Photophysics and photochemistry of naphthoxazinone derivatives

Santi Nonell, Lourdes R. Ferreras, Alvaro Cañete, Else Lemp, German Günther, Nancy Pizarro, Antonio L. Zanocco

Resultado de la investigación: Contribución a una revistaArtículorevisión exhaustiva

17 Citas (Scopus)

Resumen

(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 originalInglés
Páginas (desde-hasta)5371-5378
Número de páginas8
PublicaciónJournal of Organic Chemistry
Volumen73
N.º14
DOI
EstadoPublicada - 18 jul. 2008

Áreas temáticas de ASJC Scopus

  • Química orgánica

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