Electrical transport and optical properties of the composite of polyaniline nanorod with gold

摘要

Here, we report the synthesis of composite of polyaniline nanorod with gold by chemical oxidative method. Morphological, structural, optical and electrical transport properties of the samples are characterized by scanning electron microscope with energy dispersive spectroscopy, x-ray diffractometer, fourier transform infra red spectrometer, optical absorption spectroscopy, and low temperature electrical transport measurement. A surface plasmon absorption band is obtained from optical absorption spectrum at 520 nm and it indicates the presence of gold in polyaniline matrix. Experimental data of optical absorption fits well with Maxwell Garnet model. Tunneling and one dimensional VRH Charge transport mechanisms are followed by the samples. Positive magnetoconductivity is obtained and it can be explained with forward interference model.