The quantum yields of the photosensitized formation of singlet molecular oxygen from luminescence experiments in benzene solutions of 3,5,7,3',4'-pentamethoxyflavone, 3-hydroxy-5,7,3',4'-tetramethoxyflavone and 5-hydroxy-3,7,3',4'-tetramethoxyflavone were found to be 0.49±0.05 and < 10-2, respectively.
E. A. Venedictov and O. G. Tokareva, Mendeleev Commun., 1997, 7, 84 DOI: 10.1070/MC1997v007n02ABEH000664
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