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New Aspects of Poly aniline Doping: A Study Based on Using Electrochemical Quartz Crystal Nanobalance.

Mirmohseni Abdolreza نويسنده , Oladegaragoze Ali نويسنده , Fotoohifar Farshad نويسنده

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Oxidative and non-oxidative dopings of polyaniline in various acidic media with different concentrations have been studied by electrochemical quartz crystal nanobalance technique. Polyaniline was synthesized electrochemically on the gold electrode of quartz crystal using a galvanostatic electropolymerization method (1 mA/cm^2). Electrochemically synthesized polyaniline film was exposed to different concentrations of various acidic solutions and the changes in the mass (frequency) of the polymer were recorded. Results showed that the extent and the rate of non-oxidative doping depend on the concentration and nature of dopant acid. The rate of doping in the case of a number of tested inorganic acids was as the order of: H3PO4