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Enhanced photoluminescence features of Eu3+-modified di-ureasil-zirconium oxocluster organic-inorganic hybrids

dc.contributor.authorFerreira, R. A. S.
dc.contributor.authorOliveira, D. C. [UNESP]
dc.contributor.authorMaia, L. Q. [UNESP]
dc.contributor.authorVicente, C. M. S.
dc.contributor.authorAndre, P. S.
dc.contributor.authorBermudez, V. Zea
dc.contributor.authorRibeiro, Sidney José Lima [UNESP]
dc.contributor.authorCarlos, L. D.
dc.contributor.institutionUniv Aveiro
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniv Tras os Montes & Alto Douro
dc.date.accessioned2014-05-20T15:31:35Z
dc.date.available2014-05-20T15:31:35Z
dc.date.issued2010-10-01
dc.description.abstractIn this work, a series of transparent di-ureasil hybrids containing different amounts of methacrylic acid modified zirconium tetrapropoxide (ZrMcOH) nanoclusters (5-85 mol%) and incorporating EuCl3 and [Eu(tta)(3)(H2O)(2)](tta = thenoyltrifluoroacetonate) complex were prepared. These hybrids are multi-wave-length emitters due to the convolution of the host intrinsic emission (electron-hole recombinations occurring in siliceous and urea cross-linkages) Eu3+ intra-4f(6) transitions. The ZrMcOH incorporation deviates the maximum excitation wavelength of the hybrid host intrinsic emission from the UV (365 nm) to the blue (420 nm) and enhances the absolute emission quantum yield from 6.0 +/- 0.6% to 9.0 +/- 0.9%, and contributes to an increase in the D-5(0) lifetime values, quantum efficiency due to a decrease in the non-radiative transition probability and OH groups coordinated to the Eu3+ ions. (C) 2010 Elsevier B.V. All rights reserved.en
dc.description.affiliationUniv Aveiro, Dept Phys, CICECO, P-3810193 Aveiro, Portugal
dc.description.affiliationUNESP, Inst Chem, Araraquara, SP, Brazil
dc.description.affiliationUniv Aveiro, Inst Telecomunicacoes, P-3810193 Aveiro, Portugal
dc.description.affiliationUniv Tras os Montes & Alto Douro, Dept Chem, CQ VR, P-5001801 Vila Real, Portugal
dc.description.affiliationUnespUNESP, Inst Chem, Araraquara, SP, Brazil
dc.format.extent1587-1591
dc.identifierhttp://dx.doi.org/10.1016/j.optmat.2010.05.028
dc.identifier.citationOptical Materials. Amsterdam: Elsevier B.V., v. 32, n. 12, p. 1587-1591, 2010.
dc.identifier.doi10.1016/j.optmat.2010.05.028
dc.identifier.issn0925-3467
dc.identifier.lattes6446047463034654
dc.identifier.orcid0000-0003-3286-9440
dc.identifier.urihttp://hdl.handle.net/11449/40686
dc.identifier.wosWOS:000283971200007
dc.language.isoeng
dc.publisherElsevier B.V.
dc.relation.ispartofOptical Materials
dc.relation.ispartofjcr2.320
dc.relation.ispartofsjr0,592
dc.rights.accessRightsAcesso restritopt
dc.sourceWeb of Science
dc.subjectOrganic/inorganic di-ureasil hybridsen
dc.subjectEu3+en
dc.subjectPhotoluminescenceen
dc.subjectEmission quantum yieldsen
dc.titleEnhanced photoluminescence features of Eu3+-modified di-ureasil-zirconium oxocluster organic-inorganic hybridsen
dc.typeArtigopt
dcterms.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dcterms.rightsHolderElsevier B.V.
dspace.entity.typePublication
relation.isOrgUnitOfPublicationbc74a1ce-4c4c-4dad-8378-83962d76c4fd
relation.isOrgUnitOfPublication.latestForDiscoverybc74a1ce-4c4c-4dad-8378-83962d76c4fd
unesp.author.lattes6446047463034654
unesp.author.orcid0000-0003-3286-9440[7]
unesp.campusUniversidade Estadual Paulista (UNESP), Instituto de Química, Araraquarapt
unesp.departmentQuímica Inorgânica - IQARpt

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