Ultrafast X-ray measurements of the glass-like, high-frequency stiffness of aqueous solutions

Literature Information

Publication Date 2017-07-12
DOI 10.1039/C7CP02747H
Impact Factor 3.676
Authors

Yishuo Jiao, Bernhard Adams, Christoph Rose-Petruck


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Abstract

The ultrafast dynamics of the domains surrounding solutes in aqueous solution were measured using laser-generating GHz phonons inside of 30 mM ferrocyanide solutions and the resulting molecular motions of the solutes and their hydrogen-bonded solvation shells were detected using ultrafast X-ray absorption spectroscopy (UXAS). The measurements of the phonon dynamics around the solutes showed that the domains had a glass-like stiffness on a timescale of tens of picoseconds.

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