Preparation of a novel conducting polymer by electropolymerization of thiophenylidine 8-naphthylamine Schiff-base

The Schiff-base resulting from the reaction of 3-thiophene carboxaldehyde w ith 1,8-diaminonaphthalene was isolated and characterized. The electropolym erization of Schiff-base was carried out in acetonitrile containing tetrabu tyl ammonium tetrafluoroborate. The film coated electrode showed an electro chemical response. The stability of the redox response towards repetitive c yclic voltammetry was studied. The effect of number of sweep, scan rates an d potential cyclic limits on the redox peaks of the obtained modified elect rodes were investigated and explained. The resulting modified electrode beh aves as an electrocatalyst for the electrode reaction of hydroquinone. The modified electrode is chemically and electrochemically stable both in aqueo us solution and mixtures containing methanol, making it excellent candidate for sensing and/or electrocatalytic applications. (C) 2000 Elsevier Scienc e Ltd. All rights reserved.