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The intermolecular rotational-to-translational energy transfer is greatly enhanced by highly charged cations and drastically reduced by highly charged anions, increasing with ion surface charge density and ion concentrations, improving with the ion surface charge density and ion concentration. The water-titu2013water hydrogen-bond strength between the first and second solvation shells of cations increases, while it decreases around anions. Our molecular dynamics simulations reveal that the wateru2013water hydrogen bond strength between the first and second solvation shells of cations increases. The opposite effects of cations and anions on water's intermolecular interactions mimic the protein stabilization and denaturation of proteins. In salt solutions, Ions in salt solutions disrupt the hydrogen bonding between the surrounding water molecules, altering the properties of water, but how ion polarity is affected is unclear. It has now been shown that intermolecular rotational-to-translational energy transfer is boosted by highly charged cations and reduced by heavily charged anions by monitoring the dissipation of terahertz energy in salt solutions.
Source link: https://doi.org/10.1038/s41557-022-00977-2
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