Synthesis of electron-rich versus electron-poor poly {[1,4-phenylene]-[1-(n-alkylsulfinyl)ethylene]}s via the sulfinyl precursor route in different organic solvents

被引：18

作者：

Adriaensens, P ^{[1
]}

Van der Borght, M ^{[1
]}

Hontis, L ^{[1
]}

Issaris, A ^{[1
]}

van Breemen, A ^{[1
]}

de Kok, M ^{[1
]}

Vanderzande, D ^{[1
]}

Gelan, J ^{[1
]}

机构：

[1] Univ Limburg, Div Chem, Inst Mat Res, Lab Organ & Polymer Chem, B-3590 Diepenbeek, Belgium

来源：

POLYMER | 2000年 / 41卷 / 19期

关键词：

poly(phenylene vinylene)s; synthesis; polymerisation mechanism;

D O I：

10.1016/S0032-3861(00)00071-9

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

In this paper new insights in the mechanism of the sulfinyl precursor route towards poly(phenylene vinylene) (PPV) derivatives are presented by studying the polymerisation reaction in various solvents and by evaluating the influence of both electron donating and withdrawing substituents. A strong indication is presented that in alcohols the expulsion of the leaving group is involved in the rate determining step of the reaction, the formation of the p-quinodimethane intermediate, which further also depends on the type of solvent and substituents. Moreover, two polymerisation mechanisms can occur simultaneously: a radical mechanism that results in high molecular weight polymers and an anionic mechanism yielding low molecular weights. Competition between both mechanisms strongly depends on the solvent and type of substituents. (C) 2000 Elsevier Science Ltd. All rights reserved.

引用

页码：7003 / 7009

页数：7

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