Synthesis, self-assembly and electrochemical behavior of disulphide derivatised mesoporphyrin on gold electrodes

Abstract

Disulphide derivatised mesoporphyrin (DSDMP) and its cobalt complex Co(II)DSDMP were conveniently synthesized and successfully immobilized onto gold surface by monolayer self-assembly of disulfide. The modified electrode was characterized by Infrared Spectrometer (IR) and X-ray photoelectron spectroscopy (XPS) and confirmed electrochemically by cyclic voltammogram (CV) and differential pulse voltammogram (DPV). The characterization results supported the stable formation of Co(II)DSDMP monolayer with a surface coverage of 1.48×10-10 mol/cm-2 .