ESTUDO DA ELETROPOLIMERIZAÇÃO POR VOLTAMETRIA CÍCLICA DO LAPACHOL EM SOLUÇÃO TAMPÃO FOSFATO pH 6,7

Abstract

The biological activity of Lapachol reaches a wide range, such as antimicrobial, antifungal, antineoplastic, antitumor, and antimalarial activities, among others, and with this, studies have been conducted with its compound focused on the formation of polymeric films. These polymeric films are formed through the oxidation of the monomer on the surface of the working electrode through the redox process that occurs in its voltammetry, which is known as the electropolymerization study. The chemically modified electrodes by electropolymerization present different potentialities from common electrodes, and furthermore present advantages such as low cost, fast and precise electrochemical response. But for the formation of these polymeric films, it is necessary to provide the best environment for their acquisition and stability, analyzing their reactions and characteristics of the monomer under study. Thus, the present work aimed to study the electropolymerization of Lapachol on glassy carbon electrodes. Parameters such as scanning speed, number of cycles, and ion exchange behavior were analyzed. Where it can be observed the formation of the polymeric film with the monomer, in such a way that, in the study of cycles it was pointed out the increase of the current and, a little, of the potential of the redox pair of the monomer.