Abstract
AbstractIn this work, the adsorption or binding of cytochrome c with 4‐pyridyl derivatives modified on the gold electrode was studied. It was found that the concentrations of electrolyte had much influence on the adsorption of cytochrome c. At lower concentrations of electrolyte (i.e., 2 mmol/L), the binding of cytochrome c with 4,4′‐bipyridyl or 4‐mercaptopyridine on the modified electrode surface can be detected by using the long dipping method for 4,4′‐bipyridine or pretreating the bis(4‐pyridyl) disulfide modified electrode at more negative potentials for 4‐mercaptopyridine. When the concentrations of the electrolyte increase, the binding of cytochrome c with the 4‐pyridyl derivatives changes from irreversible to reversible.
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