2017-04-07
Communication: Slow proton-charge diffusion in nanoconfined water
Publication
Publication
J. Chem. Phys. , Volume 146 - Issue 13, Article number: 131101 p. 1- 5
We investigate proton-charge mobility in nanoscopic water droplets with tuneable size. We find that the diffusion of confined proton charges causes a dielectric relaxation process with a maximumloss frequency determined by the diffusion constant. In volumes less than similar to 5 nm in diameter, proton-charge diffusion slows down significantly with decreasing size: for diameters < 1 nm, the diffusion constant is about 100 times smaller than in bulk water. The low mobility probably results from the more rigid hydrogen-bond network of nanoconfined water, since proton-charge mobility in water relies on collective hydrogen-bond rearrangements.
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| NWO | |
| AIP | |
| doi.org/10.1063/1.4979714 | |
| J. Chem. Phys. | |
| Organisation | Ultrafast Spectroscopy |
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van der Loop, T., Ottosson, N., Vad, T., Sager, W., Bakker, H., & Woutersen, S. (2017). Communication: Slow proton-charge diffusion in nanoconfined water. J. Chem. Phys., 146(13, Article number: 131101), 1–5. doi:10.1063/1.4979714 |
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