Fluorescence enhancement of a fluorescein derivative upon adsorption on cellulose

Autores
López, Sergio G.; Crovetto, Luis; Álvarez Pez, José M.; Talavera, Eva M.; San Roman, Enrique Arnoldo
Año de publicación
2014
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
9-[1-(2-Methyl-4-methoxyphenyl)]-6-hydroxy-3H-xanthen-3-one (2-Me-4-OMe TG) is a fluorescein derivative dye whose photophysical properties show a remarkable pH dependence. In aqueous solution the fluorescence quantum yield (Φf) of its anionic species is nearly a hundred times higher than that of its neutral species. Such a large difference in Φf makes 2-Me-4-OMe TG useful as an “on–off” pH indicator. Here we report that adsorption on the surface of microcrystalline cellulose exerts a profound effect upon the photophysical properties of 2-Me-4-OMe TG. On the solid only the dye neutral species is observed and its Φf is 0.31 ± 0.10, which is approximately thirty times higher than the value found for the neutral species in aqueous solution (Φf = 0.01). 2-Me-4-OMe TG and Dabcyl (DB) were co-adsorbed on the surface of microcrystalline cellulose to study the transfer of excitation energy from the former to the latter. In the absence of the dye, the formation of DB aggregates is observed at concentrations greater than 0.34 μmol per gram of cellulose, while in the presence of 2-Me-4-OMe TG the formation of DB aggregates is thoroughly inhibited. The quenching of fluorescence of 2-Me-4-OMe TG by DB reaches efficiencies as high as 90% for the most concentrated samples.
Fil: López, Sergio G.. Universidad de Granada; España
Fil: Crovetto, Luis. Universidad de Granada; España
Fil: Álvarez Pez, José M.. Universidad de Granada; España
Fil: Talavera, Eva M.. Universidad de Granada; España
Fil: San Roman, Enrique Arnoldo. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Química, Física de los Materiales, Medioambiente y Energía. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Química, Física de los Materiales, Medioambiente y Energía; Argentina
Materia
FOTOFISICA
SOLIDOS
FLUORESCENCIA
TRANSFERENCIA DE ENERGIA
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/31727
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/31727
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repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Fluorescence enhancement of a fluorescein derivative upon adsorption on celluloseLópez, Sergio G.Crovetto, LuisÁlvarez Pez, José M.Talavera, Eva M.San Roman, Enrique ArnoldoFOTOFISICASOLIDOSFLUORESCENCIATRANSFERENCIA DE ENERGIAhttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/19-[1-(2-Methyl-4-methoxyphenyl)]-6-hydroxy-3H-xanthen-3-one (2-Me-4-OMe TG) is a fluorescein derivative dye whose photophysical properties show a remarkable pH dependence. In aqueous solution the fluorescence quantum yield (Φf) of its anionic species is nearly a hundred times higher than that of its neutral species. Such a large difference in Φf makes 2-Me-4-OMe TG useful as an “on–off” pH indicator. Here we report that adsorption on the surface of microcrystalline cellulose exerts a profound effect upon the photophysical properties of 2-Me-4-OMe TG. On the solid only the dye neutral species is observed and its Φf is 0.31 ± 0.10, which is approximately thirty times higher than the value found for the neutral species in aqueous solution (Φf = 0.01). 2-Me-4-OMe TG and Dabcyl (DB) were co-adsorbed on the surface of microcrystalline cellulose to study the transfer of excitation energy from the former to the latter. In the absence of the dye, the formation of DB aggregates is observed at concentrations greater than 0.34 μmol per gram of cellulose, while in the presence of 2-Me-4-OMe TG the formation of DB aggregates is thoroughly inhibited. The quenching of fluorescence of 2-Me-4-OMe TG by DB reaches efficiencies as high as 90% for the most concentrated samples.Fil: López, Sergio G.. Universidad de Granada; EspañaFil: Crovetto, Luis. Universidad de Granada; EspañaFil: Álvarez Pez, José M.. Universidad de Granada; EspañaFil: Talavera, Eva M.. Universidad de Granada; EspañaFil: San Roman, Enrique Arnoldo. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Química, Física de los Materiales, Medioambiente y Energía. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Química, Física de los Materiales, Medioambiente y Energía; ArgentinaRoyal Society of Chemistry2014-06info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/31727San Roman, Enrique Arnoldo; Talavera, Eva M.; López, Sergio G.; Crovetto, Luis; Álvarez Pez, José M.; Fluorescence enhancement of a fluorescein derivative upon adsorption on cellulose; Royal Society of Chemistry; Photochemical and Photobiological Sciences; 13; 9; 6-2014; 1311-13201474-905XCONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1039/c4pp00150hinfo:eu-repo/semantics/altIdentifier/url/http://pubs.rsc.org/en/Content/ArticleLanding/2014/PP/C4PP00150H#!divAbstractinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-17T11:23:35Zoai:ri.conicet.gov.ar:11336/31727instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-17 11:23:35.959CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Fluorescence enhancement of a fluorescein derivative upon adsorption on cellulose
title Fluorescence enhancement of a fluorescein derivative upon adsorption on cellulose
spellingShingle Fluorescence enhancement of a fluorescein derivative upon adsorption on cellulose
López, Sergio G.
