyzed by cationic rhodium complexes bearing tetrafluorobenzobarrelene

被引：0
|
作者：
Masashi Shiotsuki
Naoya Onishi
Fumio Sanda
Toshio Masuda
机构：
[1] Graduate School of Engineering,Department of Polymer Chemistry
[2] Kyoto University,Department of Environmental and Biological Chemistry
[3] Katsura Campus,undefined
[4] Nishikyo-ku,undefined
[5] Faculty of Engineering,undefined
[6] Fukui University of Technology,undefined
来源：
Polymer Journal | 2011年 / 43卷
关键词：
π-acidic diene ligand; living polymerization; substituted polyacetylene; transition metal catalyst;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Binary catalysts composed of cationic rhodium complexes, [(tfb)Rh(L)2]X (tfb: tetrafluorobenzobarrelene, L: phosphine ligand, X: counter anion), and iPrNH2 induced living polymerization of phenylacetylene and its ring-substituted derivatives. For instance, [(tfb)Rh(PPh3)2]BPh4 in conjunction with iPrNH2 polymerized phenylacetylene in a living manner to yield poly(phenylacetylene) with narrow molecular weight distribution (Mw/Mn 1.09) quantitatively. The living nature was confirmed by kinetic plots of the polymerization. Nuclear magnetic resonance studies revealed that iPrNH2 serves to dissociate the coordinating PPh3 ligand of [(tfb)Rh(L)2]X to form an initiating species. Block copolymers were synthesized by the sequential polymerization of different phenylacetylenes using the present catalyst.
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页码：51 / 57
页数：6
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