A clean, well-defined solid system for photosensitized 1O 2 production measurements

Autores
Wetzler, Diana Elena; García Fresnadillo, David; Orellana, Guillermo
Año de publicación
2006
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Generation of singlet molecular oxygen (1O2) by photosensitization with methylene blue (MB) supported in Nafion®-Na films has been quantified by integration of the 1O2 emission decay at 1270 nm. The quantum yield of 1O2 production (ΦΔ) in the air-equilibrated solid phase is 0.24 ± 0.03. Information on the 1O2 generation environment has been gained from complementary techniques such as UV-Vis absorption and emission spectroscopy, as well as MB fluorescence and triplet-triplet absorption decay. Results are compared with the 1O2 generation by MB in methanol solution (ΦΔ = 0.51) and in methanol-swollen Nafion® films (ΦΔ = 0.49 ± 0.06). Differences and similarities are discussed in terms of the factors that influence ΦΔ in solution and in the solid media. The optical and mechanical features of Nafion®, ease of dye loading, compatibility with most solvents, homogeneity, reproducibility and stability of the photosensitizing material makes it a convenient reference for 1O2 generation quantum yield measurements in transparent (micro)heterogeneous and homogeneous media.
Fil: Wetzler, Diana Elena. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Bioquímicas de Buenos Aires. Fundación Instituto Leloir. Instituto de Investigaciones Bioquímicas de Buenos Aires; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Química Biológica de la Facultad de Ciencias Exactas y Naturales. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Química Biológica de la Facultad de Ciencias Exactas y Naturales; Argentina. Universidad Complutense de Madrid; España
Fil: García Fresnadillo, David. Universidad Complutense de Madrid; España
Fil: Orellana, Guillermo. Universidad Complutense de Madrid; España
Materia
Oxygen Singlet
Photosensitized
Solid Reference
1o2 Production
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:11336/39186
Acceder
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network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling A clean, well-defined solid system for photosensitized 1O 2 production measurementsWetzler, Diana ElenaGarcía Fresnadillo, DavidOrellana, GuillermoOxygen SingletPhotosensitizedSolid Reference1o2 Productionhttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1Generation of singlet molecular oxygen (1O2) by photosensitization with methylene blue (MB) supported in Nafion®-Na films has been quantified by integration of the 1O2 emission decay at 1270 nm. The quantum yield of 1O2 production (ΦΔ) in the air-equilibrated solid phase is 0.24 ± 0.03. Information on the 1O2 generation environment has been gained from complementary techniques such as UV-Vis absorption and emission spectroscopy, as well as MB fluorescence and triplet-triplet absorption decay. Results are compared with the 1O2 generation by MB in methanol solution (ΦΔ = 0.51) and in methanol-swollen Nafion® films (ΦΔ = 0.49 ± 0.06). Differences and similarities are discussed in terms of the factors that influence ΦΔ in solution and in the solid media. The optical and mechanical features of Nafion®, ease of dye loading, compatibility with most solvents, homogeneity, reproducibility and stability of the photosensitizing material makes it a convenient reference for 1O2 generation quantum yield measurements in transparent (micro)heterogeneous and homogeneous media.Fil: Wetzler, Diana Elena. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Bioquímicas de Buenos Aires. Fundación Instituto Leloir. Instituto de Investigaciones Bioquímicas de Buenos Aires; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Química Biológica de la Facultad de Ciencias Exactas y Naturales. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Química Biológica de la Facultad de Ciencias Exactas y Naturales; Argentina. Universidad Complutense de Madrid; EspañaFil: García Fresnadillo, David. Universidad Complutense de Madrid; EspañaFil: Orellana, Guillermo. Universidad Complutense de Madrid; EspañaRoyal Society of Chemistry2006-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/39186Wetzler, Diana Elena; García Fresnadillo, David; Orellana, Guillermo; A clean, well-defined solid system for photosensitized 1O 2 production measurements; Royal Society of Chemistry; Physical Chemistry Chemical Physics; 8; 19; 12-2006; 2249-22561463-90761463-9084CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://pubs.rsc.org/en/content/articlelanding/2006/cp/b517756ainfo:eu-repo/semantics/altIdentifier/doi/10.1039/B517756Ainfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T14:52:36Zoai:ri.conicet.gov.ar:11336/39186instacron: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 14:52:36.582CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv A clean, well-defined solid system for photosensitized 1O 2 production measurements
title A clean, well-defined solid system for photosensitized 1O 2 production measurements
