Spectroscopy and dynamics of excited-state intramolecular proton-transfer reaction in 5-hydroxyflavone
作者： Pi-Tai Chou , Youn-Chan Chen , Wei-Shan Yu , Yi-Ming Cheng
DOI: 10.1016/S0009-2614(01)00399-2
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摘要: Abstract Spectroscopy and dynamics of excited-state intramolecular proton-transfer (ESIPT) in 5-hydroxyflavone (5HF) have been investigated. In cyclohexane dual fluorescence maxima at ∼420 700 nm were observed. The time scale for both proton deuterium transfer the excited state cannot be resolved under response ca. 160 fs our femtosecond upconversion system. Following ESIPT keto-tautomer undergoes an unusually fast relaxation rate ∼1.2 ps −1 . Fast internal conversion is concluded to play a major role account dominant radiationless deactivation.
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sci-hub.se 参考文章(27)
F. M. Dean, Naturally Occurring Oxygen Ring Compounds ,(1963)
Pradeep K. Sengupta, Michael Kasha, Excited state proton-transfer spectroscopy of 3-hydroxyflavone and quercetin Chemical Physics Letters. ,vol. 68, pp. 382- 385 ,(1979) , 10.1016/0009-2614(79)87221-8
Dale McMorrow, Michael Kasha, Intramolecular excited-state proton transfer in 3-hydroxyflavone. Hydrogen-bonding solvent perturbations The Journal of Physical Chemistry. ,vol. 88, pp. 2235- 2243 ,(1984) , 10.1021/J150655A012
Marty L. Martinez, Shannon L. Studer, Pi Tai Chou, Direct evidence of the excited-state intramolecular proton transfer in 5-hydroxyflavone Journal of the American Chemical Society. ,vol. 113, pp. 5881- 5883 ,(1991) , 10.1021/JA00015A063
S. J. Strickler, Robert A. Berg, Relationship between Absorption Intensity and Fluorescence Lifetime of Molecules The Journal of Chemical Physics. ,vol. 37, pp. 814- 822 ,(1962) , 10.1063/1.1733166
Javier Catalán, Juan Carlos Del Valle, Cristina Díaz, Jose Palomar, Jose L. G. De Paz, Michael Kasha, Solvatochromism of fluorophores with an intramolecular hydrogen bond and their use as probes in biomolecular cavity sites International Journal of Quantum Chemistry. ,vol. 72, pp. 421- 438 ,(1999) , 10.1002/(SICI)1097-461X(1999)72:4<421::AID-QUA26>3.0.CO;2-3
T. Fiebig, M. Chachisvilis, A.H. Manger, Zewail, A. Douhal, I. García-Ochoa, A. de la Hoz, Femtosecond Dynamics of Double Proton Transfer in a Model DNA Base Pair: 7-Azaindole Dimers in the Condensed Phase Journal of Physical Chemistry A. ,vol. 103, pp. 7419- 7431 ,(1999) , 10.1021/JP991822P
T. C. Swinney, D. F. Kelley, Proton transfer dynamics in substituted 3‐hydroxyflavones: Solvent polarization effects Journal of Chemical Physics. ,vol. 99, pp. 211- 221 ,(1993) , 10.1063/1.465799
M. Wiechmann, H. Port, W. Frey, F. Laermer, T. Elsaesser, Time-resolved spectroscopy on ultrafast proton transfer in 2-(2'-hydroxy-5'-methylphenyl)benzotriazole in liquid and polymer environments The Journal of Physical Chemistry. ,vol. 95, pp. 1918- 1923 ,(1991) , 10.1021/J100158A008
Paul F. Barbara, Patrick K. Walsh, Louis E. Brus, Picosecond kinetic and vibrationally resolved spectroscopic studies of intramolecular excited-state hydrogen atom transfer The Journal of Physical Chemistry. ,vol. 93, pp. 29- 34 ,(1989) , 10.1021/J100338A011