FOTOFISICA
SOLIDOS
FLUORESCENCIA
TRANSFERENCIA DE ENERGIA
title_short Fluorescence enhancement of a fluorescein derivative upon adsorption on cellulose
title_full Fluorescence enhancement of a fluorescein derivative upon adsorption on cellulose
title_fullStr Fluorescence enhancement of a fluorescein derivative upon adsorption on cellulose
title_full_unstemmed Fluorescence enhancement of a fluorescein derivative upon adsorption on cellulose
title_sort Fluorescence enhancement of a fluorescein derivative upon adsorption on cellulose
dc.creator.none.fl_str_mv López, Sergio G.
Crovetto, Luis
Álvarez Pez, José M.
Talavera, Eva M.
San Roman, Enrique Arnoldo
author López, Sergio G.
author_facet López, Sergio G.
Crovetto, Luis
Álvarez Pez, José M.
Talavera, Eva M.
San Roman, Enrique Arnoldo
author_role author
author2 Crovetto, Luis
Álvarez Pez, José M.
Talavera, Eva M.
San Roman, Enrique Arnoldo
author2_role author
author
author
author
dc.subject.none.fl_str_mv FOTOFISICA
SOLIDOS
FLUORESCENCIA
TRANSFERENCIA DE ENERGIA
topic FOTOFISICA
SOLIDOS
FLUORESCENCIA
TRANSFERENCIA DE ENERGIA
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.4
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv 9-[1-(2-Methyl-4-methoxyphenyl)]-6-hydroxy-3H-xanthen-3-one (2-Me-4-OMe TG) is a fluorescein derivative dye whose photophysical properties show a remarkable pH dependence. In aqueous solution the fluorescence quantum yield (Φf) of its anionic species is nearly a hundred times higher than that of its neutral species. Such a large difference in Φf makes 2-Me-4-OMe TG useful as an “on–off” pH indicator. Here we report that adsorption on the surface of microcrystalline cellulose exerts a profound effect upon the photophysical properties of 2-Me-4-OMe TG. On the solid only the dye neutral species is observed and its Φf is 0.31 ± 0.10, which is approximately thirty times higher than the value found for the neutral species in aqueous solution (Φf = 0.01). 2-Me-4-OMe TG and Dabcyl (DB) were co-adsorbed on the surface of microcrystalline cellulose to study the transfer of excitation energy from the former to the latter. In the absence of the dye, the formation of DB aggregates is observed at concentrations greater than 0.34 μmol per gram of cellulose, while in the presence of 2-Me-4-OMe TG the formation of DB aggregates is thoroughly inhibited. The quenching of fluorescence of 2-Me-4-OMe TG by DB reaches efficiencies as high as 90% for the most concentrated samples.
Fil: López, Sergio G.. Universidad de Granada; España
Fil: Crovetto, Luis. Universidad de Granada; España
Fil: Álvarez Pez, José M.. Universidad de Granada; España
Fil: Talavera, Eva M.. Universidad de Granada; España
Fil: San Roman, Enrique Arnoldo. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Química, Física de los Materiales, Medioambiente y Energía. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Química, Física de los Materiales, Medioambiente y Energía; Argentina
description 9-[1-(2-Methyl-4-methoxyphenyl)]-6-hydroxy-3H-xanthen-3-one (2-Me-4-OMe TG) is a fluorescein derivative dye whose photophysical properties show a remarkable pH dependence. In aqueous solution the fluorescence quantum yield (Φf) of its anionic species is nearly a hundred times higher than that of its neutral species. Such a large difference in Φf makes 2-Me-4-OMe TG useful as an “on–off” pH indicator. Here we report that adsorption on the surface of microcrystalline cellulose exerts a profound effect upon the photophysical properties of 2-Me-4-OMe TG. On the solid only the dye neutral species is observed and its Φf is 0.31 ± 0.10, which is approximately thirty times higher than the value found for the neutral species in aqueous solution (Φf = 0.01). 2-Me-4-OMe TG and Dabcyl (DB) were co-adsorbed on the surface of microcrystalline cellulose to study the transfer of excitation energy from the former to the latter. In the absence of the dye, the formation of DB aggregates is observed at concentrations greater than 0.34 μmol per gram of cellulose, while in the presence of 2-Me-4-OMe TG the formation of DB aggregates is thoroughly inhibited. The quenching of fluorescence of 2-Me-4-OMe TG by DB reaches efficiencies as high as 90% for the most concentrated samples.
publishDate 2014
dc.date.none.fl_str_mv 2014-06
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/31727
San Roman, Enrique Arnoldo; Talavera, Eva M.; López, Sergio G.; Crovetto, Luis; Álvarez Pez, José M.; Fluorescence enhancement of a fluorescein derivative upon adsorption on cellulose; Royal Society of Chemistry; Photochemical and Photobiological Sciences; 13; 9; 6-2014; 1311-1320
1474-905X
CONICET Digital
CONICET
url http://hdl.handle.net/11336/31727
identifier_str_mv San Roman, Enrique Arnoldo; Talavera, Eva M.; López, Sergio G.; Crovetto, Luis; Álvarez Pez, José M.; Fluorescence enhancement of a fluorescein derivative upon adsorption on cellulose; Royal Society of Chemistry; Photochemical and Photobiological Sciences; 13; 9; 6-2014; 1311-1320
1474-905X
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1039/c4pp00150h
info:eu-repo/semantics/altIdentifier/url/http://pubs.rsc.org/en/Content/ArticleLanding/2014/PP/C4PP00150H#!divAbstract
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Royal Society of Chemistry
publisher.none.fl_str_mv Royal Society of Chemistry
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.000565

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