Like-charge attraction at the nanoscale: Ground-state correlations and water destructuring

Palaia I, Goyal A, Del Gado E, Šamaj L, Trizac E. 2022. Like-charge attraction at the nanoscale: Ground-state correlations and water destructuring. Journal of Physical Chemistry B. 126(16), 3143–3149.


Journal Article | Published | English

Scopus indexed
Author
Palaia, IvanISTA; Goyal, Abhay; Del Gado, Emanuela; Šamaj, Ladislav; Trizac, Emmanuel
Department
Abstract
Like-charge attraction, driven by ionic correlations, challenges our understanding of electrostatics both in soft and hard matter. For two charged planar surfaces confining counterions and water, we prove that, even at relatively low correlation strength, the relevant physics is the ground-state one, oblivious of fluctuations. Based on this, we derive a simple and accurate interaction pressure that fulfills known exact requirements and can be used as an effective potential. We test this equation against implicit-solvent Monte Carlo simulations and against explicit-solvent simulations of cement and several types of clays. We argue that water destructuring under nanometric confinement drastically reduces dielectric screening, enhancing ionic correlations. Our equation of state at reduced permittivity therefore explains the exotic attractive regime reported for these materials, even in the absence of multivalent counterions.
Publishing Year
Date Published
2022-04-14
Journal Title
Journal of Physical Chemistry B
Acknowledgement
We thank Martin Trulsson for useful discussions and for providing us with simulation data. This work has received funding from the European Union’s Horizon 2020 research and innovation programme under the Marie Sklodowska-Curie grant agreement 674979-NANOTRANS. The support received from VEGA Grant No. 2/0092/21 is acknowledged.
Volume
126
Issue
16
Page
3143-3149
ISSN
eISSN
IST-REx-ID

Cite this

Palaia I, Goyal A, Del Gado E, Šamaj L, Trizac E. Like-charge attraction at the nanoscale: Ground-state correlations and water destructuring. Journal of Physical Chemistry B. 2022;126(16):3143-3149. doi:10.1021/acs.jpcb.2c00028
Palaia, I., Goyal, A., Del Gado, E., Šamaj, L., & Trizac, E. (2022). Like-charge attraction at the nanoscale: Ground-state correlations and water destructuring. Journal of Physical Chemistry B. American Chemical Society. https://doi.org/10.1021/acs.jpcb.2c00028
Palaia, Ivan, Abhay Goyal, Emanuela Del Gado, Ladislav Šamaj, and Emmanuel Trizac. “Like-Charge Attraction at the Nanoscale: Ground-State Correlations and Water Destructuring.” Journal of Physical Chemistry B. American Chemical Society, 2022. https://doi.org/10.1021/acs.jpcb.2c00028.
I. Palaia, A. Goyal, E. Del Gado, L. Šamaj, and E. Trizac, “Like-charge attraction at the nanoscale: Ground-state correlations and water destructuring,” Journal of Physical Chemistry B, vol. 126, no. 16. American Chemical Society, pp. 3143–3149, 2022.
Palaia I, Goyal A, Del Gado E, Šamaj L, Trizac E. 2022. Like-charge attraction at the nanoscale: Ground-state correlations and water destructuring. Journal of Physical Chemistry B. 126(16), 3143–3149.
Palaia, Ivan, et al. “Like-Charge Attraction at the Nanoscale: Ground-State Correlations and Water Destructuring.” Journal of Physical Chemistry B, vol. 126, no. 16, American Chemical Society, 2022, pp. 3143–49, doi:10.1021/acs.jpcb.2c00028.
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