Rare earth doped synthetic opals and inverse opals

dc.contributorUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-20T15:28:07Z
dc.date.available2014-05-20T15:28:07Z
dc.date.created2014-05-20T15:28:07Z
dc.date.issued2002-01-01
dc.identifierSol-gel Optics Vi. Bellingham: Spie-int Soc Optical Engineering, v. 4804, p. 121-129, 2002.
dc.identifier0277-786X
dc.identifierhttp://hdl.handle.net/11449/38009
dc.identifier10.1117/12.456543
dc.identifierWOS:000180000400016
dc.identifier2998503841917815
dc.identifier6446047463034654
dc.description.abstractMonodisperse spheres of silica and latex were obtained by a surfactant free styrene polimerization and the Stober method respectively. Controlling settling either by centrifugation or by dip-coating colloidal crystals could be obtained. Silica inverse opals were prepared by using the latex colloidal crystals as templates and TEOS/ethanol solution. Eu3+ containing silica spheres were obtained dispersing silica spheres in Eu(NO3)(3) isopropanol solutions. Emission spectra suggest the formation of an amorphous Eu3+ containing phase well adhered at the spheres surface. The utilization of solutions of trifluoroacetates salts of Pb2+ and Eu3+ was observed to destroy the silica spherical pattern when samples are treated at 1000degreesC. In that case nanocrystals of PbF2 and amorphous silica were obtained after heat treatment.
dc.languageeng
dc.publisherSpie - Int Soc Optical Engineering
dc.relationSol-gel Optics Vi
dc.rightsAcesso aberto
dc.sourceWeb of Science
dc.subjectopals
dc.subjectinverse opals
dc.subjectlanthanide ions
dc.titleRare earth doped synthetic opals and inverse opals
dc.typeActas de congresos


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