ArticleProceedings of the National Academy of Sciences of the United States of America2014
Water-mediated ion-ion interactions are enhanced at the water vapor-liquid interface.
Article in Proceedings of the National Academy of Sciences of the United States of America, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.
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Who cites it
11 citing papers in PubMed, 89 citations in OpenAlex.
- Breaking the Air-Water Paradigm: Ion Behavior at Hydrophobic Solid-Water Interfaces.Journal of the American Chemical Society · 2026Article
- Perspectives on Molecular Mechanisms of Hydrate Formation and Growth at Interfaces: A Mini-Review.Energy & fuels : an American Chemical Society journal · 2025Review
- The molecular basis for the increased stability of the FUS-LC fibril at the anionic membrane- and air-water interfaces.Chemical science · 2024Article
- Tuning Acid-Base Chemistry at an Electrified Gold/Water Interface.Journal of the American Chemical Society · 2024Article
- On the mechanisms of ion adsorption to aqueous interfaces: air-water vs. oil-water.Proceedings of the National Academy of Sciences of the United States of America · 2022Article
- Variable Interfacial Water Nanosized Arrangements Measured by Atomic Force Microscopy.ACS omega · 2022Article
- Image-charge effects on ion adsorption near aqueous interfaces.Proceedings of the National Academy of Sciences of the United States of America · 2021Article
- Tunable Coacervation of Well-Defined Homologous Polyanions and Polycations by Local Polarity.ACS central science · 2019Article
- Shifted equilibria of organic acids and bases in the aqueous surface region.Physical chemistry chemical physics : PCCP · 2018Article
- Necessity of capillary modes in a minimal model of nanoscale hydrophobic solvation.Proceedings of the National Academy of Sciences of the United States of America · 2016Article
- Long-ranged contributions to solvation free energies from theory and short-ranged models.Proceedings of the National Academy of Sciences of the United States of America · 2016Article
Corrections and comments
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Authors and funding
3 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
There is overwhelming evidence that ions are present near the vapor-liquid interface of aqueous salt solutions. Charged groups can also be driven to interfaces by attaching them to hydrophobic moieties. Despite their importance in many self-assembly phenomena, how ion-ion interactions are affected by interfaces is not understood. We use molecular simulations to show that the effective forces between small ions change character dramatically near the water vapor-liquid interface. Specifically, the water-mediated attraction between oppositely charged ions is enhanced relative to that in bulk water. Further, the repulsion between like-charged ions is weaker than that expected from a continuum dielectric description and can even become attractive as the ions are drawn to the vapor side. We show that thermodynamics of ion association are governed by a delicate balance of ion hydration, interfacial tension, and restriction of capillary fluctuations at the interface, leading to nonintuitive phenomena, such as water-mediated like charge attraction. "Sticky" electrostatic interactions may have important consequences on biomolecular structure, assembly, and aggregation at soft liquid interfaces. We demonstrate this by studying an interfacially active model peptide that changes its structure from α-helical to a hairpin-turn-like one in response to charging of its ends.
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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.