INIFTA 05425
INSTITUTO DE INVESTIGACIONES FISICO-QUIMICAS TEORICAS Y APLICADAS
Unidad Ejecutora - UE
artículos
Título:
Current Rectification by Mediating Electroactive Polymers
Autor/es:
GABRIEL O. YBARRA; CARLOS MOINA; M. INÉS FLORIT; DIONISIO POSADAS
Revista:
ELECTROCHIMICA ACTA
Editorial:
Pergamon Elsevier
Referencias:
Año: 2007 p. 1 - 5
ISSN:
0013-4686
Resumen:
Abstract: In this work we briefly review the theoretical basis for the electrochemical rectification in mediated redox reactions at redox polymer modified electrodes. Electrochemical rectification may have two distinct origins. It is either caused by a slow kinetics of the reaction between the external redox couple and the mediator or by a slow electronic transport within the film under an unfavorable thermodynamic condition (large equilibrium constant). We show experimental results for the redox mediation reaction of poly(o-aminophenol) (POAP) on the Fe2+/3+ and on the Fe(CN)64-/3- redox couples in solution that prove the proposed mechanisms of electrochemical rectification.
