Ultrafast excited-state proton-transfer reaction of 1-naphthol-3,6-disulfonate and several 5-substituted 1-naphthol derivatives.
Ultrafast excited-state proton-transfer reaction of 1-naphthol-3,6-disulfonate and several 5-substituted 1-naphthol derivatives.
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1-萘酚-3,6-二磺酸酯和几种5-取代1-萘酚衍生物的超快激发态质子转移反应
DOI:
10.1021/jp308746x
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发表时间:
2013
期刊:
影响因子:
--
通讯作者:
E. Pines
中科院分区:
文献类型:
--
作者:
M. Prémont-Schwarz;T. Barak;D. Pines;E. T. J. Nibbering;E. Pines
The 1-naphthol molecule has been the subject of intense research activity for the past 60 years due to its complex behavior as a photoacid upon optical excitation. We have utilized femtosecond mid-infrared spectroscopy and time-resolved fluorescence spectroscopy to investigate the excited-state proton-transfer reaction of 1-naphthol-3,6-disulfonate (1N-3,6diS) and several 5-substituted 1-naphthol derivatives. The proton dissociation rate constant of 1N-3,6-diS was found to be about 3 times faster and the pKa* about 2 pKaunits more acidic than the values previously reported in the literature. A Marcus (free-energy) plot of excited-state proton dissociation rate constants vs the excited-state equilibrium constant of the photoacids,Ka*, was constructed using the C-5 series of 1-naphthol derivatives. The newly measured values for the ESPT rate constant and pKa* of 1N-3,6diS was found to fit well with the Marcus correlation. We discuss our findings in the context of the photoacidity phenomenon in general, and the photoacidity of 1-naphthol and its derivatives in particular.
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DOI:
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发表时间:
1997
期刊:
影响因子:
--
作者:
E. Pines;Ben;M. Lang;G. Fleming
通讯作者:
G. Fleming
DOI:
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发表时间:
1949
期刊:
Die Naturwissenschaften
影响因子:
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作者:
Th. Förster
通讯作者:
Th. Förster
DOI:
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发表时间:
2004
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作者:
A. Kuznetsov;J. Ulstrup
通讯作者:
J. Ulstrup
DOI:
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发表时间:
1972
期刊:
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作者:
J. Rosenberg;I. Brinn
通讯作者:
I. Brinn
DOI:
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发表时间:
1986
期刊:
影响因子:
--
作者:
S. Webb;L. Philips;S. Yeh;L. Tolbert;J. Clark
通讯作者:
J. Clark