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Journal of Chemistry
Volume 2016, Article ID 5284259, 8 pages
http://dx.doi.org/10.1155/2016/5284259
Research Article

Simple One-Step Method to Synthesize Polypyrrole-Indigo Carmine-Silver Nanocomposite

1Programa de Pós-Graduação em Química, Instituto de Química, Universidade Federal do Rio Grande do Sul, 91501-970 Porto Alegre, RS, Brazil
2Laboratório de Materiais Aplicados e Interfaces, Instituto de Química, Universidade Federal do Rio Grande do Sul, 91501-970 Porto Alegre, RS, Brazil

Received 9 December 2015; Accepted 31 January 2016

Academic Editor: Frederic Dumur

Copyright © 2016 Lara Fernandes Loguercio et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

A nanocomposite of indigo carmine doped polypyrrole/silver nanoparticles was obtained by a one-step electrochemical process. The nanocomposite was characterized by scanning electron microscopy, infrared spectroscopy, ultraviolet-visible-near infrared spectroscopy, and cyclic voltammetry. The simple one-step process allowed the growth of silver nanoparticles during the polymerization of polypyrrole, resulting in films with electrochromic behavior and improved electroactivity. In addition, polypyrrole chains in the nanocomposite were found to present longer conjugation length than pristine polypyrrole films.