Europium incorporated in silica matrix obtained by sol-gel: luminescent materials

Detalhes bibliográficos
Autor(a) principal: Nassar,Eduardo José
Data de Publicação: 2003
Outros Autores: Ciuffi,Katia Jorge, Ribeiro,Sidney José Lima, Messaddeq,Younes
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Materials research (São Carlos. Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392003000400023
Resumo: In this work we report some aspects of the chemistry involved in the preparation of modified silicon oxide by the sol-gel process. Europium III compounds were used as luminescent probe. An organic-inorganic hybrid was obtained by hydrolysis of tetraethylorthosilicate (TEOS) and 3-aminopropyltriethoxysilane (APTS). The Eu III compounds were added in different ways. In the first, silica was prepared in the presence of Eu III, and in the second, Eu III was added on the silica surface. These materials were studied by luminescence, infrared spectroscopy and termogravimetric analysis. The results obtained for the hybrid material show different behavior for Eu III emission, which could be excited by the antenna effect and the influence of the surrounding in the luminescence quenching. The thermogravimetric data present different mass loss in samples to range temperature 50 - 150 °C. Thermogravimetric and infrared spectra showed that inorganic polymers incorporated the organic part.
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spelling Europium incorporated in silica matrix obtained by sol-gel: luminescent materialssol-gelluminescencesurface modifiedsilicaIn this work we report some aspects of the chemistry involved in the preparation of modified silicon oxide by the sol-gel process. Europium III compounds were used as luminescent probe. An organic-inorganic hybrid was obtained by hydrolysis of tetraethylorthosilicate (TEOS) and 3-aminopropyltriethoxysilane (APTS). The Eu III compounds were added in different ways. In the first, silica was prepared in the presence of Eu III, and in the second, Eu III was added on the silica surface. These materials were studied by luminescence, infrared spectroscopy and termogravimetric analysis. The results obtained for the hybrid material show different behavior for Eu III emission, which could be excited by the antenna effect and the influence of the surrounding in the luminescence quenching. The thermogravimetric data present different mass loss in samples to range temperature 50 - 150 °C. Thermogravimetric and infrared spectra showed that inorganic polymers incorporated the organic part.ABM, ABC, ABPol2003-12-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392003000400023Materials Research v.6 n.4 2003reponame:Materials research (São Carlos. Online)instname:Universidade Federal de São Carlos (UFSCAR)instacron:ABM ABC ABPOL10.1590/S1516-14392003000400023info:eu-repo/semantics/openAccessNassar,Eduardo JoséCiuffi,Katia JorgeRibeiro,Sidney José LimaMessaddeq,Youneseng2004-01-19T00:00:00Zoai:scielo:S1516-14392003000400023Revistahttp://www.scielo.br/mrPUBhttps://old.scielo.br/oai/scielo-oai.phpdedz@power.ufscar.br1980-53731516-1439opendoar:2004-01-19T00:00Materials research (São Carlos. Online) - Universidade Federal de São Carlos (UFSCAR)false
dc.title.none.fl_str_mv Europium incorporated in silica matrix obtained by sol-gel: luminescent materials
title Europium incorporated in silica matrix obtained by sol-gel: luminescent materials
spellingShingle Europium incorporated in silica matrix obtained by sol-gel: luminescent materials
Nassar,Eduardo José
sol-gel
luminescence
surface modified
silica
title_short Europium incorporated in silica matrix obtained by sol-gel: luminescent materials
title_full Europium incorporated in silica matrix obtained by sol-gel: luminescent materials
title_fullStr Europium incorporated in silica matrix obtained by sol-gel: luminescent materials
title_full_unstemmed Europium incorporated in silica matrix obtained by sol-gel: luminescent materials
title_sort Europium incorporated in silica matrix obtained by sol-gel: luminescent materials
author Nassar,Eduardo José
author_facet Nassar,Eduardo José
Ciuffi,Katia Jorge
Ribeiro,Sidney José Lima
Messaddeq,Younes
author_role author
author2 Ciuffi,Katia Jorge
Ribeiro,Sidney José Lima
Messaddeq,Younes
author2_role author
author
author
dc.contributor.author.fl_str_mv Nassar,Eduardo José
Ciuffi,Katia Jorge
Ribeiro,Sidney José Lima
Messaddeq,Younes
dc.subject.por.fl_str_mv sol-gel
luminescence
surface modified
silica
topic sol-gel
luminescence
surface modified
silica
description In this work we report some aspects of the chemistry involved in the preparation of modified silicon oxide by the sol-gel process. Europium III compounds were used as luminescent probe. An organic-inorganic hybrid was obtained by hydrolysis of tetraethylorthosilicate (TEOS) and 3-aminopropyltriethoxysilane (APTS). The Eu III compounds were added in different ways. In the first, silica was prepared in the presence of Eu III, and in the second, Eu III was added on the silica surface. These materials were studied by luminescence, infrared spectroscopy and termogravimetric analysis. The results obtained for the hybrid material show different behavior for Eu III emission, which could be excited by the antenna effect and the influence of the surrounding in the luminescence quenching. The thermogravimetric data present different mass loss in samples to range temperature 50 - 150 °C. Thermogravimetric and infrared spectra showed that inorganic polymers incorporated the organic part.
publishDate 2003
dc.date.none.fl_str_mv 2003-12-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392003000400023
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392003000400023
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S1516-14392003000400023
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv ABM, ABC, ABPol
publisher.none.fl_str_mv ABM, ABC, ABPol
dc.source.none.fl_str_mv Materials Research v.6 n.4 2003
reponame:Materials research (São Carlos. Online)
instname:Universidade Federal de São Carlos (UFSCAR)
instacron:ABM ABC ABPOL
instname_str Universidade Federal de São Carlos (UFSCAR)
instacron_str ABM ABC ABPOL
institution ABM ABC ABPOL
reponame_str Materials research (São Carlos. Online)
collection Materials research (São Carlos. Online)
repository.name.fl_str_mv Materials research (São Carlos. Online) - Universidade Federal de São Carlos (UFSCAR)
repository.mail.fl_str_mv dedz@power.ufscar.br
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