spellingShingle A clean, well-defined solid system for photosensitized 1O 2 production measurements
Wetzler, Diana Elena
Oxygen Singlet
Photosensitized
Solid Reference
1o2 Production
title_short A clean, well-defined solid system for photosensitized 1O 2 production measurements
title_full A clean, well-defined solid system for photosensitized 1O 2 production measurements
title_fullStr A clean, well-defined solid system for photosensitized 1O 2 production measurements
title_full_unstemmed A clean, well-defined solid system for photosensitized 1O 2 production measurements
title_sort A clean, well-defined solid system for photosensitized 1O 2 production measurements
dc.creator.none.fl_str_mv Wetzler, Diana Elena
García Fresnadillo, David
Orellana, Guillermo
author Wetzler, Diana Elena
author_facet Wetzler, Diana Elena
García Fresnadillo, David
Orellana, Guillermo
author_role author
author2 García Fresnadillo, David
Orellana, Guillermo
author2_role author
author
dc.subject.none.fl_str_mv Oxygen Singlet
Photosensitized
Solid Reference
1o2 Production
topic Oxygen Singlet
Photosensitized
Solid Reference
1o2 Production
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.4
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Generation of singlet molecular oxygen (1O2) by photosensitization with methylene blue (MB) supported in Nafion®-Na films has been quantified by integration of the 1O2 emission decay at 1270 nm. The quantum yield of 1O2 production (ΦΔ) in the air-equilibrated solid phase is 0.24 ± 0.03. Information on the 1O2 generation environment has been gained from complementary techniques such as UV-Vis absorption and emission spectroscopy, as well as MB fluorescence and triplet-triplet absorption decay. Results are compared with the 1O2 generation by MB in methanol solution (ΦΔ = 0.51) and in methanol-swollen Nafion® films (ΦΔ = 0.49 ± 0.06). Differences and similarities are discussed in terms of the factors that influence ΦΔ in solution and in the solid media. The optical and mechanical features of Nafion®, ease of dye loading, compatibility with most solvents, homogeneity, reproducibility and stability of the photosensitizing material makes it a convenient reference for 1O2 generation quantum yield measurements in transparent (micro)heterogeneous and homogeneous media.
Fil: Wetzler, Diana Elena. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Bioquímicas de Buenos Aires. Fundación Instituto Leloir. Instituto de Investigaciones Bioquímicas de Buenos Aires; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Química Biológica de la Facultad de Ciencias Exactas y Naturales. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Química Biológica de la Facultad de Ciencias Exactas y Naturales; Argentina. Universidad Complutense de Madrid; España
Fil: García Fresnadillo, David. Universidad Complutense de Madrid; España
Fil: Orellana, Guillermo. Universidad Complutense de Madrid; España
description Generation of singlet molecular oxygen (1O2) by photosensitization with methylene blue (MB) supported in Nafion®-Na films has been quantified by integration of the 1O2 emission decay at 1270 nm. The quantum yield of 1O2 production (ΦΔ) in the air-equilibrated solid phase is 0.24 ± 0.03. Information on the 1O2 generation environment has been gained from complementary techniques such as UV-Vis absorption and emission spectroscopy, as well as MB fluorescence and triplet-triplet absorption decay. Results are compared with the 1O2 generation by MB in methanol solution (ΦΔ = 0.51) and in methanol-swollen Nafion® films (ΦΔ = 0.49 ± 0.06). Differences and similarities are discussed in terms of the factors that influence ΦΔ in solution and in the solid media. The optical and mechanical features of Nafion®, ease of dye loading, compatibility with most solvents, homogeneity, reproducibility and stability of the photosensitizing material makes it a convenient reference for 1O2 generation quantum yield measurements in transparent (micro)heterogeneous and homogeneous media.
publishDate 2006
dc.date.none.fl_str_mv 2006-12
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/11336/39186
Wetzler, Diana Elena; García Fresnadillo, David; Orellana, Guillermo; A clean, well-defined solid system for photosensitized 1O 2 production measurements; Royal Society of Chemistry; Physical Chemistry Chemical Physics; 8; 19; 12-2006; 2249-2256
1463-9076
1463-9084
CONICET Digital
CONICET
url http://hdl.handle.net/11336/39186
identifier_str_mv Wetzler, Diana Elena; García Fresnadillo, David; Orellana, Guillermo; A clean, well-defined solid system for photosensitized 1O 2 production measurements; Royal Society of Chemistry; Physical Chemistry Chemical Physics; 8; 19; 12-2006; 2249-2256
1463-9076
1463-9084
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://pubs.rsc.org/en/content/articlelanding/2006/cp/b517756a
info:eu-repo/semantics/altIdentifier/doi/10.1039/B517756A
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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