Triplet quantum yields in light-scattering powder samples measured by laser-induced optoacoustic spectroscopy (LIOAS)

Autores
Tomasini, Eugenia Paula; Braslavsky, Silvia E.; San Roman, Enrique Arnoldo
Año de publicación
2012
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
In recent years, different methods and techniques have been applied to study the primary photophysical processes occurring in dye-loaded light-scattering powdered samples. In spite of this, there are still no reliable methods for the determination of triplet quantum yields for this kind of systems. Laser-induced optoacoustic spectroscopy (LIOAS) has been extensively used for the determination of triplet quantum yields of dyes in solution. In a previous work, LIOAS was applied to the measurement of absolute emission quantum yields of highly fluorescent powdered samples. Excellent agreement was found with values obtained from reflectance data. In this work, we apply the same technique for the determination of triplet quantum yields of Rose Bengal and Erythrosine B adsorbed on microcrystalline cellulose. In contrast to water and other solvents, internal conversion cannot be neglected in the cellulose environment. The triplet quantum yield for both dyes is around 0.55 and does not change with dye concentration.
Fil: Tomasini, Eugenia Paula. 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
Fil: Braslavsky, Silvia E.. Institut Max Planck fuer Bioanorganische Chemie; Alemania
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
Laser-Induced Optoaoustic Spectroscopy (Lioas)
Triplet Quantum Yield
Heterogeneous Sistems
Powered Samples
Erythrosine B
Bengal Rose
Microcrystalline Cellulose
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:11336/71338
Acceder
id CONICETDig_6c6290cc68f87b5bbf01aadaa960ed99
oai_identifier_str oai:ri.conicet.gov.ar:11336/71338
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Triplet quantum yields in light-scattering powder samples measured by laser-induced optoacoustic spectroscopy (LIOAS)Tomasini, Eugenia PaulaBraslavsky, Silvia E.San Roman, Enrique ArnoldoLaser-Induced Optoaoustic Spectroscopy (Lioas)Triplet Quantum YieldHeterogeneous SistemsPowered SamplesErythrosine BBengal RoseMicrocrystalline Cellulosehttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1In recent years, different methods and techniques have been applied to study the primary photophysical processes occurring in dye-loaded light-scattering powdered samples. In spite of this, there are still no reliable methods for the determination of triplet quantum yields for this kind of systems. Laser-induced optoacoustic spectroscopy (LIOAS) has been extensively used for the determination of triplet quantum yields of dyes in solution. In a previous work, LIOAS was applied to the measurement of absolute emission quantum yields of highly fluorescent powdered samples. Excellent agreement was found with values obtained from reflectance data. In this work, we apply the same technique for the determination of triplet quantum yields of Rose Bengal and Erythrosine B adsorbed on microcrystalline cellulose. In contrast to water and other solvents, internal conversion cannot be neglected in the cellulose environment. The triplet quantum yield for both dyes is around 0.55 and does not change with dye concentration.Fil: Tomasini, Eugenia Paula. 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; ArgentinaFil: Braslavsky, Silvia E.. Institut Max Planck fuer Bioanorganische Chemie; AlemaniaFil: 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 Chemistry2012-06info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/71338Tomasini, Eugenia Paula; Braslavsky, Silvia E.; San Roman, Enrique Arnoldo; Triplet quantum yields in light-scattering powder samples measured by laser-induced optoacoustic spectroscopy (LIOAS); Royal Society of Chemistry; Photochemical and Photobiological Sciences; 11; 6; 6-2012; 1010-10171474-905XCONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1039/c2pp05362dinfo:eu-repo/semantics/altIdentifier/url/https://pubs.rsc.org/en/Content/ArticleLanding/2012/PP/c2pp05362dinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T14:38:42Zoai:ri.conicet.gov.ar:11336/71338instacron: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:34982025-10-15 14:38:43.297CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Triplet quantum yields in light-scattering powder samples measured by laser-induced optoacoustic spectroscopy (LIOAS)
title Triplet quantum yields in light-scattering powder samples measured by laser-induced optoacoustic spectroscopy (LIOAS)
spellingShingle Triplet quantum yields in light-scattering powder samples measured by laser-induced optoacoustic spectroscopy (LIOAS)
Tomasini, Eugenia Paula
Laser-Induced Optoaoustic Spectroscopy (Lioas)
Triplet Quantum Yield
Heterogeneous Sistems
Powered Samples
Erythrosine B
Bengal Rose
Microcrystalline Cellulose
title_short Triplet quantum yields in light-scattering powder samples measured by laser-induced optoacoustic spectroscopy (LIOAS)
title_full Triplet quantum yields in light-scattering powder samples measured by laser-induced optoacoustic spectroscopy (LIOAS)
title_fullStr Triplet quantum yields in light-scattering powder samples measured by laser-induced optoacoustic spectroscopy (LIOAS)
title_full_unstemmed Triplet quantum yields in light-scattering powder samples measured by laser-induced optoacoustic spectroscopy (LIOAS)
title_sort Triplet quantum yields in light-scattering powder samples measured by laser-induced optoacoustic spectroscopy (LIOAS)
dc.creator.none.fl_str_mv Tomasini, Eugenia Paula
Braslavsky, Silvia E.
