Conductive organic polymers: An electrochemical route for the polymerization of dapsone

Autor(es)

Moura, Silio Lima ; dos Santos Junior, Jose Ribeiro ; Correto Machado, Francisco Bolivar ; Kawachi, Elizabete Yoshie ; de Araujo Ferrao, Luiz Fernando

• Tipo de documento: Artigo Científico
• Fonte: JOURNAL OF ELECTROANALYTICAL CHEMISTRY; v. 757, p. 5-pg., 2015-11-15.

Resumo

The electropolymerization of dapsone by anodic oxidation is reported for the first time. The conditions in which a non-conducting oligomeric film or a conductive polymeric film of dapsone is formed are also discussed, based on the scan rate and potential window applied. The cyclic voltammetry of dapsone-polymer presented redox activities that have not been shown before, to the authors' knowledge, demonstrating its high electronic conductivity. The electrochemical impedance response of the dapsone-polymer indicates that their admittance is similar to pure and sulfonated polyanilines, while for the dapsone-oligomers is characteristic of insulating materials. Infrared spectroscopy of both oligomers and polymer supports that the polymerization occurs via amino-amino coupling, since no modifications in the aromatic ring is observed. (C) 2015 Elsevier B.V. All rights reserved. (AU)

• Processo FAPESP: 14/24155-6 - Estudo de estados eletrônicos em hidrocarbonetos aromáticos policíclicos e suas propriedades eletrônicas como modelos de estruturas de grafeno
• Beneficiário: Francisco Bolivar Correto Machado
• Modalidade de apoio: Auxílio à Pesquisa - Regular