Cross-linking in polypyrrole and poly (N-methylpyrrole):: Comparative experimental and theoretical studies

被引：30

作者：

Aleman, Carlos ^{[1
]}

Casanovas, Jordi ^{[2
]}

Torras, Joan ^{[3
]}

Bertran, Oscar ^{[3
]}

Armelin, Elaine ^{[1
]}

Oliver, Ramon ^{[4
]}

Estrany, Francesc ^{[4
]}

机构：

[1] Univ Politecn Cataluna, Dept Engn Quim, ETS Engn Ind, E-08028 Barcelona, Spain

[2] Univ Lleida, Dept Quim, Escola Politecn Super, Lleida 25001, Spain

[3] Univ Politecn Cataluna, Dept Engn Quim, EUETII, Igualada 08700, Spain

[4] Univ Politecn Cataluna, Unitat Quim Ind, Escola Univ Engn Tecn Ind Barcelona, Barcelona 08036, Spain

来源：

POLYMER | 2008年 / 49卷 / 04期

关键词：

conducting polymer; cross-linking; polypyrrole;

D O I：

10.1016/j.polymer.2007.12.039

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 comparative study about cross-linking in electrogenerated polypyrrole and poly(N-methylpyrrole) is presented. Experimental studies on polymer films prepared under a constant potential of 1.4 V but considering different polymerization times as well as quantum mechanical calculations on model oligomers indicated that cross-linking is very low in polypyrrole, while cross-links are frequently formed by poly(N-methylpyrrole) chains. These behaviors have been attributed to the architecture of [he molecular chains, which is completely different for the two systems under study. Thus, polypyrrole forms linear chains with some irregularities in the inter-ring linkages, while branched molecules with many irregularities are the most stable for poly(N-methylpyrrole). These remarkable differences are fundamentally due to the steric repulsions induced by the methyl groups of poly(N-methylpyrrole). (C) 2008 Elsevier Ltd. All rights reserved.

引用

页码：1066 / 1075

页数：10

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