Collect. Czech. Chem. Commun.
2011, 76, 1855-1877
https://doi.org/10.1135/cccc2011075
Published online 2012-01-23 12:29:05
Electrochemical preparation of poly(vinylferrocenium)perchlorate-polyaniline composite-modified platinium electrode in methylene chloride
Muammer Kavanoza, Mine Şenb and Nuran Özçiçek Pekmezc,*
a Rize University, Faculty of Science and Arts, Department of Chemistry, 53100 Rize, Turkey
b Sinop University, Department of Chemistry, 57000 Sinop, Turkey
c Hacettepe University, Department of Chemistry, 06800 Beytepe, Ankara, Turkey
Abstract
A new surface based on poly(vinylferrocenium)perchlorate-polyaniline (PVF+ClO4–-PANI) composite-modified platinum electrode was prepared electrochemically to combine the electrocatalytic properties of an intrinsically conducting polymer and a redox polymer. The composite film was synthesized as a bilayer from individual polymerization solutions. Furthermore, PVF+ClO4– and PANI polymers were simultaneously deposited as a mixture from a methylene chloride solution containing PVF polymer and aniline monomer on Pt electrode. When PVF+ClO4– and PANI were codeposited by cycling the potential between 0.20 and 1.80 V vs Ag|AgCl, these polymers were encapsulated within each other. The encapsulation of PVF+ClO4– inside the growing PANI polymer provided the retainment of PVF+ClO4– on the electrode surface even if it was in dedoped form (PVF). This composite film was characterized by cyclic voltammetry, FTIR, SEM and conductivity measurements. The response of the composite film to catechol and hydroquinone was investigated by chronocoulometry in aqueous medium. It was found that the increase in charge consumption for catechol and hydroquinone was observed up to 7.5 and 5.0 times, respectively, when compared to that of PANI film. This might be due to the presence of PVF+ClO4– in the composite film, which played an important role in accelerating the electron transfer.
Keywords: Conducting materials; Cyclic voltammetry; Electrochemistry; Electropolymerization; Coating; Composite; Conducting polymer; Polyaniline; Poly(vinylferrocene).
References: 38 live references.
