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Experimental and theoretical radiative lifetimes for some β-carboline derivatives

✍ Scribed by A. Pardo; D. Reyman; J.M.L. Poyato; E. Martin; J.J. Camacho

Book ID
103991654
Publisher
Elsevier Science
Year
1988
Tongue
English
Weight
504 KB
Volume
45
Category
Article
ISSN
1010-6030

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✦ Synopsis

The photophysical properties (absorption and fluorescence spectra, quantum yields and fluorescence lifetimes) for neutral and cationic species of seven /3-carboline derivatives were studied in ethanol solution.

The ratio between experimental and theoretical radiative lifetimes was obtained. These values suggest that there is a configurational change between the ground state and the excited state. The ApK values obtained from the Foster-Weller cycle corroborate this interpretation. The photophysical behaviour of these derivatives can also be explained in terms of the curves obtained by plotting energy us. the j3-carboline ringproton distance.

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