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Sequential Electrochemical Polymerization of Aniline and Their Derivatives Showing Electrochemical Activity at Neutral pH |
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| Authors: | Jorge Yánez‐Heras Gabriel A. Planes Federico Williams César A. Barbero Fernando Battaglini |
| Affiliation: | 1. INQUIMAE – Departamento de Química Inorgánica, Analítica y Química Física, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, Pabellón 2, C1428EHA Buenos Aires, Argentina phone: 54‐11‐45763358, fax : 54‐11‐45763341;2. Departamento de Química, Universidad Nacional de Río Cuarto, Ruta Nac. 36 – Km. 601 – X5804BYA, Río Cuarto, Argentina |
| Abstract: | Sequential electropolymerization of aniline followed by an aniline derivative bearing an ion moiety is presented. The studied derivatives contain sulfonic, carboxylate or amino groups. Its electrochemical behavior at acid and neutral pH is studied by cyclic voltammetry combined with quartz crystal microbalance or probe beam deflection in order to assess the mass transfer process involved in these new modified electrodes. All of them show a stable and quasi‐reversible electrochemical behavior at neutral pH that can be attributed to a self‐doping process. These new modified electrodes can be further modified due to the presence of functional groups. |
| Keywords: | Polyaniline Aniline derivatives Electroactivity Neutral pH Mass transfer |