The electropolymerized films of poly() on an indium-tin oxide (ITO) electrode was prepared by anodic electrooxidation of a dichloromethane solution of a triphenylamine-carrying organic molecule and were characterized/studied by ultraviolet-visible absorption spectroscopy, X-ray photoelectron spectroscopy, X-ray diffraction, electrochemical impedance spectroscopy, cyclic voltammetry, and photoelectrochemical measurements. Poly() films were found to show surface-controlled TPA associated quasi-reversible redox and exceptionally high photocurrent generation properties. At a zero external bias potential and under 100 mW/cm white light irradiation, a photoelectrochemical device composed of a poly()-modified ITO as the working electode, a platinum disk counter electrode, and saturated calomel electrode reference electrode in a 0.1 M NaSO aqueous solution exhibited a significant cathode photocurrent density of 2.2 μA/cm, which could be switched to be anodic and outperform most previously reported molecule-based modified ITO electrodes under similar experimental conditions. The results indicate that poly() films offer a number of future perspectives ranging from organic photovoltaic to photoelectrochemical catalysis and sensing.
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