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http://hdl.handle.net/10316/5099
Title: | On the photophysical behaviour of 4-halo-5-phenylisoxazoles | Authors: | Fonseca, Sofia M. Burrows, Hugh D. Nunes, Cláudio M. Melo, Teresa M. V. D. Pinho e Gonsalves, António M. d'A. Rocha |
Issue Date: | 2005 | Citation: | Chemical Physics Letters. 414:1-3 (2005) 98-101 | Abstract: | Detailed spectral and photophysical properties of 4-halo-5-phenylisoxazoles in cyclohexane solutions are presented, including measurements of energies of lowest excited singlet and triplet states, fluorescence quantum yields, lifetimes, phosphorescence and triplet-singlet difference absorption spectra. Upon addition of ethanol, loss of vibrational structure is observed in fluorescence spectra and attributed to formation of isoxazole-ethanol aggregates. The relevance of these properties to the photochemical and thermal reactivity of these systems is discussed. | URI: | http://hdl.handle.net/10316/5099 | DOI: | 10.1016/j.cplett.2005.08.056 | Rights: | openAccess |
Appears in Collections: | FCTUC Química - Artigos em Revistas Internacionais |
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file93827f236afe45d68ad0109a5de21a3b.pdf | 191.35 kB | Adobe PDF | View/Open |
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