Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5376146 | Chemical Physics | 2007 | 9 Pages |
Abstract
The electrochemical behaviour and nonlinear optical properties of l-Cysteine on Ag(1Â 1Â 1) single crystal electrodes in a non adsorbing electrolyte have been investigated for the first time. l-Cysteine adsorbs on Ag(1Â 1Â 1) stronger than on Au(1Â 1Â 1) and is stable over a wider range of potential. Reduction/oxidation processes have been identified at potentials well below the potential of zero charge. The adsorption process at a controlled potential value has been followed by measurements of the second harmonic response, which mainly responds to the electronic changes produced at the interface by the formation of the Ag-S bond. The film formed on Ag(1Â 1Â 1) exhibits rather insulating properties in the potential region positive to the potential of zero charge.
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Physical Sciences and Engineering
Chemistry
Physical and Theoretical Chemistry
Authors
E. Santos, L.B. Avalle, R. Scurtu, H. Jones,