Transient absorption of vibrationally excited water
Transient absorption of vibrationally excited water
复制标题
振动激发水的瞬态吸收
DOI：
10.1063/1.1432687
复制
发表时间：
2002
影响因子：
4.4
通讯作者：
S. Bratos
中科院分区：
文献类型：
--
作者：
H. Bakker;H. Nienhuys;G. Gallot;N. Lascoux;G. Gale;J. Leicknam;S. Bratos
利用双色飞秒中红外光谱研究了溶解在液态D2 O中的HDO分子的O-H伸缩振动的第一和第二激发态之间的跃迁光谱响应。该跃迁的光谱响应与O-H伸缩振动的基本吸收光谱有很大不同。此外，O-H伸缩振动的激发被观察到导致液态水的氢键动力学的变化。我们表明，这两个观察可以描述与一个精致的量子力学版本的Lippincott-Schroeder模型的氢键OH-O系统。
We study the spectral response of the transition between the first and the second excited state of the O–H stretch vibration of HDO dissolved in liquid D2O with two-color femtosecond mid-infrared spectroscopy. The spectral response of this transition differs strongly from the fundamental absorption spectrum of the O–H stretch vibration. In addition, excitation of the O–H stretch vibration is observed to lead to a change of the hydrogen-bond dynamics of liquid water. We show that both these observations can be described with a refined quantum-mechanical version of the Lippincott–Schroeder model for hydrogen-bonded OH⋯O systems.