Thin nanocomposite films of polyaniline/Au nanoparticles by the Langmuir-Blodgett technique

Citation:

Golan Tanami, Gutkin, Vitaly , and Mandler, Daniel . 2010. “Thin Nanocomposite Films Of Polyaniline/Au Nanoparticles By The Langmuir-Blodgett Technique”. Langmuirlangmuir : The Acs Journal Of Surfaces And Colloids, 26, Pp. 4239 - 45.

Abstract:

The Langmuir-Blodgett (LB) method was used to deposit multilayers of polyaniline (PANI)- and mercaptoethanesulfonate (MES)-stabilized Au nanoparticles. The electrostatic interaction between the negatively charged nanoparticles in the subphase and the positively charged PANI at the air-water interface assisted the deposition of the nanocomposite film onto a solid support. These PANI/Au-NPs films were characterized using cyclic voltammetry, copper under potential deposition, scanning electron microscopy, atomic force microscopy, and X-ray photoelectron spectroscopy. We found that the nanocomposite layers were uniform and reproducible. The density of Au-NPs in the monolayer depended on the acidity of the subphase as well as on the nanoparticles concentration. Moreover, the Au-NPs extrude above the PANI and therefore could be used as nanoelectrodes for the underpotential deposition (UPD) of copper.[on SciFinder (R)]