A Novel Electrochromic Polymer: Poly[1,5-(1-Pyrrolyl)-9,10-Anthraquinone]

In this study; a novel monomer 1,5-(1-pyrrolyl)-9,10-anthraquinone which contains pyrrole (Py) and anthraquinone was synthesized. The structure of the synthesized novel monomer was characterized by Fourier Transform Infrared Spectroscopy (FTIR) and 1H-NMR Spectroscopy methods; electrochemical behavior of the monomer was investigated by cyclic voltammetry (CV) method. Electropolymerization of 1,5-(1-pyrrolyl)-9,10-anthraquinone monomer in nitrobenzene solvent medium that contains supporting electrolyte TBAPF was carried out on ITO-coated glass electrode surface through continuous scanning of operating voltage. The produced novel polymer film’s electrochemical characterization was performed with cyclic voltammetry and chronoamperometry (CA) methods. The electrical conductivity of the polymer was measured by four-point conductivity method; the morphology of the polymer was analyzed by scanning electron microscopy (SEM). Spectroscopic analysis was carried out by FTIR spectroscopy and UV-Vis absorption spectroscopy. Some optoelectrochemical studies were done to investigate polymer film’s electrochromic properties. Optic contrast of the polymer film was found % 50 at 750 nm. Polymer conductivity was measured range of 1.83x10^-3 S/cm. Polymer film’s color was close to dark orange when the polymer was reduced and color of the polymer film was dark blue tone while the polymer was oxidizing.