Abstract

• Poly (pyrrole-2formyl pyrrole) /zinc oxide, P(Py-2FPy)/ZnO composite film has been developed in this work. The inorganic ZnO nanoparticles were synthesized by room temperature solution method. While the pure copolymer P(Py-2FPy) film was prepared by spin coating through copolymerization, the copolymer composited with ZnO, (P(Py-2FPy)/ZnO) films, were prepared by novel ex-situ copolymerization method. The volumes of ZnO in the copolymer matrices were varied from 0.1, 0.2, 0.3, 0.4 and 0.5 mL. ZnO nanoparticles and the composite film formation were characterized by Ultraviolet visible spectroscopy (UV-Vis), Fourier transform infrared spectroscopy (FT-IR) and X-ray diffraction (XRD) analysis. The important parameters of films including dissipation factor and capacitance depending on AC (alternating current) frequencies in the range from 1MHz to10 MHz were measured by LCR meter. The electrical conductivities of pure copolymer film and organic-inorganic composite films were investigated based on their measurements of electrical parameters. It was found out that the composite films were conductive and AC conductivities of composite films increase with increasing the volume of ZnO nanoparticles.