Chirality in poly(phenylene-alt-bithiophene)s:: A comprehensive study of their behavior in film and nonsolvents

被引：12

作者：

Koeckelberghs, Guy ^{[1
]}

Vangheluwe, Marnix ^{[1
]}

Persoons, Andre ^{[1
]}

Verbiest, Thierry ^{[1
]}

机构：

[1] Katholieke Univ Leuven, Lab Mol Elect & Photon, B-3001 Heverlee, Belgium

来源：

MACROMOLECULES | 2007年 / 40卷 / 23期

关键词：

D O I：

10.1021/ma071559n

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

New chiral, alternating copolymers of 2,5-dialkoxybenzenes and 3,3'-dialkoxy-2,2'-bithiophenes were prepared and their (chir)optical properties were studied. The polymers were prepared by a Stille coupling reaction and show high conjugation lengths in both solution and films. Fluorescence and UV-vis spectroscopy indicate that the polymers are present as rigid, highly conjugated polymer strands in solution. In a nonsolvent mixture, the polymers aggregate and, if chiral substituents are employed, supramolecular chirality is observed. In annealed films, very large Cotton effects are observed.

引用

页码：8142 / 8150

页数：9

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