Please use this identifier to cite or link to this item: http://hdl.handle.net/10316/5141
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dc.contributor.authorChattopadhyay, Nitin-
dc.contributor.authorBarroso, Mónica-
dc.contributor.authorSerpa, Carlos-
dc.contributor.authorIsilda Silva, M.-
dc.contributor.authorArnaut, Luís G.-
dc.contributor.authorFormosinho, Sebastião J.-
dc.date.accessioned2008-09-01T15:04:39Z-
dc.date.available2008-09-01T15:04:39Z-
dc.date.issued2004en_US
dc.identifier.citationChemical Physics Letters. 387:4-6 (2004) 263-266en_US
dc.identifier.urihttp://hdl.handle.net/10316/5141-
dc.description.abstractThe excitation of 3-hydroxyflavone (3HF) to its second excited singlet state (S2) gives rise to dual fluorescence in supercritical carbon dioxide. The ultraviolet fluorescence originated from the S2 state of 3HF is well separated from the green emission emanating from the tautomeric form, produced via the excited state intramolecular proton transfer. The relative intensity of the S2 to the tautomer fluorescence (S2/T) has been studied as a function of pressure and temperature. It is shown that this ratio reflects the microheterogeneity of the supercritical CO2, and confirms the value of fluorometric probes in disclosing the microscopic properties of supercritical fluids.en_US
dc.description.urihttp://www.sciencedirect.com/science/article/B6TFN-4BVP7G9-3/1/02dd61c567fe3e9c8d6ac86a01f79ce2en_US
dc.format.mimetypeaplication/PDFen
dc.language.isoengeng
dc.rightsopenAccesseng
dc.titlePhotophysics of 3-hydroxyflavone in supercritical CO2: a probe to study the microenvironment of SCFen_US
dc.typearticleen_US
item.languageiso639-1en-
item.fulltextCom Texto completo-
item.grantfulltextopen-
Appears in Collections:FCTUC Química - Artigos em Revistas Internacionais
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