Spectroscopic and thermal characterization in poly(p-phenylene vinylene)/sol–gel silica sample

Abstract The absorption and luminescence spectra for the poly( p -phenylene vinylene)/sol–gel silica with different thermal treatments were measured. A considerable increase in the luminescence was observed for the polymer introduced into SiO 2 matrix with thermal treatment at 120 °C. The thermal diffusivity of these samples was measured using the thermal lens technique, and the obtained value 3.3 × 10 −5 cm 2 /s (sample treated at 37 °C) is practically independent of the thermal treatment (37–150 °C).