Modification of Thiols onto Single Crystal Surfaces of Gold Electrodes for Metalloportein Electrochemistry
Adsorption behavior of pyridine thiols (PySH) and corresponding disulfides (PySSPy) onto gold single crystal surfaces has been examined to understand in detail the suitable surface structures of the modified electrodes for cytochrome c electrochemistry. On the Au(111) surface PySH was rather easily decomposed with the C-S bond cleavage during modification of thiols from an ethanolic PySH solution, while PySSPy was more stable under the same conditions. Very interestingly, cytochrome c electrochemistry depended very much on the modifier structure at single crystal surfaces.
KeywordsBond Cleavage Modify Electrode Electron Transfer Reaction Direct Electron Transfer Single Crystal Surface
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