Intense White Molecular Fluorescence from Naphthoxazole-Quinoline Derivatives

Renzo P. Zanocco, Silvana Valdebenito, Yasser Gidi, Gerald Zapata-Torres, Else Lemp, Santi Nonell*, Antonio L. Zanocco

*Autor correspondiente de este trabajo

Producción científica: Artículo en revista indizadaArtículorevisión exhaustiva

2 Citas (Scopus)

Resumen

Naphthoxazole derivatives are small heterocyclic compounds endowed with outstanding fluorescence properties. In this work, we report a detailed study of the intense white light fluorescence observed in naphthoxazole-quinoline dyads in solvent mixtures including at least a strong hydrogen bonding solvent. The same phenomenon was also studied in inclusion complexes naphthoxazole derivatives—sulfonated-βCD either in aqueous solution as well as in solid phase. A novel mechanism of white molecular fluorescence generation based on solvent-to-fluorophore proton transfer facilitated by ground state hydrogen bonding was characterized. The emission combines both, a blue charge transfer fluorescence emitted by the locally excited singlet state along with a red-shifted emission from a proton transfer complex.

Idioma originalInglés
Páginas (desde-hasta)1092-1099
Número de páginas8
PublicaciónPhotochemistry and Photobiology
Volumen94
N.º6
DOI
EstadoPublicada - nov 2018

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