Abstract

ABSTRACT In the present work the obtention of poly- o -aminophenol (POAP) at high potentials on conducting glass (SnO 2 : F) is reported . The synthesis was carried out by continuous potential cycling in a 1×10 –3 M o-aminophenol (OAP), 0.1 M hydrochloric acid, and 0.1 M potassium chloride solution between -0.2 and 1.5 V at 0.05 V·s -1 vs Ag│AgCl. The polymer growth was followed by cyclic voltammetry, UV-vis spectra, and AFM characterization. The SnO 2 : F modified electrode (SnO 2 : F/POAP) was tested in the electro-oxidation of ascorbic acid (AA) in phosphate buffer solution. This coating showed an important electrocatalytic effect because a negative anodic shift of 0.4 V with respect to a bare SnO 2 : F glass electrode was observed.Keywords: Fluor-doped Tin oxide, o -aminophenol, Electropolymerization, Ascorbic acid, Electrocatalysis, Modified electrode. e-mail address: jarmijom@puc.cl INTRODUCTION Although polymeric materials have been deposited onto substrates using a variety of approaches,

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