Spectroscopic and Electrical Studies of Conducting Polyaniline Composites Embedded Nanostructure Zinc Sulfide

Abstract

Simple and low-cost chemical precipitation method was used for the synthesis of ZnS nanoparticles using zinc precursor and DMF as a stabilizing agent. Na₂S was used as the source of sulphur ions. Composites of polyaniline and ZnS nanoparticles have been synthesized by in-situ chemical oxidation method by varying weight percentage of synthesized ZnS nanoparticles with aniline monomer. Optical studies in terms of UV-Vis and fluorescence show the positive effect of incorporation of ZnS in the polyaniline matrix. Higher intensity emission bands are observed in composites as compared to pure polyaniline. Measurement of DC conductivity shows enhanced conductivity for 5% and 10% composites as compared to pure PANI and other nanocomposites.

Keywords: ZnS nanoparticles, nanocomposites, polyaniline, optical study, electrical conductivity