title: Graphene-enhanced Raman spectroscopy of thymine adsorbed on single-layer graphene.
abstract: Graphene-enhanced Raman scattering (GERS) spectra and coherent anti-Stokes Raman scattering (CARS) of thymine molecules adsorbed on a single-layer graphene were studied. The enhancement factor was shown to depend on the molecular groups of thymine. In the GERS spectra of thymine, the main bands are shifted with respect to those for molecules adsorbed on a glass surface, indicating charge transfer for thymine on graphene. The probable mechanism of the GERS enhancement is discussed. CARS spectra are in accord with the GERS results, which indicates similar benefit from the chemical enhancement.
authors.affiliation: Institute of Physics, National Academy of Sciences of Ukraine, 46 Nauki Ave., Kyiv, 03680 Ukraine.
authors.forename: Olena
authors.initials: O
authors.lastname: Fesenko
authors.affiliation: Institute of Physics, National Academy of Sciences of Ukraine, 46 Nauki Ave., Kyiv, 03680 Ukraine.
authors.forename: Galyna
authors.initials: G
authors.lastname: Dovbeshko
authors.affiliation: Center for Physical Sciences and Technology, Institute of Physics, A. Goštauto 11, Vilnius, LT-01108 Lithuania.
authors.forename: Andrej
authors.initials: A
authors.lastname: Dementjev
authors.affiliation: Center for Physical Sciences and Technology, Institute of Physics, A. Goštauto 11, Vilnius, LT-01108 Lithuania.
authors.forename: Renata
authors.initials: R
authors.lastname: Karpicz
authors.affiliation: Institute of Photonics, University of Eastern Finland, Yliopistokatu 7, Joensuu, FI-80101 Finland.
authors.forename: Tommi
authors.initials: T
authors.lastname: Kaplas
authors.affiliation: Institute of Photonics, University of Eastern Finland, Yliopistokatu 7, Joensuu, FI-80101 Finland.
authors.forename: Yuri
authors.initials: Y
authors.lastname: Svirko
keywords: Coherent anti-Stokes Raman scattering (CARS); Graphene-enhanced Raman scattering (GERS); Graphene-enhanced coherent anti-Stokes Raman scattering (GECARS); Single-layer graphene; Surface-enhanced Raman spectroscopy (SERS); Thymine