polythiophene

Polythiophene is chemically synthesized and doped with FeCl3 for 2.5, 5 and 10 h. For structural investigation all samples have been characterized using different techniques. The results of elemental analysis show that with the increase of doping duration the Fe content increases while the S content decreases. FTIR spectrum reveals the complex formation between FeCl3 and polythiophene. UV-Visible results have been used to calculate band gap energy.

Electrosynthesis of selenophene-thiophene copolymers was successfully realized at con¬stant electrode potential in a binary solvent system consisting of boron trifluoride-ethyl ether and an additional amount of ethyl ether (mole ratio 1:2). The homo- and copolymer films obtained were studied and characterized with cyclic voltammetry and FTIR spectroscopy. The influence of the applied polymerization potential and the monomer feed ratio of selenophene and thiophene on the copolymer materials was investigated.