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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.identifier.citationChemical Physics Letters. 387:4-6 (2004) 263-266en_US
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.titlePhotophysics of 3-hydroxyflavone in supercritical CO2: a probe to study the microenvironment of SCFen_US
item.fulltextCom Texto completo-
item.grantfulltextopen- de Ciências e Tecnologia, Universidade de Coimbra- de Ciências e Tecnologia, Universidade de Coimbra- de Ciências e Tecnologia, Universidade de Coimbra- de Coimbra- de Coimbra- de Coimbra- Chemistry Center- Chemistry Center- Chemistry Center-
Appears in Collections:FCTUC Química - Artigos em Revistas Internacionais
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