Controlled polymerization of silver nanoparticle dispersed poly (aniline-co-3–bromo aniline) electroactive composites-one pot synthesis and characterization

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Controlled polymerization of silver dispersed poly (aniline -co-3–Bromo Aniline) electroactive composites was synthesized by using soft template polymerization. The formation of complexes between silver nanoparticles (AgNPs) and a polyaniline matrix results in ordered nanostructured materials. In this study, we synthesized a new series of copolymer composites of silver-dispersed poly(aniline-co-3-bromoaniline) using an in-situ chemical oxidative polymerization method at different molar ratios of the monomers. The resulting composites were characterized by using UV–vis spectroscopy, FT–IR spectroscopy, X-ray diffraction (XRD), and scanning electron microscopy (SEM). The optical absorption spectrum revealed peaks at 338 nm and 596 nm, attributed to π–π*and n–π* electronic transitions. FT–IR spectra confirmed the presence of benzenoid and quinoid rings within the copolymer system. XRD analysis indicated the amorphous nature of the copolymer and crystalline nature of metal nanoparticles, while SEM images displayed agglomerated spherical granular morphology with average particle sizes ranging from 150 to 300 nm with uniform dispersion of metal nanoparticles. The four probe electrical conductivity measurements shows an electroactive nature whose conductivity ranges from 1.13 × 10−5 to 5.16 × 10−8 S/cm. These nanocomposites possess enhanced electrical and optical properties compared to their individual components for industrial applications.