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Luminescence Enhancement of Carboxyl-Coated CdTe Quantum Dots by Silver Nanoparticles

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dc.contributor.authorde Melo, L. S A
dc.contributor.authorChaves, C. R.
dc.contributor.authorFilho, P. E. Cabral
dc.contributor.authorSaska, S. [UNESP]
dc.contributor.authorNigoghossian, K. [UNESP]
dc.contributor.authorGomes, A. S L
dc.contributor.authorMessaddeq, Younes [UNESP]
dc.contributor.authorRibeiro, Sidney José Lima [UNESP]
dc.contributor.authorSantos, B. S.
dc.contributor.authorFontes, A.
dc.contributor.authorde Araujo, R. E.
dc.contributor.institutionUniversidade Federal de Pernambuco (UFPE)
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-27T11:29:34Z
dc.date.available2014-05-27T11:29:34Z
dc.date.issued2013-06-01
dc.description.abstractMetallic nanoparticles (NPs) have been used to improve the sensibility of biosensors and bioassays either by enhancing radiative emission or inducing quenching process on fluorescent probes. The aim of this research was to study the interaction of silver and silver-pectin NPs with water-dispersed carboxyl-coated cadmium telluride (CdTe) quantum dots (QDs). Metallic NPs were observed to change the emission of these fluorophores through local field effects. In a solution-base platform, an increase of 82 % was observed for the CdTe emission due to the interaction of QDs and silver-pectin NPs. QDs interaction with silver NPs without pectin was also investigated and a smaller emission enhancement of 20 % was detected. We observed that the NPs' nature and QDs' surface charge and concentration are important parameters for NPs-QDs interaction. Moreover, the presence of the pectin polymer shows to be a key component to the observed fluorescence enhancement. © 2013 Springer Science+Business Media New York.en
dc.description.affiliationLaboratory of Biomedical Optics and Imaging Federal University of Pernambuco, Av. dos Reitores, Cidade Universitária, 50670-901 Recife, PE
dc.description.affiliationPharmaceutical Sciences Department Federal University of Pernambuco, Av. Artur de Sá, Cidade Universitária, 50670-901 Recife, PE
dc.description.affiliationBiophysics and Radiobiology Department Federal University of Pernambuco, Av. Dr. Moraes Rego, Cidade Universitária, 50670-901 Recife, PE
dc.description.affiliationInstitute of Chemistry São Paulo State University-UNESP, Rua Francisco Degni 55, Quitandinha, 14801-970 Araraquara, SP
dc.description.affiliationDepartment of Physics Federal University of Pernambuco, Av. Professor Luiz Freire, Cidade Universitária, 50670-901 Recife, PE
dc.description.affiliationUnespInstitute of Chemistry São Paulo State University-UNESP, Rua Francisco Degni 55, Quitandinha, 14801-970 Araraquara, SP
dc.format.extent1147-1153
dc.identifierhttp://dx.doi.org/10.1007/s11468-013-9524-z
dc.identifier.citationPlasmonics, v. 8, n. 2, p. 1147-1153, 2013.
dc.identifier.doi10.1007/s11468-013-9524-z
dc.identifier.issn1557-1955
dc.identifier.issn1557-1963
dc.identifier.lattes2998503841917815
dc.identifier.lattes6446047463034654
dc.identifier.orcid0000-0003-3286-9440
dc.identifier.scopus2-s2.0-84877610408
dc.identifier.urihttp://hdl.handle.net/11449/75493
dc.identifier.wosWOS:000320445700130
dc.language.isoeng
dc.relation.ispartofPlasmonics
dc.relation.ispartofjcr2.366
dc.relation.ispartofsjr0,679
dc.rights.accessRightsAcesso restrito
dc.sourceScopus
dc.subjectFluorescence enhancement
dc.subjectPlasmonics
dc.subjectQuantum dots
dc.subjectSilver nanoparticles
dc.titleLuminescence Enhancement of Carboxyl-Coated CdTe Quantum Dots by Silver Nanoparticlesen
dc.typeArtigo
dcterms.licensehttp://www.springer.com/open+access/authors+rights
dspace.entity.typePublication
unesp.author.lattes2998503841917815
unesp.author.lattes6446047463034654
unesp.author.orcid0000-0003-3286-9440[8]
unesp.campusUniversidade Estadual Paulista (UNESP), Instituto de Química, Araraquarapt
unesp.departmentQuímica Inorgânica - IQARpt

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Araraquara - IQAR - Instituto de Química