Surface-Enhanced Spectra on D-Gluconic Acid Coated Silver Nanoparticles

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dc.contributor.authorOsorio Roman, Igor O.
dc.contributor.authorOrtega Vasquez, Victoria
dc.contributor.authorVargas C, Victor
dc.contributor.authorAroca, Ricardo F.
dc.date.accessioned2024-01-10T12:09:01Z
dc.date.available2024-01-10T12:09:01Z
dc.date.issued2011
dc.description.abstractCoated silver (Ag) colloids synthesized with D-glucose permit the observation of surface-enhanced fluorescence (SEF) and surface-enhanced resonance Raman scattering (SERRS) of the rhodamine B (RhB) molecule. The organic coating formed during the synthesis of the Ag nanostructures was identified by its surface-enhanced Raman scattering (SERS) spectrum as D-gluconic acid. The RhB molecule is used to exemplify the distance dependence of SEF and SERRS on the coated Ag nanostructures. The fluorescence enhancement factor for RhB on D-gluconic acid coated silver nanoparticles was determined experimentally and estimated using a simple model. Further support for the plasmon enhancement is obtained from the fact that the measured fluorescence lifetime of RhB on the silver coated with D-gluconic acid is shorter than that found on a glass surface. A very modest enhancement factor is obtained, as expected for very short distance between RhB and the metal surface. Given the very thin metal fluorophore separation, estimated from the size of the D-gluconic acid, the energy transfer or fluorescence quenching is still efficient and the SEF enhancement is just overcoming the energy transfer. Therefore, both SEF and SERRS are observed. Notably, the aggregation of coated nanoparticles also increases the enhancement factor for SEF.
dc.description.funderFONDECYT
dc.fechaingreso.objetodigital2024-05-16
dc.format.extent6 páginas
dc.fuente.origenWOS
dc.identifier.doi10.1366/11-06279
dc.identifier.eissn1943-3530
dc.identifier.issn0003-7028
dc.identifier.pubmedidMEDLINE:21819772
dc.identifier.urihttps://doi.org/10.1366/11-06279
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/76450
dc.identifier.wosidWOS:000293206800002
dc.information.autorucQuímica;Osorio I;S/I;207713
dc.issue.numero8
dc.language.isoen
dc.nota.accesocontenido parcial
dc.pagina.final843
dc.pagina.inicio838
dc.publisherSAGE PUBLICATIONS INC
dc.revistaAPPLIED SPECTROSCOPY
dc.rightsacceso restringido
dc.subjectD-gluconic acid
dc.subjectCoated nanoparticles
dc.subjectSilver nanopartides
dc.subjectPlasmon enhanced emission
dc.subjectSurface-enhanced resonance Raman scattering
dc.subjectSERRS
dc.subjectSurface-enhanced fluorescence
dc.subjectSEE
dc.subjectFLUORESCENCE
dc.subjectLUMINESCENCE
dc.subjectFILM
dc.subject.ods03 Good Health and Well-being
dc.subject.odspa03 Salud y bienestar
dc.titleSurface-Enhanced Spectra on D-Gluconic Acid Coated Silver Nanoparticles
dc.typeartículo
dc.volumen65
sipa.codpersvinculados207713
sipa.indexWOS
sipa.indexScopus
sipa.trazabilidadCarga SIPA;09-01-2024
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