Dielectric characteristics and conductivity of HCl-doped polyaniline through various synthesis approaches.

Abstract

The electrical conductivity of polyaniline (PANI) and its dielectric properties treated with HCl were examined using solvent-limited (SL), conventional fast (CF), and conventional slow (CS) methods. The impact of branching and cross-linking on the electronic structure and charge delocalization in PANI can be examined by analyzing its DC conductivity and dielectric permittivity. The results demonstrated that SL-PANI provides improved protection due to its reduced cross-linking and enhanced charge delocalization. The conductivity reaches its greatest at 55.2 S/cm for SL-PANI. Cross-linking and charge localization resulted in CS-PANI having the lowest conductivity (1.6 S/cm), despite its highest crystallinity (73%). The results reject the concept that crystallinity promotes transmission. Synthesis conditions and oxidation rates considerably influence the performance of electronics and the spatial distribution of electrons. Producing PANI with a restricted quantity of solvents optimally optimizes its conductivity and dielectric properties, thereby impacting its electromagnetic interference (EMI) shielding.