Surface‐enhanced Raman scattering (SERS) of nucleic acid components in silver sol: Guanine series

Abstract

Abstract The surface‐enhanced Raman scattering (SERS) of guanine, guanosine, 2′‐deoxyguanosine, 5′‐dGMP, 5′‐rGMP, 5′‐rGDP and 5′‐rGTP adsorbed on aqueous silver sol has been investigated. The peak position and shape of the guanine ring breathing mode are discussed in terms of sugar conformers, the adsorption geometry, the enol‐to‐keto isomerization and the protonation at the N‐7 atom of the guanine base.