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Electrochemical detection of ascorbic acid and dopamine using poly-(3,4-ethylenedioxythiophene)/Prussian blue films on platinum

Domenii publicaţii > Chimie + Tipuri publicaţii > Articol în revistã ştiinţificã

Autori: Stelian Lupu

Editorial: Revue Roumaine de Chimie, 50 (3), p.213-217, 2005.

Rezumat:

The electrochemical behaviour and analytical applications of bilayer films consisting of poly-[3,4-ethylenedioxythiophene] (PEDOT), and subsequently of iron (III)hexacyanoferrate, well known as Prussian Blue (PB), on a platinum electrode, are reported. The electrocatalytic activity of the PEDOT conducting polymer/Prussian Blue bilayer system towards the oxidation of ascorbic acid and dopamine is examined in aqueous solutions. From differential pulse voltammograms a linear response to ascorbic acid and dopamine was observed in the concentration range from 5 × 10 E-5 to 5.0 × 10 E-3 M and 1 × 10 E-4 to 2 × 10 E-3 M, respectively.

Cuvinte cheie: Modified electrodes, Bilayer films, Prussian blue, Conducting polymer, Voltammetric sensor, Ascorbic acid, Dopamine