SERS studies of the adsorption of guanine derivatives on gold colloidal nanoparticles
- 7 September 2005
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Physical Chemistry Chemical Physics
- Vol. 7 (20), 3610-3613
- https://doi.org/10.1039/b508850j
Abstract
Surface enhanced Raman scattering spectra of guanine, guanosine and 2′-deoxyguanosine adsorbed on gold colloidal nanoparticles were obtained. From the striking similarity of the SERS spectra of these compounds, it can be evidenced that guanosine and 2′-deoxyguanosine adsorb on gold nanoparticles through the guanine moiety. The molecular sites involved in the interaction with the gold surface are the same for the 3 compounds: the oxygen of the carbonilic group and the N7 atom. Guanine, guanosine and 2′-deoxyguanosine adsorb on the gold substrates with a tilted orientation with respect to the metal surface. SERS data were interpreted taking into account density functional theoretical (DFT) calculations of guanine.This publication has 21 references indexed in Scilit:
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