National Synchrotron Light Source Seminar

"Water as a solvent: structure and dynamics of simple water solutions."

Presented by Simone DePanfilis, Museo Storico della Fisica e Centro Studi e Ricerche “E. Fermi”.

Friday, September 30, 2011, 9:30 am — Seminar Room, Bldg. 725

The hydration structure and thermodynamics of simple and complex polar or non-polar entities in water is central to a molecular understanding of many biological and chemical processes, including protein folding and the self-assembly of micelles or membranes. The peculiar interaction of water with solutes stems from the molecular nature of the solvent itself. Thus, to understand the water-induced conformational and behavioural changes in macromolecules, or the water power as solvent of ionic species, one has to study not only the effects of water on the solutes but also the reverse, i.e. the modified behaviour of water in the vicinity of these entities.
Within this framework, we carried out several experiments on water solutions of simple molecules that made use of advanced x-ray and neutron techniques. We will present the results of these experimental campaigns and comment on our findings.

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