Critical behavior of charge-regulated macro-ions
| Autor: | David Andelman, Rudolf Podgornik, Yael Avni |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Chemical Physics (physics.chem-ph)
Materials science Statistical Mechanics (cond-mat.stat-mech) 010304 chemical physics FOS: Physical sciences General Physics and Astronomy Electrolyte Condensed Matter - Soft Condensed Matter 010402 general chemistry 01 natural sciences Dissociation (chemistry) 0104 chemical sciences Ion Condensed Matter::Soft Condensed Matter Chemical physics Physics - Chemical Physics Critical micelle concentration 0103 physical sciences Soft Condensed Matter (cond-mat.soft) Physical and Theoretical Chemistry Condensed Matter - Statistical Mechanics |
| Zdroj: | The Journal of Chemical Physics. 153:024901 |
| ISSN: | 1089-7690 0021-9606 |
| DOI: | 10.1063/5.0011623 |
| Popis: | 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/dissociation sites. We demonstrate that above a critical concentration of salt, and 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. Comment: 12 pages, 7 figures |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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