Critical behavior of charge-regulated macro-ions

The Journal of Chemical Physics
Yael AvniDavid Andelman

Abstract

Based on a collective description of electrolytes composed of charge-regulated macro-ions and simple salt ions, we analyze their equilibrium charge state in the bulk and their behavior in the vicinity of an external electrified surface. The mean-field formulation of mobile macro-ions in an electrolyte bathing solution is extended to include interactions between association and dissociation sites. We demonstrate that above a critical concentration of salt, similar to the critical micelle concentration, a non-trivial distribution of charge states sets in. Such a charge state can eventually lead to a liquid-liquid phase separation based on charge regulation.

References

Mar 11, 2004·The European Physical Journal. E, Soft Matter·R R Netz, H Orland
Jun 14, 2006·Langmuir : the ACS Journal of Surfaces and Colloids·Mónica RosaBjörn Lindman
Jun 21, 2006·The Journal of Chemical Physics·Daniel HarriesDavid Andelman
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Dec 15, 2019·Advances in Colloid and Interface Science·Alexander M SmithGregor Trefalt

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Citations

Feb 21, 2021·The Journal of Chemical Physics·Daniel Alejandro GomezYan Levin
Jun 4, 2021·The Journal of Physical Chemistry. B·Dmitrii E Makarov, Hagen Hofmann
Jul 8, 2021·The Journal of Physical Chemistry. B·Bin ZhengRudolf Podgornik
Aug 14, 2020·Langmuir : the ACS Journal of Surfaces and Colloids·Lea FinkUri Raviv

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