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.
复制标题

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
复制
发表时间:
2013
期刊:
The journal of physical chemistry. B
影响因子:
--
通讯作者:
E. Pines
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

文献摘要

参考文献

被引文献

相似文献

1-萘酚分子由于其在光激发下作为光酸的复杂行为,在过去的60年中一直是激烈的研究活动的主题。利用飞秒中红外光谱和时间分辨荧光光谱研究了1-萘酚-3,6-二磺酸盐(1 N-3,6 diS)与几种5-取代1-萘酚衍生物的激发态质子转移反应.发现1 N-3,6-diS的质子解离速率常数比文献中先前报道的值快约3倍,并且pKa* 比文献中先前报道的值酸性高约2个pKa单位。激发态质子解离速率常数与激发态光酸平衡常数Ka* 的Marcus(自由能)图使用C-5系列的1-萘酚衍生物构建。发现1 N-3,6diS的ESPT速率常数和pKa* 的新测量值与Marcus相关性很好地拟合。我们讨论了我们的研究结果的背景下,一般的光酸现象,特别是1-萘酚及其衍生物的光酸。
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.
直接测量扩散控制反应中的固有质子转移速率
DOI: --
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: --
发表时间: 1949
期刊: Die Naturwissenschaften
影响因子: --
作者:
Th. Förster
通讯作者: Th. Förster
DOI: --
发表时间: 2004
期刊:
影响因子: --
作者:
A. Kuznetsov;J. Ulstrup
通讯作者: J. Ulstrup
DOI: --
发表时间: 1972
期刊:
影响因子: --
作者:
J. Rosenberg;I. Brinn
通讯作者: I. Brinn
1-萘酚在水中激发态质子转移反应的皮秒动力学
DOI: --
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