Please use this identifier to cite or link to this item: http://hdl.handle.net/10316/10446
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dc.contributor.authorBurrows, Hugh D.-
dc.contributor.authorFernandes, Mariana-
dc.contributor.authorMelo, J. Seixas de-
dc.contributor.authorMonkman, Andrew P.-
dc.contributor.authorNavaratnam, Suppiah-
dc.date.accessioned2009-07-01T14:54:12Z-
dc.date.available2009-07-01T14:54:12Z-
dc.date.issued2003-12-17-
dc.identifier.citationJournal of the American Chemical Society. 125:50 (2003) 15310-15311en_US
dc.identifier.issn0002-7863-
dc.identifier.urihttp://hdl.handle.net/10316/10446-
dc.description.abstractThe lowest triplet state of tris(8-hydroxyquinoline)aluminium(III) (Alq3) has been prepared by pulse radiolysis/energy transfer from appropriate donors in benzene solutions and has an absorption maximum around 510 nm with a lifetime of about 50 μs. It is quenched by molecular oxygen, leading to singlet oxygen formation. From flash photolysis and singlet oxygen formation measurements, a quantum yield of triplet formation of 0.24 was determined for direct photolysis of the complex. A value of 2.10 ± 0.10 eV was determined for the energy of the lowest triplet state by energy transfer studies and was confirmed by phosphorescence measurements on Alq3, either in the heavy atom solvent ethyl iodide or photosensitized by benzophenone in benzene. Dexter (exchange) energy transfer was observed from triplet Alq3 to platinum(II) octaethylporphyrin.en_US
dc.language.isoengen_US
dc.publisherAmerican Chemical Societyen_US
dc.rightsopenAccesseng
dc.titleCharacterization of the Triplet State of Tris(8-hydroxyquinoline)aluminium(III) in Benzene Solutionen_US
dc.typearticleen_US
dc.identifier.doi10.1021/ja037254f-
item.languageiso639-1en-
item.fulltextCom Texto completo-
item.grantfulltextopen-
Appears in Collections:FCTUC Química - Artigos em Revistas Internacionais
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