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

Quimica nova

Kitagawa, Igor L.¹  Constantino, Carlos J. L.¹  Eiras, Carla²  Passos, Ionara Nayana Gomes²  Cunha, Helder Nunes da²  Brito, Ana Cristina Facundo de²  Santos Júnior, José Ribeiro dos²  Oliveira Jr, Osvaldo N.³  Zucolotto, Valtencir³ 

[1] Universidade Estadual Paulista, Presidente Prudente, Brasil;Universidade Federal do Piauí, Teresina, Brasil;Universidade de São Paulo, São Carlos, Brasil

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 polyelectrolytecharacter of some Brazilian native gums to fabricate electrically conductive,nanostructured films. The gums Sterculia urens, (caraia), Sterculiastriata (chicha) or Anadenanthera macrocarpa Benth were assembledin conjunction with poly(o-methoxyaniline) (POMA) in the form of layerednanostructured films using the layer-by-layer (LbL) technique. All the LbL filmsdisplayed 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 filmsincreased remarkably the electrochemical stability of the films.

【 授权许可】

CC BY