San Roman, Enrique Arnoldo
author Tomasini, Eugenia Paula
author_facet Tomasini, Eugenia Paula
Braslavsky, Silvia E.
San Roman, Enrique Arnoldo
author_role author
author2 Braslavsky, Silvia E.
San Roman, Enrique Arnoldo
author2_role author
author
dc.subject.none.fl_str_mv Laser-Induced Optoaoustic Spectroscopy (Lioas)
Triplet Quantum Yield
Heterogeneous Sistems
Powered Samples
Erythrosine B
Bengal Rose
Microcrystalline Cellulose
topic Laser-Induced Optoaoustic Spectroscopy (Lioas)
Triplet Quantum Yield
Heterogeneous Sistems
Powered Samples
Erythrosine B
Bengal Rose
Microcrystalline Cellulose
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.4
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv In recent years, different methods and techniques have been applied to study the primary photophysical processes occurring in dye-loaded light-scattering powdered samples. In spite of this, there are still no reliable methods for the determination of triplet quantum yields for this kind of systems. Laser-induced optoacoustic spectroscopy (LIOAS) has been extensively used for the determination of triplet quantum yields of dyes in solution. In a previous work, LIOAS was applied to the measurement of absolute emission quantum yields of highly fluorescent powdered samples. Excellent agreement was found with values obtained from reflectance data. In this work, we apply the same technique for the determination of triplet quantum yields of Rose Bengal and Erythrosine B adsorbed on microcrystalline cellulose. In contrast to water and other solvents, internal conversion cannot be neglected in the cellulose environment. The triplet quantum yield for both dyes is around 0.55 and does not change with dye concentration.
Fil: Tomasini, Eugenia Paula. 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
Fil: Braslavsky, Silvia E.. Institut Max Planck fuer Bioanorganische Chemie; Alemania
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 In recent years, different methods and techniques have been applied to study the primary photophysical processes occurring in dye-loaded light-scattering powdered samples. In spite of this, there are still no reliable methods for the determination of triplet quantum yields for this kind of systems. Laser-induced optoacoustic spectroscopy (LIOAS) has been extensively used for the determination of triplet quantum yields of dyes in solution. In a previous work, LIOAS was applied to the measurement of absolute emission quantum yields of highly fluorescent powdered samples. Excellent agreement was found with values obtained from reflectance data. In this work, we apply the same technique for the determination of triplet quantum yields of Rose Bengal and Erythrosine B adsorbed on microcrystalline cellulose. In contrast to water and other solvents, internal conversion cannot be neglected in the cellulose environment. The triplet quantum yield for both dyes is around 0.55 and does not change with dye concentration.
publishDate 2012
dc.date.none.fl_str_mv 2012-06
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/11336/71338
Tomasini, Eugenia Paula; Braslavsky, Silvia E.; San Roman, Enrique Arnoldo; Triplet quantum yields in light-scattering powder samples measured by laser-induced optoacoustic spectroscopy (LIOAS); Royal Society of Chemistry; Photochemical and Photobiological Sciences; 11; 6; 6-2012; 1010-1017
1474-905X
CONICET Digital
CONICET
url http://hdl.handle.net/11336/71338
identifier_str_mv Tomasini, Eugenia Paula; Braslavsky, Silvia E.; San Roman, Enrique Arnoldo; Triplet quantum yields in light-scattering powder samples measured by laser-induced optoacoustic spectroscopy (LIOAS); Royal Society of Chemistry; Photochemical and Photobiological Sciences; 11; 6; 6-2012; 1010-1017
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/c2pp05362d
info:eu-repo/semantics/altIdentifier/url/https://pubs.rsc.org/en/Content/ArticleLanding/2012/PP/c2pp05362d
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
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 13.22299

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