Vibrational Frequency Fluctuations of Ionic and Non-ionic Vibrational Probe Molecules in Aqueous Solutions

Observing the Fluctuation Dynamics of Dative Bonds Using Two-Dimensional Electronic Spectroscopy

“…Comparing with a recent comprehensive study about the hydrogen bond network in H 2 O, using 2D infrared (2D-IR) spectroscopy to probe the vibrational modes of anionic and neutral species, the spectral diffusion timescales in our study are in relatively good agreement. 26 Together with molecular dynamics simulation, three different spectral diffusion timescales of sub-ps, several ps, and tens of ps were determined. These three timescales were assigned to the different modulations induced by the hydrogen bond network in water.…”