Nanocompósitos eletroativos de poli-o-metoxianilina e polissacarídeos naturais

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. [UNESP]; Constantino, Carlos J. L. [UNESP]; Cunha, Helder Nunes da

Nanocompósitos eletroativos de poli-o-metoxianilina e polissacarídeos naturais

Arquivos

S0100-40422007000500020.pdf (1.06 MB)

Data

2007-10-01

Autores

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

Editor

Sociedade Brasileira de Química

Tipo

Artigo

Direito de acesso

Acesso aberto

Resumo

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.