Resum
(Chemical Equation Presented) The photophysics and photochemistry of a series of naphthoxazinones have been studied using a combination of methods ranging from steady-state and time-resolved spectroscopic techniques to product analysis. The photophysics of naphthoxazinone derivatives is very dependent on the structure: phenanthrene-like compounds exhibit higher fluorescence quantum yield than the less aromatic anthracene-like homologous. The latter, exhibit a substantial degree of charge transfer in the excited singlet state. These compounds are fairly photostable in the absence of additives, yielding a single photoproduct arising from the triplet state. The presence of electron donors such as amines increases the photoconsumption quantum yield and changes the product distribution, the primary photoproduct being a dihydronaphthoxazinone that photoreacts further yielding ultimately an oxazoline derivative.
Idioma original | Anglès |
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Pàgines (de-a) | 5371-5378 |
Nombre de pàgines | 8 |
Revista | Journal of Organic Chemistry |
Volum | 73 |
Número | 14 |
DOIs | |
Estat de la publicació | Publicada - 18 de jul. 2008 |