Electropolymerization of 2-Methoxy aniline. Electrochemical and Spectroscopical Product Characterization

FA VIVA; ANDRADE, ESTELA; F. V. MOLINA; FLORIT, MARÍA

JOURNAL OF ELECTROANALYTICAL CHEMISTRY

Elsevier

Lugar: Amsterdam; Año: 1999 vol. 471 p. 180 - 189

0022-0728

Poly(2-methoxyaniline) (PMOA) was electrosynthesized with varying monomer concentrations in 1 M HClO4. The polymers obtained were characterized using cyclic voltammetry, Fourier transform IR diffuse reflectance spectroscopy (FTIR-DRS), UV-visible spectroscopy and electrochemical impedance. At relatively high monomer concentrations (>20 mM), the polymer obtained is similar to aryl amine conducting polymers, but showing in its voltammogram an intermediate peak, which is more important as the monomer concentration decreases. For monomer concentrations below ~ 20 mM, the polymer becomes more resistive, behaving similarly to aryl amine redox polymers. The different techniques employed show results consistent with the voltammetric experiments. This change of behaviour indicates that different polymers are obtained as the monomer concentration is modified.