Exploring the electrical and complex optical properties of as-synthesized thiophene-indole conducting copolymers

In this contest, a novel series of random thiophene-indole (Th-In) conducting copolymers have been synthesized through oxidative copolymerization of their monomers in aqueous medium at room temperature using anhydrous ferric chloride (FeCl3) as an oxidant. The structure of as-studied samples have been confirmed through X-ray diffraction (XRD) technique. Field emission-scanning electron microscopy (FE-SEM) ensured the morphology of as-prepared copolymers. The complex optical parameters of the samples have been estimated through ultraviolet-visible (UV-Vis) spectroscopy. The temperature dependence of dc electrical conductivity of the samples have been obtained over a temperature range 303–393 K, which found to be in the range 10−6–10−4 Scm−1 followed Arrhenius relation. The degradation behaviour has been studied through thermogravimetry (TG) and differential thermal analysis (DTA) techniques

Characterizing the electro-optical properties of polyaniline/poly(vinyl acetate) composite films as-synthesized through chemical route

In this study, the conductive polymer polyaniline/poly(vinyl acetate) PANi/PVAc composite thin films were synthesized by chemical oxidative polymerization method with ammonium per sulfate​ as an oxidizing agent in methanol. The as-synthesized composite were characterized by X-ray diffraction (XRD), Scanning electron microscopy (SEM), ultraviolet–visible (UV–Vis) spectroscopy and photoluminescence (PL) measurement. The temperature dependence of DC electrical conductivity measurements were carried out through a two probe technique. The broad peak was found in the PL spectra of the obtained composite at around 450 nm, suggested that the obtained composite retains more charge generation efficiency. The enhancement in the optical and electrical properties of PANi/PVAc composite makes it as a novel candidate in various optoelectronic applications