Syntheses and characterisation of electrically conductive and fluorescent poly[3-(omega-bromoalkyl)thiophenes]

A novel series of functionalized polythiophenes incorporating 3-(omega-brom oalkyl) pendants were synthesized by chemical oxidative polymerization usin g FeCl3 and characterized using FT-IR, W-Vis absorption spectroscopy, fluor escence emission spectroscopy, conductivity measurements and thermal analys es. These polymers attained a maximum electrical conductivity between 4.7 a nd 8.4 S cm(-1) upon doping with iodine and have a fluorescence quantum yie ld of up to 11.1% with respect to quinine sulfate. The influence of the ter minal omega-bromine substituent as of the length of the alkyl pendant on el ectrical conductivity, spectral behavior and thermal stability is discussed . (C) 1999 Elsevier Science S.A. All rights reserved.