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Structural and electrochromic study of polypyrrole synthesized with azo and anthraquinone dyes

2006; Elsevier BV; Volume: 591; Issue: 1 Linguagem: Inglês

10.1016/j.jelechem.2006.03.016

1873-2569

Jacqueline Ferreira, Jacqueline Santos, Roberto de Matos, Odair P. Ferreira, Adley F. Rubira, Emerson M. Girotto,

Advanced Sensor and Energy Harvesting Materials

The electrochromic properties of polypyrrole (PPy) synthesized with two different dyes, Remazol Black B (RB) and Dianix Red (DR), have been investigated concerning the influence of dye molecules on polymer structure ordering and electrochromic characteristics. The polymers have been electrochemically prepared. Structural characterization by X-ray diffraction (XRD) and Raman spectroscopy has shown the improvement of PPy chain ordering by dye molecules, which provides an easy mass transport at the interface, a better electronic charge transfer in the bulk, and resulting better electrochromic properties.