Please use this identifier to cite or link to this item: http://hdl.handle.net/10316/10282
DC FieldValueLanguage
dc.contributor.authorPineiro, Marta-
dc.contributor.authorGonçalves, A. M. d'A. Rocha-
dc.contributor.authorPereira, Mariette M.-
dc.contributor.authorFormosinho, Sebastião J.-
dc.contributor.authorArnaut, Luís G.-
dc.date.accessioned2009-06-23T14:23:55Z-
dc.date.available2009-06-23T14:23:55Z-
dc.date.issued2002-04-18-
dc.identifier.citationThe Journal of Physical Chemistry A. 106:15 (2002) 3787-3795en_US
dc.identifier.issn1089-5639-
dc.identifier.urihttp://hdl.handle.net/10316/10282-
dc.description.abstractHalogenated phenylbacteriochlorins are synthesized with high yields in a two-step procedure. They have strong absorbances in the red and are very stable to air and light at room temperature. Flash photolysis measurements show that the triplet states of these bacteriochlorins have 30 μs lifetimes in deaerated toluene, that are quenched with diffusion-controlled rate constants by molecular oxygen. Time-resolved photoacoustic measurements, with nanosecond and nanocalorie resolution, show that these bacteriochlorins sensitize the formation of singlet oxygen with nearly unity quantum yield. However, singlet-oxygen phosphorescence measurements indicate that physical quenching occurs before the singlet-oxygen molecules diffuse into solution, and nearly half of the sensitized singlet states are lost.en_US
dc.language.isoengen_US
dc.publisherAmerican Chemical Societyen_US
dc.rightsopenAccesseng
dc.titleNew Halogenated Phenylbacteriochlorins and Their Efficiency in Singlet-Oxygen Sensitizationen_US
dc.typearticleen_US
dc.identifier.doi10.1021/jp013678p-
uc.controloAutoridadeSim-
item.languageiso639-1en-
item.fulltextCom Texto completo-
item.grantfulltextopen-
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.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.orcid0000-0002-7460-3758-
crisitem.author.orcid0000-0003-4958-7677-
crisitem.author.orcid0000-0001-6607-0026-
crisitem.author.orcid0000-0002-3223-4819-
Appears in Collections:FCTUC Química - Artigos em Revistas Internacionais
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