Features of surface enhanced Raman scattering in the systems with «hot spots»
Saint-Petersburg State University, Institute of Chemistry, 199034 Saint-Petersburg, Russia
* Corresponding author: email@example.com
Published online: 13 December 2016
In this work we demonstrate the features of SERS on the substrates with «hot spots» on the example of system «diaminostilbene - colloidal silver». We found that «hot spots» forming on aggregated nanoparticles exist on the metal substrates only at low concentration of ligand. This effect caused by the gradual filling of first monolayer by adsorbate molecules. Significantly higher enhancement factor is obtained for substrates with «hot spots», for which the participation of resonance processes in the formation of SERS signal is revealed also.
© The Authors, published by EDP Sciences, 2017
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