Cation Functionalization Alters Cohesion, Not Interaction Type, in Ionic Liquids: Evidence from Infinite Dilution Activity Coefficients
Kamil Paduszyński, Marta Królikowska · 2026
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Description
Kamil Paduszyński and Marta Królikowska investigate, in 2026, how a small change to an ionic liquid's positive ion alters the way solutes dissolve. Ionic liquids are salts that stay liquid near room temperature and are prized as tunable solvents. The team compared two liquids that share the same negative ion but differ by one oxygen atom in the cation ring.
Using gas-liquid chromatography, they measured behaviour for 34 solutes across a range of temperatures. Adding the oxygen raised activity coefficients, meaning solutes were held less favourably, with the strongest effect for nonpolar compounds. Analysis showed the change raised the overall cost of making a cavity for the solute rather than reordering interaction types. Several modelling approaches supported that reading.
Catalog record
| CREATOR | Kamil Paduszyński, Marta Królikowska |
|---|---|
| YEAR | 2026 |
| COLLECTION | PAPERS |
| FORMAT | TXT |
| FILE SIZE | 77 KB |
| VERSION | 1.0 |
| LICENSE | CC BY 4.0 |
| RIGHTS | CC BY |
| SOURCE | Europe PMC |