Electroactive nanocomposites made of poly (o-methoxyaniline) and natural polysaccharides

Química Nova

Oliveira Jr, Osvaldo N.¹  Universidade de São Paulo, São Carlos, Brasil¹  Universidade Estadual Paulista, Presidente Prudente, Brasil¹  Universidade Federal do Piauí, Teresina, Brasil¹  Kitagawa, Igor L.¹  Eiras, Carla¹  Cunha, Helder Nunes da¹  Passos, Ionara Nayana Gomes¹  Brito, Ana Cristina Facundo de¹  Constantino, Carlos J. L.¹  Santos Júnior, José Ribeiro dos¹  Zucolotto, Valtencir¹ 

关键词: natural gums;    poly-o-methoxyaniline;    layer-by-layer films.;   

DOI  :  10.1590/S0100-40422007000500020

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 摘 要 】

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.

【 授权许可】

Unknown