Ultrafast dynamics of interfacial water
2014
We survey the dynamics of the interfacial water at the air/water interface. We reveal that the ultrafast vibrational energy transfer dynamics and spectral diffusion of the OH stretch mode at the interface differs from those in the bulk significantly; the rotational motion is 3 times faster than in the bulk and energy relaxation is dominated by the rotational dynamics as well as the vibrational energy transfer from the free OH group to the H-bonded OH groups of a water molecule with the free OH group. These insights can only be obtained by conducting the time-resolved surface-specific spectroscopic studies presented in this thesis.
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