CIOP 05384
CENTRO DE INVESTIGACIONES OPTICAS
Unidad Ejecutora - UE
artículos
Título:
Photophysical behavior of new acridine(1,8)dione dyes
Autor/es:
R. CABANZO HERNáNDEZ; ; P. D. GARA, ; D. MOLINA VELASCO, ; G. M. BILMES,; ERRA BALSELLS, ROSA
Revista:
Photochemical and Photobiological Sciences
Editorial:
ROYAL SOC CHEMISTRY
Referencias:
Lugar: CAMBRIDGE; Año: 2013 vol. 12 p. 1968 - 1975
ISSN:
1474-905X
Resumen:
The photophysical behavior
of five acridine(1,8)dione dyes of biological interest was studied by using absorption and fluorescence spectroscopy, photoacoustics
and time resolved phosphorescence techniques. Results obtained in ethanol and acetonitrile solutions show that the main spectroscopic and
photophysical parameters of these compounds depend strongly on both the solvent and the oxygen concentration. Oxygen
completely quenched the triplet state of all dyes. In nitrogen-saturated
solutions quantum efficiencies of triplet formation were higher in ethanol than
in acetonitrile. We propose that Octahydro-ã-piridyl-acridine-1,8-dione in
ethanol can be used as a calorimetric reference
