الفهرس 
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Abstract
This work has been can·ied out to investigate the electrochemical relaxation studies of some
copolymers thiophene derivatives starting from the monomers: Thiophene, 2,2’-Bithiophene,
3-Methylthiophene and 3- bromothiophene. Electrocopolymerization of the mixed monomers was carried
out usmg galvanostatic and potentiodynamic techniques in acetonitrile and nitrobenzene as
solvents and TBAPFr, as suppmiing electrolyte. The prepared films were subjected to relaxation
studies using eye!ic voltammetric technique. The effect of solvent, monomer concentration,
electrocopolymerization techniques and temperature on the relaxation effect was investigated.