Hydrogen bond in liquid water as a Brownian oscillator
We present the first experimental observation of a vibrational dynamic Stokes shift. This dynamic Stokes shift is observed in a femtosecond pump-probe study on the OH-stretch vibration of HDO dissolved in D2O. We find that the Stokes shift has a value of approximately 70 cm – 1 and occurs with a time constant of approximately 500 femtoseconds. The measurements can be accurately described by modeling the hydrogen bond in liquid water as a Brownian oscillator.
|Journal||Phys. Rev. Lett.|
Woutersen, S, & Bakker, H.J. (1999). Hydrogen bond in liquid water as a Brownian oscillator. Phys.Rev.Lett., 83, 2077–2080.