Plasmonic-Ceria Nanoparticles as Fluorescence Intensity and Lifetime Quenching Optical Sensor

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dc.contributor.authorShehata, Naderen
dc.contributor.authorSamir, Effaten
dc.contributor.authorKandas, Ishacen
dc.contributor.departmentElectrical and Computer Engineeringen
dc.date.accessioned2018-09-21T16:44:53Zen
dc.date.available2018-09-21T16:44:53Zen
dc.date.issued2018-08-27en
dc.date.updated2018-09-21T07:14:14Zen
dc.description.abstractCeria nanoparticles have been recently used as an optical fluorescent material with visible emission under ultraviolet excitation, due to the formation of trivalent cerium ions with corresponding oxygen vacancies. This paper introduces the enhancement of both fluorescence emission and lifetime through adding gold nanoparticles. The reason is due to possible coupling between the plasmonic resonance of gold nanoparticles and the fluorescence emission of ceria that has been achieved, along with enhanced formation of trivalent cerium ions. Both factors lead to higher fluorescence intensity peaks and shorter fluorescence lifetimes. As an application, gold-ceria nanoparticles have been used as an optical sensing material for lead particles in aqueous media based on fluorescence quenching. Stern-Volmer constant of in-situ gold-ceria nanoparticles is found to be 2.424 M<sup>&minus;1</sup>, with a relative intensity change of up to 40% at 0.2 g/L.en
dc.description.versionPublished versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.citationShehata, N.; Samir, E.; Kandas, I. Plasmonic-Ceria Nanoparticles as Fluorescence Intensity and Lifetime Quenching Optical Sensor. Sensors 2018, 18, 2818.en
dc.identifier.doihttps://doi.org/10.3390/s18092818en
dc.identifier.urihttp://hdl.handle.net/10919/85080en
dc.language.isoenen
dc.publisherMDPIen
dc.rightsCreative Commons Attribution 4.0 Internationalen
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en
dc.subjectplasmonicen
dc.subjectgold nanoparticlesen
dc.subjectceriaen
dc.subjectfluorescenceen
dc.subjectsensoren
dc.titlePlasmonic-Ceria Nanoparticles as Fluorescence Intensity and Lifetime Quenching Optical Sensoren
dc.title.serialSensorsen
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten

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