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Photophysics of Lumichrome and Its Analogs

Sikorska E., Worrall D., Bourdelande J., Sikorski M.

Polish Journal of Chemistry

2003

Vol. 77 / nr 1

65-73

The spectroscopic and photophysical properties of lumichrome and its 1- and 3-methyl and 1,3-dimethyl derivatives in acetonitrile and in methanol are presented. In common with the parent molecule, the photophysics of the lumichrome methyl derivatives are dominated by non-radiative transitions in both methanol and acetonitrile. However, fluorescence yields in methanol are higher than in acetonitrile as a result of a reduction in the efficiency of non-radiative deactivation channels. These observations are discussed in terms of the available solvent-solute interactions.