Styrene polymerization catalyzed by metal porphyrin complex/MAO for in situ synthesizing polystyrene containing air stable π cation radicals

被引：13

作者：

Li, Jianzhong ^{[1
,2
]}

Li, Mim ^{[2
]}

Li, Shiyun ^{[1
]}

Shi, Liya ^{[1
]}

Ren, Changyi ^{[1
]}

Cui, Dongmei ^{[1
]}

Wang, Yanhui ^{[1
]}

Tang, Tao ^{[1
]}

机构：

[1] Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China

[2] Jilin Univ, Dept Mat Sci & Engn, Changchun 130012, Peoples R China

来源：

JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY | 2008年 / 46卷 / 04期

关键词：

cation radicals; coordination mechanism; organometallic catalysts; polystyrene; porphyrin; synthesis;

D O I：

10.1002/pola.22465

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 novel catalyst system based on nickel(II) tetraphenylporphyrin (Ni(II)TPP) and methylaluminoxane for styrene polymerization was developed. This catalyst system has a high thermal stability and show fairly good activity. The obtained polystyrene (PS) was isotactic-rich atactic polymer by C-13 NMR analysis, and its molecular weight distribution was rather narrow (M-w/M-n approximate to 1.6, by GPC analysis). ESR revealed that Ni(II)TPP pi cation radicals were formed in the polymerization and could remain in the resulting PS stably. The mechanism of the polymerization was discussed and a special coordination mechanism was proposed. The PS product containing Ni(II)TPP pi cation radicals can be used as a potential functional material. (C) 2008 Wiley Periodicals, Inc.

引用

页码：1240 / 1248

页数：9

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