@article {2018|2133,
	title = {Water dynamics in concentrated electrolytes: Local ion effect on hydrogen-bond jumps rather than collective coupling to ion clusters},
	journal = {Proc Natl Acad Sci U S A},
	volume = {115},
	year = {2018},
	month = {05},
	pages = {E4953-E4954},
	doi = {10.1073/pnas.1803988115},
	author = {Guillaume Stirnemann and Jungwirth, Pavel and Laage, Damien}
}
@article {2013|1670,
	title = {Mechanisms of acceleration and retardation of water dynamics by ions},
	journal = {J. Am. Chem. Soc.},
	volume = {135},
	year = {2013},
	pages = {11824{\textendash}11831},
	abstract = {<p>There are fundamental and not yet fully resolved questions concerning the impact of solutes, ions in particular, on the structure and dynamics of water, which can be formulated as follows: Are the effects of ions local or long-ranged? Is the action of cations and anions on water cooperative or not? Here, we investigate how the reorientation and hydrogen-bond dynamics of water are affected by ions in dilute and concentrated aqueous salt solutions. By combining simulations and analytic modeling, we first show that ions have a short-ranged influence on the reorientation of individual water molecules and that depending on their interaction strength with water, they may accelerate or slow down water dynamics. A simple additive picture combining the effects of the cations and anions is found to provide a good description in dilute solutions. In concentrated solutions, we show that the average water reorientation time ceases to scale linearly with salt concentration due to overlapping hydration shells and structural rearrangements which reduce the translational displacements induced by hydrogen-bond switches and increase the solution viscosity. This effect is not ion-specific and explains why all concentrated salt solutions slow down water dynamics. Our picture, which is demonstrated to be robust vis-a-vis a change in the force-field, reconciles the seemingly contradictory experimental results obtained by ultrafast infrared and NMR spectroscopies, and suggests that there are no long-ranged cooperative ion effects on the dynamics of individual water molecules in dilute solutions.</p>},
	issn = {00027863},
	author = {Guillaume Stirnemann and Wernersson, Erik and Jungwirth, Pavel and Laage, Damien}
}
