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dc.contributor.author
Wetzler, Diana Elena
dc.contributor.author
García Fresnadillo, David
dc.contributor.author
Orellana, Guillermo
dc.date.available
2018-03-19T15:09:01Z
dc.date.issued
2006-12
dc.identifier.citation
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
dc.identifier.issn
1463-9076
dc.identifier.uri
http://hdl.handle.net/11336/39186
dc.description.abstract
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.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Royal Society of Chemistry
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Oxygen Singlet
dc.subject
Photosensitized
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Solid Reference
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1o2 Production
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Otras Ciencias Químicas
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Ciencias Químicas
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CIENCIAS NATURALES Y EXACTAS
dc.title
A clean, well-defined solid system for photosensitized 1O 2 production measurements
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2018-03-15T15:22:03Z
dc.identifier.eissn
1463-9084
dc.journal.volume
8
dc.journal.number
19
dc.journal.pagination
2249-2256
dc.journal.pais
Reino Unido
dc.journal.ciudad
Cambridge
dc.description.fil
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
dc.description.fil
Fil: García Fresnadillo, David. Universidad Complutense de Madrid; España
dc.description.fil
Fil: Orellana, Guillermo. Universidad Complutense de Madrid; España
dc.journal.title
Physical Chemistry Chemical Physics
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://pubs.rsc.org/en/content/articlelanding/2006/cp/b517756a
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1039/B517756A
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