Thermochromism, Photochromism and Anomalous Temperature Dependence of Luminescence in Poly(3-Alkylthiophene) Film

Abstract

Thermochromism and anomalous temperature dependence of emission spectra have been observed in poly(3-alkylthiophene) films, and are explained in terms of the transition of poly(3-alkylthiophene) conformation. The spectral change by laser irradiation and its memory have also been confirmed. The application of this phenomenon as an optical active element is proposed.