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Excited-state dynamics of the intramolecular proton transfer of 3-hydroxyflavone in the absence of external hydrogen-bonding interactions

✍ Scribed by Dale McMorrow; Thomas P. Dzugan; Thijs J. Aartsma

Publisher: Elsevier Science
Year: 1984
Tongue: English
Weight: 452 KB
Volume: 103
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(84)85284-7

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✦ Synopsis

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 other reports is attributed to hydrogen-bond@ solvent impuritks which inhibit the intramolecular proton transfer ptoass.

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