SERS scattering from adsorbed hexacyanoruthenate ion provides a wealth of information about adsorbate structure. It is clearly demonstrated that the molecule interacts with the metal via a CN bridge, the strength of which is dependent upon the metal surface (Ag or Cu) and the applied potential. The spectra from both metals show vibrational modes which are only IR active in bulk phase, indicating a symmetry lowering on adsorption. The potential dependence of SER scattering on copper clearly shows an inherent potential dependence of the enhancement process on that metal.
ASJC Scopus subject areas
- Colloid and Surface Chemistry