Nanocompósitos eletroativos de poli-o-metoxianilina e polissacarídeos naturais

Química Nova

Carla Eiras²  Ionara Nayana Gomes Passos²  Ana Cristina Facundo De Brito²  José Ribeiro Dos Santos Júnior²  Valtencir Zucolotto¹  Osvaldo N. Oliveira Jr¹  Igor L. Kitagawa¹  Carlos J. L. Constantino¹  Helder Nunes Da Cunha¹ 

[1] ,Universidade Federal do Piauí Centro de Ciências Naturais Departamento de QuímicaTeresina PI ,Brasil

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

DOI  :  10.1590/S0100-40422007000500020

来源: SciELO

【 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】

CC BY-NC   
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