Chemical synthesis and characterization of polyaniline Nanoparticle Doped with Lanthanum Chloride

Abstract

Lanthanum Chloride (LaCl3) has been employed as dopant to synthesize conductive polyaniline (PANI) using chemical method. The effect of LaCl3 on the electronic properties of polyaniline salt was studied for different concentrations of LaCl3 and ammonium per sulfate. The polyaniline samples were characterized by spectroscopic techniques such as UV-Vis and FTIR spectra. The results show that the optimum amount of Ammonium persulfate improved the degree of polymerization of aniline and enhanced the length of conjugation, which makes the energy for the in-plane C-H bending modes of quinoid ring lesser. The TEM image shows that the particles have a spherical shape of diameter 7-50 nm and the particle size increases or decreases by increasing the electrical conductivity of prepared sample were also studied.