Electrochemical behavior of electro-generated poly-pyronin B (PyB) film was reported at a screen-printed
carbon electrode (SPCE). The poly(PyB) modified SPCE showed excellent redox activity in neutral and alkaline media.
Surface topography of poly(PyB) film modified electrode was analyzed by using atomic force microscopy (AFM) and
scanning electron microscopy (SEM). Poly(PyB) film coated electrode was characterized by electrochemical impedance
spectroscopy (EIS), UV–visible absorption spectroscopy (UV–vis) and cyclic voltammetry (CV). The poly(PyB) modified
electrode showed electrocatalytic response to the reduced form of nicotinamide adenine dinucleotide (NADH) in
physiological condition, and was used for the detection of NADH with high selectivity. The anodic peak current was
linearly related to concentrations of NADH over the range from 1x10-5 M to 5.2x10-4 M, and the detection limit was
5x10-7 M (S/N = 3).
Keywords: Electroactive polymer, Modified Electrode, Chemical sensors, Electrocatalytic oxidation, NADH, polymer thin-films, atomic force microscopy, electropolymerization, redox reaction, SPCE, polyazines, Selectivity, Reproducibility, analyte, poly(PyB)/SPCE
Rights & PermissionsPrintExport