Abstract
An effective technique is proposed in this study to synthesize a novel polymer, based on the copolymerization of pyrrole with a synthesized monomer (phenylazepane-2-one), combining the character of both conductivity and solubility. The reaction was cationically catalyzed, using an acid exchanged clay (Maghnite-H+) as an ecological catalyst. The reaction synthesis of poly[(phenylazepane-2-one)-co-(pyrrole)] abbreviated poly(PAP) has been carried out in dichloromethane. The reaction yield was 85% at a temperature of 25 °C for 4 h using 4% of catalyst. Chemical structures have been characterized by proton and carbon nuclear magnetic resonance (1H-NMR and 13C-NMR), ultraviolet/visible spectroscopy (UV–Vis) and Fourier transform infrared spectroscopy (FT-IR). Thermal properties have been evaluated by differential scanning calorimetry and thermal gravimetric analysis, showing the thermal stability of the poly(PAP) up to 333 °C. Solubility tests confirmed the solubility of poly(PAP) in various common solvents. The indirect band-gap was found 1.22 eV using Tauc’s formula. The semiconductor behavior poly(PAP) has been proven by the evolution of ac electrical conductivity and dielectric properties as a function of frequency and temperature. These new properties allow direct application of poly(PAP) on all desired surfaces rather than conventional materials.
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