Molecular fluorescence in silica particles doped with quercetin-Al3+ complexes

Detalhes bibliográficos
Autor(a) principal: Frederice,Rafael
Data de Publicação: 2010
Outros Autores: Ferreira,Ana Paula Garcia, Gehlen,Marcelo Henrique
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Journal of the Brazilian Chemical Society (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532010000700008
Resumo: Silica particles doped with quercetin-Al3+ complex were prepared by hydrolysis and condensation of tetraethylorthosilicate (TEOS) using acid and basic catalysis. The acid catalysis resulted in particles with diameter about 200 nm. Basic catalysis with TEOS was performed over a quercetin doped alumina-sol used as a core precursor, and fluorescent finger-shaped SiO2 particles were obtained. The quercetin-alumina-SiO2 fluorescence decays are biexponential, and this character is ascribed to two types of quercetin-Al3+ complexes entrapped in the core of the system.
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spelling Molecular fluorescence in silica particles doped with quercetin-Al3+ complexessilica particlesfluorescence spectroscopyprobesflavonoidSilica particles doped with quercetin-Al3+ complex were prepared by hydrolysis and condensation of tetraethylorthosilicate (TEOS) using acid and basic catalysis. The acid catalysis resulted in particles with diameter about 200 nm. Basic catalysis with TEOS was performed over a quercetin doped alumina-sol used as a core precursor, and fluorescent finger-shaped SiO2 particles were obtained. The quercetin-alumina-SiO2 fluorescence decays are biexponential, and this character is ascribed to two types of quercetin-Al3+ complexes entrapped in the core of the system.Sociedade Brasileira de Química2010-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532010000700008Journal of the Brazilian Chemical Society v.21 n.7 2010reponame:Journal of the Brazilian Chemical Society (Online)instname:Sociedade Brasileira de Química (SBQ)instacron:SBQ10.1590/S0103-50532010000700008info:eu-repo/semantics/openAccessFrederice,RafaelFerreira,Ana Paula GarciaGehlen,Marcelo Henriqueeng2010-07-30T00:00:00Zoai:scielo:S0103-50532010000700008Revistahttp://jbcs.sbq.org.brONGhttps://old.scielo.br/oai/scielo-oai.php||office@jbcs.sbq.org.br1678-47900103-5053opendoar:2010-07-30T00:00Journal of the Brazilian Chemical Society (Online) - Sociedade Brasileira de Química (SBQ)false
dc.title.none.fl_str_mv Molecular fluorescence in silica particles doped with quercetin-Al3+ complexes
title Molecular fluorescence in silica particles doped with quercetin-Al3+ complexes
spellingShingle Molecular fluorescence in silica particles doped with quercetin-Al3+ complexes
Frederice,Rafael
silica particles
fluorescence spectroscopy
probes
flavonoid
title_short Molecular fluorescence in silica particles doped with quercetin-Al3+ complexes
title_full Molecular fluorescence in silica particles doped with quercetin-Al3+ complexes
title_fullStr Molecular fluorescence in silica particles doped with quercetin-Al3+ complexes
title_full_unstemmed Molecular fluorescence in silica particles doped with quercetin-Al3+ complexes
title_sort Molecular fluorescence in silica particles doped with quercetin-Al3+ complexes
author Frederice,Rafael
author_facet Frederice,Rafael
Ferreira,Ana Paula Garcia
Gehlen,Marcelo Henrique
author_role author
author2 Ferreira,Ana Paula Garcia
Gehlen,Marcelo Henrique
author2_role author
author
dc.contributor.author.fl_str_mv Frederice,Rafael
Ferreira,Ana Paula Garcia
Gehlen,Marcelo Henrique
dc.subject.por.fl_str_mv silica particles
fluorescence spectroscopy
probes
flavonoid
topic silica particles
fluorescence spectroscopy
probes
flavonoid
description Silica particles doped with quercetin-Al3+ complex were prepared by hydrolysis and condensation of tetraethylorthosilicate (TEOS) using acid and basic catalysis. The acid catalysis resulted in particles with diameter about 200 nm. Basic catalysis with TEOS was performed over a quercetin doped alumina-sol used as a core precursor, and fluorescent finger-shaped SiO2 particles were obtained. The quercetin-alumina-SiO2 fluorescence decays are biexponential, and this character is ascribed to two types of quercetin-Al3+ complexes entrapped in the core of the system.
publishDate 2010
dc.date.none.fl_str_mv 2010-01-01
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=S0103-50532010000700008
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532010000700008
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S0103-50532010000700008
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 Sociedade Brasileira de Química
publisher.none.fl_str_mv Sociedade Brasileira de Química
dc.source.none.fl_str_mv Journal of the Brazilian Chemical Society v.21 n.7 2010
reponame:Journal of the Brazilian Chemical Society (Online)
instname:Sociedade Brasileira de Química (SBQ)
instacron:SBQ
instname_str Sociedade Brasileira de Química (SBQ)
instacron_str SBQ
institution SBQ
reponame_str Journal of the Brazilian Chemical Society (Online)
collection Journal of the Brazilian Chemical Society (Online)
repository.name.fl_str_mv Journal of the Brazilian Chemical Society (Online) - Sociedade Brasileira de Química (SBQ)
repository.mail.fl_str_mv ||office@jbcs.sbq.org.br
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