Reorientational motion and hydrogen-bond stretching dynamics in liquid water
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چکیده
منابع مشابه
Reorientational motion and hydrogen-bond stretching dynamics in liquid water
The reorientational motion of the molecules in liquid water is investigated by measuring the anisotropy decay of the O±H stretching mode of HDO dissolved in D2O using femtosecond mid-infrared pump±probe spectroscopy. We observe that the anisotropy shows a non-exponential decay with an initial fast component of which the amplitude increases with increasing lengths of the O±H O hydrogen bond. The...
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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...
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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...
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We have performed molecular dynamics simulations of liquid water at 298 and 258 K to investigate the effects of hydrogen-bond environment on various single-particle and pair dynamical properties of water molecules at ambient and supercooled conditions. The water molecules are modelled by the extended simple point charge (SPC/E) model. We first calculate the distribution of hydrogen-bond environ...
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To evaluate the relevance of treating the hydrogen bonds in liquid water as a digital (discrete) network and applying topological analyses, a framework to optimize the fitting parameters in various hydrogen bond definitions of liquid water is proposed. Performance of the definitions is quantitatively evaluated according to the reproducibility of hydrogen bonding in the inherent structure. Param...
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ژورنال
عنوان ژورنال: Chemical Physics
سال: 2000
ISSN: 0301-0104
DOI: 10.1016/s0301-0104(00)00134-8