Characterization of chemically synthesized polypyrrole and controlling on morphological properties of its thin films

Abstract

Polypyrrole has been prepared in this work by chemical oxidative polymerization technique using monomer pyrrole in the presence of the oxidant (FeCl₃) in two mediums; aquatic and alcoholic. The diagnostic tests and structural properties of polymerized pyrrole have been described, such as Fourier transform infrared spectroscopy (FTIR), x-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), and energy dispersive x-ray (EDX) tests. The energy band gap (E_g) was also calculated using ultraviolet-visible spectroscopy (UV-VIS) measurements. It has also employed the tests of atomic force microscopy (AFM) to study the effects of each of the formation duration of thin films and the concentration of reacted materials to control the thickness and other morphological properties of thin films prepared by dip coating.