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Processing-induced chromism in thin films of polythiophene derivatives

✍ Scribed by Mario Leclerc; Isabelle Lévesque; Leonid Goldenberg; M. C. Petty

Publisher
John Wiley and Sons
Year
1997
Tongue
English
Weight
246 KB
Volume
18
Category
Article
ISSN
1022-1336

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✦ Synopsis

Abstract

Langmuir‐Blodgett films of amphiphilic poly[3‐oligo(oxyethylene)‐4‐methylthiophene] have been obtained. The resulting thin films are poorly conjugated, with a maximum of absorption at 405 nm which remains almost constant upon heating or cooling. In contrast, cast thin films of this polymer exhibit a maximum of absorption at 550 nm and show interesting thermochromic effects. These results to indicate that the method of preparation of thin films can have a significant influence on the conformational structure of the polymer at room temperature and, consequently, on its thermochromic behaviour.

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