Aqueous electrolyte interfaces with immiscible liquids, have been a topic of significant research for the last two decades. More recently, the instantaneous surface that considers the interfacial layer and its thermally corrugated nature and capillary wave characteristics has been being studied to understand interfacial phenomena. The instantaneous surface can be highly heterogeneous in both the structural organization and dynamic properties and is sensitive to the specific solvents involved, with non-polar organic phases generally being considered. In this work, we examine the role of interfacial heterogeneity upon ion adsorption and further, how this is influenced by a polar solvent relative to a vapor phase analogue. We compare and contrasts the interfacial adsorption of ions in electrolyte/vapor and electrolyte/octanol biphasic systems, focusing upon the changes in interfacial heterogeneity in the presence of the polar solvent and the preferential adsorption to different interfacial regions. The interplay of competing forces introduced by strong octanol water interactions at the interface is examined, with a new understanding of how such competition may lead to tailored interfacial properties.

Specific ion effects at heterogeneous electrolytic interfaces

Macromolecular Chemistry: The Second Century

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ACS Spring 2020 National Meeting & Expo

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.