CETMIC   05378
CENTRO DE TECNOLOGIA DE RECURSOS MINERALES Y CERAMICA
Unidad Ejecutora - UE
artículos
Título:
Electrosynthesis and spectroscopic characterization of poly(o-aminophenol) film electrodes
Autor/es:
TUCCERI, RICARDO I.; ARNAL P.M; SCIAN ALBERTO N.
Revista:
ISRN Polymer Science
Editorial:
ISRN (a division of Hindawi Publishing Corporation)
Referencias:
Lugar: El Cairo; Año: 2012 p. 1 - 59
ISSN:
2090-8733
Resumen:
This review, which is divided into three parts, concerns electrochemical synthesis, spectroscopic characterization and formation mechanisms of poly(o-aminophenol) (POAP) film electrodes. The first part of this review is devoted to describe the electropolymerization process of o-aminophenol on different electrode materials and in different electrolyte media by employing both potentiodynamic and potentiostatic methods. The evolution of the voltammogram during the electrosynthesis of POAP and the assignation of the voltammetric peaks to different species, according to the formation mechanism formulated by each author, are described. The effects of some chemical substances and electrochemical pretreatments of the electrode surface, on the electropolymerization process of o-aminophenol are also considered in this part of the review. The synthesis of POAP in neutral media, which yields a nonconducting polymer, and its use as component of biosensors and protective layer in corrosion processes, are analyzed at the end of this first part. The second part of this review refers to spectroscopic studies carried out by different authors to both, identify the products of the o-aminophenol electrooxidation and elucidate the chemical structure of poly(o-aminophenol) film electrodes. This second part of the review also describe the different spectroscopic methods employed to study the redox process of POAP, which allowed to demonstrate existence of transient species during the transition of the completely oxidized form of POAP to the completely reduced one. The third part of this review shows the different mechanisms formulated to interpret the POAP films formation from both acid and basic solutions of o-AP. Also, some electrochemical and spectroscopic data which allowed to propos the corresponding formation mechanisms, especially in basic media, are described.