Artículos de revistas
Nanocompósitos eletroativos de poli-o-metoxianilina e polissacarídeos naturais
Fecha
2007-10-01Registro en:
Química Nova. Sociedade Brasileira de Química, v. 30, n. 5, p. 1158-1162, 2007.
0100-4042
10.1590/S0100-40422007000500020
S0100-40422007000500020
S0100-40422007000500020.pdf
Autor
Universidade Federal do Piauí (UFPI)
Universidade de São Paulo (USP)
Universidade Estadual Paulista (Unesp)
Institución
Resumen
In this work we take advantage of the polyelectrolyte character of some Brazilian native gums to fabricate electrically conductive, nanostructured films. The gums Sterculia urens, (caraia), Sterculia striata (chicha) or Anadenanthera macrocarpa Benth were assembled in conjunction with poly(o-methoxyaniline) (POMA) in the form of layered nanostructured films using the layer-by-layer (LbL) technique. All the LbL films displayed a well-defined electroactivity, as confirmed via cyclic voltammetry. In comparison to POMA LbL films fabricated with conventional polyelectrolytes (viz. poly(vinyl sulfonic acid)-PVS), the presence of the gums in the LbL films increased remarkably the electrochemical stability of the films.