Surface-Enhanced Raman Scattering and Surface-Enhanced Resonance Raman Scattering Excitation Profiles of Ag-2,2´bipyridine Surface Complexes and of [Ru(bpy)3]2+ on Ag Colloidal Surfaces: Manifestations of the Charge transfer Resonance Contributions
SERS and SERRS excitation profiles of Ag-2,2´-bipyridine surface complexes and of tris(bipyridine) ruthenium cation on Ag colloidal surfaces are reported.The profiles provide evidence of CT resonance contribution to the overall SERS enhancement.