화학공학소재연구정보센터
Journal of Electroanalytical Chemistry, Vol.580, No.2, 313-319, 2005
Electrochemical and morphological characterization of poly[(R)-(-)-3-(1-pyrrolyl)propyl-N-(3,5-dinitrobenzoyl)-alpha-phenylgly cinate] films deposited on ITO electrodes
Poly[(R)-(-)-3-(1-pyrrolyl)propyl-N-(3,5-dinitrobenzoyl)-alpha-phenylgly cinate] films were deposited on ITO electrodes using potentiodynamic and galvanostatic methods. Polymerization occurred as a charge dependent process at 1.0 V vs. Ag/Ag+(CH3CN) and was not affected by the presence of nitro groups in the monomer. The surface morphology of the film and its electrochemical properties were studied as a function of deposition charge (Q(dep)) and deposition method. Film thickness increased in a quasi-linear manner with respect to Q(dep) within the range 40-80 mC cm(2). The galvanostatic method provided easier control Of Q(dep) compared with potentiodynamic deposition, and produced a more adherent film with homogeneous grain geometry. Cyclic voltammetry revealed a well defined redox couple at the anodic region, attributable to polymer p-doping, and a poorly defined redox pair at the cathodic region, attributable to the reduction of the nitro group. (c) 2005 Elsevier B.V. All rights reserved.