Rare earth doped synthetic opals and inverse opals

Detalhes bibliográficos
Autor(a) principal: Bueno, L. A.
Data de Publicação: 2002
Outros Autores: Bertholdo, R., Barros, D. A., Messaddeq, Younes [UNESP], Ribeiro, SJL
Tipo de documento: Artigo de conferência
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.1117/12.456543
http://hdl.handle.net/11449/38009
Resumo: Monodisperse 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.
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spelling Rare earth doped synthetic opals and inverse opalsopalsinverse opalslanthanide ionsMonodisperse 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.UNESP, Inst Chem, BR-14801970 Araraquara, SP, BrazilUNESP, Inst Chem, BR-14801970 Araraquara, SP, BrazilSpie - Int Soc Optical EngineeringUniversidade Estadual Paulista (Unesp)Bueno, L. A.Bertholdo, R.Barros, D. A.Messaddeq, Younes [UNESP]Ribeiro, SJL2014-05-20T15:28:07Z2014-05-20T15:28:07Z2002-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObject121-129http://dx.doi.org/10.1117/12.456543Sol-gel Optics Vi. Bellingham: Spie-int Soc Optical Engineering, v. 4804, p. 121-129, 2002.0277-786Xhttp://hdl.handle.net/11449/3800910.1117/12.456543WOS:00018000040001629985038419178156446047463034654Web of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengSol-gel Optics Viinfo:eu-repo/semantics/openAccess2021-10-23T21:41:25Zoai:repositorio.unesp.br:11449/38009Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T19:09:23.000971Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Rare earth doped synthetic opals and inverse opals
title Rare earth doped synthetic opals and inverse opals
spellingShingle Rare earth doped synthetic opals and inverse opals
Bueno, L. A.
opals
inverse opals
lanthanide ions
title_short Rare earth doped synthetic opals and inverse opals
title_full Rare earth doped synthetic opals and inverse opals
title_fullStr Rare earth doped synthetic opals and inverse opals
title_full_unstemmed Rare earth doped synthetic opals and inverse opals
title_sort Rare earth doped synthetic opals and inverse opals
author Bueno, L. A.
author_facet Bueno, L. A.
Bertholdo, R.
Barros, D. A.
Messaddeq, Younes [UNESP]
Ribeiro, SJL
author_role author
author2 Bertholdo, R.
Barros, D. A.
Messaddeq, Younes [UNESP]
Ribeiro, SJL
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Universidade Estadual Paulista (Unesp)
dc.contributor.author.fl_str_mv Bueno, L. A.
Bertholdo, R.
Barros, D. A.
Messaddeq, Younes [UNESP]
Ribeiro, SJL
dc.subject.por.fl_str_mv opals
inverse opals
lanthanide ions
topic opals
inverse opals
lanthanide ions
description Monodisperse 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.
publishDate 2002
dc.date.none.fl_str_mv 2002-01-01
2014-05-20T15:28:07Z
2014-05-20T15:28:07Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/conferenceObject
format conferenceObject
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://dx.doi.org/10.1117/12.456543
Sol-gel Optics Vi. Bellingham: Spie-int Soc Optical Engineering, v. 4804, p. 121-129, 2002.
0277-786X
http://hdl.handle.net/11449/38009
10.1117/12.456543
WOS:000180000400016
2998503841917815
6446047463034654
url http://dx.doi.org/10.1117/12.456543
http://hdl.handle.net/11449/38009
identifier_str_mv Sol-gel Optics Vi. Bellingham: Spie-int Soc Optical Engineering, v. 4804, p. 121-129, 2002.
0277-786X
10.1117/12.456543
WOS:000180000400016
2998503841917815
6446047463034654
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Sol-gel Optics Vi
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 121-129
dc.publisher.none.fl_str_mv Spie - Int Soc Optical Engineering
publisher.none.fl_str_mv Spie - Int Soc Optical Engineering
dc.source.none.fl_str_mv Web of Science
reponame:Repositório Institucional da UNESP
instname:Universidade Estadual Paulista (UNESP)
instacron:UNESP
instname_str Universidade Estadual Paulista (UNESP)
instacron_str UNESP
institution UNESP
reponame_str Repositório Institucional da UNESP
collection Repositório Institucional da UNESP
repository.name.fl_str_mv Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)
repository.mail.fl_str_mv
_version_ 1808129026096627712

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