SiO2-GeO2 soot preform as a core for Eu2O3 nanocoating: Synthesis and photophysical study

dc.creatorRosa, ILV
dc.creatorOliveira, LH
dc.creatorSuzuki, CK
dc.creatorVarela, JA
dc.creatorLeite, ER
dc.creatorLongo, E
dc.date2008
dc.dateMAR
dc.date2014-11-18T13:19:03Z
dc.date2015-11-26T16:55:13Z
dc.date2014-11-18T13:19:03Z
dc.date2015-11-26T16:55:13Z
dc.date.accessioned2018-03-28T23:42:29Z
dc.date.available2018-03-28T23:42:29Z
dc.identifierJournal Of Fluorescence. Springer/plenum Publishers, v. 18, n. 2, n. 541, n. 545, 2008.
dc.identifier1053-0509
dc.identifierWOS:000253896400035
dc.identifier10.1007/s10895-007-0297-7
dc.identifierhttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/74297
dc.identifierhttp://www.repositorio.unicamp.br/handle/REPOSIP/74297
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/74297
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1277038
dc.descriptionNowadays solid state chemists have the possibility of work with low temperature strategies to obtain solid state materials with appropriate physical and chemical properties for useful technological applications. Photonic core shell materials having a core and shell domains composed by a variety of compounds have been synthesized by different methods. In this work we used silica-germania soot prepared by vapor-phase axial deposition as a core where a nanoshell of Eu2O3 was deposited. A new sol-gel like method was used to obtain the Eu2O3 nanoshell coating the SiO2-GeO2 particles, which was prepared by the polymeric precursor method. The photophysical properties of Eu3+ were used to obtain information about the rare earth surrounding in the SiO2-GeO2@Eu2O3 material during the sintering process. The sintering process was followed by the luminescence spectra of Eu3+ and all the samples present the characteristic emission related to the D-5(0) -> F-7(J) (J=0, 1, 2, 3 and 4). The ratios of the D-5(0) -> F-7(2)/D-5(0) -> F-7(1) emission intensity for the SiO2-GeO2@Eu2O3 systems were calculated and it was observed an increase in its values, indicating a low symmetry around the Eu3+ as the temperature increases.
dc.description18
dc.description2
dc.description541
dc.description545
dc.languageen
dc.publisherSpringer/plenum Publishers
dc.publisherNew York
dc.publisherEUA
dc.relationJournal Of Fluorescence
dc.relationJ. Fluoresc.
dc.rightsfechado
dc.rightshttp://www.springer.com/open+access/authors+rights?SGWID=0-176704-12-683201-0
dc.sourceWeb of Science
dc.subjecteuropium
dc.subjectluminescence
dc.subjectSiO2-GeO2
dc.subjectcore shell
dc.subjectnanocoating
dc.subjectGeo2
dc.titleSiO2-GeO2 soot preform as a core for Eu2O3 nanocoating: Synthesis and photophysical study
dc.typeArtículos de revistas


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