An efficient rhodium(I) initiator for stereospecific living polymerization of phenylacetylenes

被引：109

作者：

Kishimoto, Y ^{[1
]}

Miyatake, T ^{[1
]}

Ikariya, T ^{[1
]}

Noyori, R ^{[1
]}

机构：

[1] RES DEV CORP JAPAN,ERATO MOLEC CATALYSIS PROJECT,TOYOTA 47003,JAPAN

来源：

MACROMOLECULES | 1996年 / 29卷 / 14期

关键词：

D O I：

10.1021/ma960180q

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

A new rhodium (I) initiator system for stereospecific living polymerization of phenylacetylenes is reported that is easily prepared and displays a much higher reaction rate and initiation efficiency. The reaction with the new Rh initiator proceeding homogeneously in THF is 3-4 times faster than with Rh(C≡CC6H5) (2,5-norbornadiene)-CP(C6H5)3]2 (1). The number-average molecular weight (Mn) of the products obtained with 100% conversion of the monomer increased proportionally from the initial phenylacetylene/Rh feed ratio up to 3.5 × 104 with a 250:1 feed ratio, in which the initial concentration of phenylacetylene was kept constant. The polydispersity value of the polymer remained within the narrow range 1.11-1.15. The Mn values indicate that the initiation efficiency value of the initiating system is nearly doubled compared with the value obtained with (1).

引用

页码：5054 / 5055

页数：2

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