Abstract
The static and transient fluorescence spectroscopy of 3-hydroxyflavone, 3HF, has been investigated as a function of deuteration of the 3-hydroxy group and the solvent. Small H/D isotope effects are observed for at least two of the simple rate constants for the excited-state dynamics. The isotope effects are not significantly temperature dependent. The results suggest that the proton transfer process is not a simple barrier crossing reaction.
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