Abstract
ABSTRACT The chemically modified electrode (CME) which was constructed by covalently attaching Erythromycin (ERM) to a glassy carbon (GC) surface was investigated in Tris-HCl buffer (pH=6.0) by cyclic voltammetry (CV) and differential pulse voltammetry (DPV). In the potential range -0.5 to +0.4V, CME yields a pair of stable redox waves. It is the carbonyl group of the ERM molecule immobilized on the GC surface that behaves as a two-electron redox process involving one proton. The interaction of CME with DNA was also studied by DPV. The CME shows the same interaction with DNA as that in the solution. And the interactive model between ERM and DNA was proved by fluorescence in aqueous solutions.
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