Experimental evidence for the quasi-"living" nature of the grignard metathesis method for the synthesis of regioregular poly(3-alkylthiophenes)

被引：523

作者：

Iovu, MC ^{[1
]}

Sheina, EE ^{[1
]}

Gil, RR ^{[1
]}

McCullough, RD ^{[1
]}

机构：

[1] Carnegie Mellon Univ, Dept Chem, Pittsburgh, PA 15213 USA

来源：

MACROMOLECULES | 2005年 / 38卷 / 21期

关键词：

D O I：

10.1021/ma051122k

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The Grignard metathesis (GRIM) polymerization of 3-alkylthiophenes proceeds by a quasi"living" chain growth mechanism, not by a step growth process. Kinetic studies of the Grignard metathesis polymerization of 2,5-dibromo-3-alkylthiophenes showed that the molecular weight of poly(3-alkylthiophenes) is a function of the molar ratio of the monomer to nickel initiator, and conducting polymers with predetermined molecular weights and relatively narrow molecular weight distributions (PDIs = 1.2-1.5) can be made. Sequential monomer addition resulted in new block copolymers containing different poly(3-alkylthiophene) segments.

引用

页码：8649 / 8656

页数：8

共 38 条

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