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

Citation:

Tanami G, Gutkin V, Mandler D. Thin nanocomposite films of polyaniline/Au nanoparticles by the Langmuir-Blodgett technique. LangmuirLangmuir : the ACS journal of surfaces and colloids. 2010;26 (6) :4239 - 45.

Date Published:

2010///

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)]

Notes:

MEDLINE AN 2010168582(Journal; Article; (JOURNAL ARTICLE))