Otro
Nanocompósitos eletroativos de poli-o-metoxianilina e polissacarídeos naturais
Registro 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
Eiras, Carla
Passos, Ionara Nayana Gomes
Brito, Ana Cristina Facundo de
Santos Júnior, José Ribeiro dos
Zucolotto, Valtencir
Oliveira Jr, Osvaldo N.
Kitagawa, Igor L.
Constantino, Carlos J. L.
Cunha, Helder Nunes da
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. Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)