Investigation of electromagnetic radiation absorption behaviour of polyaniline-p-toluene sulphonate conducting polymer by synthesized electrochemical method

In this thesis; Polyaniline p-toluene sulphonate (PANI-PTS) films were obtained by the electropolymerization of aniline in acetonitrile solvent using electrochemical method. For this purpose, solutions of p-toluene sulfonic acid (PTSA) and p-toluene sulphonate (PTS) and tetra n-butyl ammonium p-toluene sulphonate (TBA-PTS) supporting electrolyte solutions were used. Characterization processes of PANI deposited on the electrode surface were performed using UV-vis-NIR Spectroscopy, FT-IR and Raman Spectroscopy and Scanning Electron Microscopy (SEM) methods. In this context; UV-vis-NIR and IR-related behaviors were investigated for the first time, and the strong absorption bands observed in the NIR region were explained by the charge transfer between the chains. The electronic and magnetic superior features of PANI has been shown to be highly effective on the interaction with the electromagnetic radiation (EMR) in the UV-vis-NIR and IR region. In SEM images; it was observed that the polymer films obtained were in the form of nanofibers. Conductivity values of PANI film which is deposited by electrochemical method were measured on Gold (Au) four-probe electrode surface and the highest conductivity value was reached in the literature. In addition, conductivity values were observed to show reversible behavior due to pH and voltage. The electrochromic behaviors of PANI films deposited on the platinum (Pt) disc and Indium Tin Oxide (ITO-PET) were investigated in detail and it was determined that the colors of different PANI forms can be obtained very clearly in the in-situ environment and can be reversibly controlled due to voltage.