Poly(1

5-diaminonaphthalene)(1

5-DAN)films were prepared by cyclic voltammetry on an indium tin oxide(ITO)plate working electrode in acetonitrile and acid aqueous solutions

respectively

and were characterized with FT—IR．The electroactivity of polymer films was examined by changing the polymeric solvents

film thickness and doping acid．A highly electroactive polymer film was obtained in acid aqueous solutions．With increasing the potential scan rate

however

the loss of amount of charge is more in an acid oqueous solution than that in acetonitrile．The results showed that the film thickness did not increase linearly with increasing the amount of charge used during polymerization．The UV-Vis spectra were collected while petentiostatic technique was performed under various applied voltage．and the electronic band gap was testified from the onset of the π-π* transition of the neutral pelymer．