RT Conference Proceedings
T1 Effect of graphene substrate on the SERS Spectra of Aromatic bifunctional molecules on metal nanoparticles
A1 López-Ramírez, María Rosa
A1 Castro, Jose Luis
A1 Arenas Rosado, Juan Francisco
A1 Soto-Martín, Juan
A1 Otero, J.C.
K1 Efecto Raman de superficie intensificada
AB The design of molecular sensors plays a very important role within nanotechnology andespecially in the development of different devices for biomedical applications. Biosensors can be classified according to various criteria such as the type of interaction established between the recognition element and the analyte or the type of signal detection from the analyte(transduction). When Raman spectroscopy is used as an optical transduction technique thevariations in the Raman signal due to the physical or chemical interaction between the analyte and the recognition element has to be detected. Therefore any significant improvement in the amplification of the optical sensor signal represents a breakthrough in the design of molecular sensors. In this sense, Surface-Enhanced Raman Spectroscopy (SERS) involves an enormous enhancement of the Raman signal from a molecule in the vicinity of a metal surface.The main objective of this work is to evaluate the effect of a monolayer of graphene oxide (GO)on the distribution of metal nanoparticles (NPs) and on the global SERS enhancement of paminothiophenol (pATP) and 4-mercaptobenzoic acid (4MBA) adsorbed on this substrate.These aromatic bifunctional molecules are able to interact to metal NPs and also they offer thepossibility to link with biomolecules. Additionally by decorating Au or Ag NPs on graphene sheets, a coupled EM effect caused by the aggregation of the NPs and strong electronicinteractions between Au or Ag NPs and the graphene sheets are considered to be responsiblefor the significantly enhanced Raman signal of the analytes [1-2]. Since there are increasingneeds for methods to conduct reproducible and sensitive Raman measurements, GrapheneenhancedRaman Scattering (GERS) is emerging as an important method [3].
YR 2016
FD 2016-06-27
LK http://hdl.handle.net/10630/11650
UL http://hdl.handle.net/10630/11650
LA eng
NO Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tech.
DS RIUMA. Repositorio Institucional de la Universidad de Málaga
RD 20 mar 2026