1. Electropolymerization of 3-aminophenol on carbon graphite surface: Electric and morphologic properties
- Author
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João M. Madurro, Diego Leoni Franco, Ana G. Brito-Madurro, Rafael A. Gonçalves, Sabrina Nunes Vieira, Lucas Franco Ferreira, and André S. Afonso
- Subjects
chemistry.chemical_classification ,Materials science ,Scanning electron microscope ,Analytical chemistry ,Polymer ,Condensed Matter Physics ,Electron transfer ,chemistry.chemical_compound ,chemistry ,Polymerization ,Chemical engineering ,General Materials Science ,Graphite ,Ferricyanide ,Cyclic voltammetry ,Ferrocyanide - Abstract
This paper reports the formation of electropolymerized films derived from 3-aminophenol on graphite electrode by cyclic voltammetry, prepared in different pH conditions. With increase of pH values, a shift of the oxidation potential of 3-aminophenol to more cathodic potentials was observed. 3-Aminophenol electrooxidation, in acid and basic media, yielded polymeric films onto graphite surface. In ferrocyanide/ferricyanide solution, the polymer produced in acid medium showed higher electron transfer efficiency. Scanning electron microscopy (SEM), atomic force microscopy (AFM), and FT-IR were used to investigate some properties of the graphite electrode modified with poly(3-aminophenol). Scanning electron microscopy showed that the morphology of the films is strongly dependent on the pH of the electropolymerization medium. FT-IR spectra of polymer films produced for either acid or basic media suggest that the monomer is polymerized by NH 2 group.
- Published
- 2008
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