Dynamics of Long-Distance Hydrogen-Bond Networks in Photosystem II

Hydrogen bond dynamics in aqueous NaBr solutions.

Hydrogen bond dynamics of water in NaBr solutions are studied by using ultrafast 2D IR vibrational echo spectroscopy and polarization-selective IR pump-probe experiments. The hydrogen bond structural dynamics are observed by measuring spectral diffusion of the OD stretching mode of dilute HOD in H(2)O in a series of high concentration aqueous NaBr solutions with 2D IR vibrational echo spectrosc...

Hydrogen Bond Dynamics in Alcohol Clusters

Effect of environment on hydrogen bond dynamics in liquid water.

It is generally accepted that the distinctive properties of water can be ascribed to hydrogen bonding [1]. The fundamental dynamical process of the liquid is the making and breaking of hydrogen bonds. This dynamics, however, is far from being completely understood. Experiments such as infrared absorption and Raman scattering [2], depolarized light scattering [3], and inelastic neutron scatterin...

Spectroscopic Investigations of Hydrogen Bond Dynamics in Liquid Water

Many of the remarkable physical and chemical properties of liquid water are due to the strong influence hydrogen bonds have on its microscopic dynamics. However, because of the fast timescales involved, there are relatively few experimental techniques capable of directly probing rearrangements of water’s hydrogen bonded network. In this thesis, I investigate ultrafast intermolecular dynamics of...

Anomalies of water and hydrogen bond dynamics in hydrophobic nanoconfinement.

Using molecular dynamic (MD) simulations of the TIP5P model of water, we investigate the effect of hydrophobic confinement on the anomalies of liquid water. For confinement length Lz = 1.1 nm, such that there are 2-3 molecular layers of water, we find the presence of the bulk-like density and diffusion anomaly in the lateral directions. However, the lines of these anomalies in the P-T plane are...