On the intramolecular proton transfer of 3-hydroxyflavone in the first singlet excited state: A theoretical study
✍ Scribed by Ricard Casadesús; Oriol Vendrell; Miquel Moreno; José M. Lluch; Keiji Morokuma
- Book ID
- 108088756
- Publisher
- Elsevier Science
- Year
- 2006
- Tongue
- English
- Weight
- 317 KB
- Volume
- 325
- Category
- Article
- ISSN
- 0301-0104
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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 eff
A singk exponential risetime is observed for the tautomcr fluoresccncc of 3-hydroxyflavom in the absence of hydrogcnbonding impuriticsin the temperature range of 298-77 K. The observed risetime in hydrocarbon solvents is Its than 8 ps at 298 K. while at 77 K it is 37 2 6 ps. The disucpnncy with othe