A novel electrochemical sensor was constructed for highly sensitive and selective determination of melamine by depositing a molecularly imprinted copolymer film, prepared by electrocopolymerization of gallic acid and o-phenylenediamine from aqueous electrolyte solution, onto glassy carbon electrode surface. The morphologic feature of the modified electrode was characterized via cyclic voltammetry, electrochemical impedance spectrometry, and scanning electron microscopy. The interactions between the molecularly imprinted copolymer and melamine cause the decrease in the peak currents of hexacyan...
