Please use this identifier to cite or link to this item: http://hdl.handle.net/10316/5228
DC FieldValueLanguage
dc.contributor.authorPineiro, Marta-
dc.contributor.authorPereira, Mariette M.-
dc.contributor.authorRocha Gonsalves, A. M. d'A.-
dc.contributor.authorArnaut, Luis G.-
dc.contributor.authorFormosinho, Sebastião J.-
dc.date.accessioned2008-09-01T15:06:08Z-
dc.date.available2008-09-01T15:06:08Z-
dc.date.issued2001en_US
dc.identifier.citationJournal of Photochemistry and Photobiology A: Chemistry. 138:2 (2001) 147-157en_US
dc.identifier.urihttp://hdl.handle.net/10316/5228-
dc.description.abstractFlash photolysis and photoacoustic calorimetry were used to measure the energy-transfer rates and singlet oxygen quantum yields originated by the triplet states of halogenated tetrakisphenylporphyrins and related chlorins in aerated toluene. The chlorins ([lambda]max[approximate]660 nm, [var epsilon][approximate]3×104 M-1 cm-1) have long-lived triplet states (>12 [mu]s) in the absence of molecular oxygen, and in its presence the singlet oxygen production quantum yields of the 2-chloro and 2,6-dichlorophenyl derivatives are 0.89±0.05 and 0.98±0.02, respectively. The high absorptivity in the red, the photostability and the efficiency of these chlorins in producing singlet oxygen suggests a ground for the development of better sensitisers for photodynamic therapy.en_US
dc.description.urihttp://www.sciencedirect.com/science/article/B6TGY-41YG70D-7/1/de6fc7896eaf9c58239551fa798e3e7ben_US
dc.format.mimetypeaplication/PDFen
dc.language.isoengeng
dc.rightsopenAccesseng
dc.subjectPhotoacoustic calorimetryen_US
dc.subjectChlorinen_US
dc.subjectSinglet oxygenen_US
dc.subjectSensitisersen_US
dc.subjectPhotodynamic therapyen_US
dc.titleSinglet oxygen quantum yields from halogenated chlorins: potential new photodynamic therapy agentsen_US
dc.typearticleen_US
dc.identifier.doi10.1016/S1010-6030(00)00382-8-
uc.controloAutoridadeSim-
item.fulltextCom Texto completo-
item.grantfulltextopen-
item.languageiso639-1en-
crisitem.author.deptFaculty of Sciences and Technology-
crisitem.author.deptFaculty of Sciences and Technology-
crisitem.author.deptFaculty of Sciences and Technology-
crisitem.author.deptFaculty of Sciences and Technology-
crisitem.author.deptFaculty of Sciences and Technology-
crisitem.author.parentdeptUniversity of Coimbra-
crisitem.author.parentdeptUniversity of Coimbra-
crisitem.author.parentdeptUniversity of Coimbra-
crisitem.author.parentdeptUniversity of Coimbra-
crisitem.author.parentdeptUniversity of Coimbra-
crisitem.author.researchunitCQC - Coimbra Chemistry Centre-
crisitem.author.researchunitCQC - Coimbra Chemistry Centre-
crisitem.author.researchunitCQC - Coimbra Chemistry Centre-
crisitem.author.researchunitCQC - Coimbra Chemistry Centre-
crisitem.author.researchunitCQC - Coimbra Chemistry Centre-
crisitem.author.parentresearchunitFaculty of Sciences and Technology-
crisitem.author.parentresearchunitFaculty of Sciences and Technology-
crisitem.author.parentresearchunitFaculty of Sciences and Technology-
crisitem.author.parentresearchunitFaculty of Sciences and Technology-
crisitem.author.parentresearchunitFaculty of Sciences and Technology-
crisitem.author.orcid0000-0002-7460-3758-
crisitem.author.orcid0000-0003-4958-7677-
crisitem.author.orcid0000-0001-9987-7301-
crisitem.author.orcid0000-0002-3223-4819-
crisitem.author.orcid0000-0001-6607-0026-
Appears in Collections:FCTUC Química - Artigos em Revistas Internacionais
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