AI Article Synopsis
- Research studied the self-aggregation of ionic liquids with ibuprofenate anions and imidazolium cations in water using various techniques like interfacial tension and NMR self-diffusion.
- The ionic liquids showed very low Critical Aggregation Concentrations (CAC), which are much lower than those of their related chloride salts.
- This low CAC is believed to result from the formation of catanionic pairs between the ibuprofenate and imidazolium, indicating strong interactions despite short alkyl chains.
Article Abstract
Interfacial tension, electrical conductivity, NMR self-diffusion and DLS experiments have been used to investigate the self-aggregation in water of ionic liquids associating an ibuprofenate anion and 1-alkyl-3-methylimidazolium [C(n)MIm](+) (n = 4, 6, 8) cations. Despite the short alkyl chain on imidazolium cations (n ≤ 8), these ionic liquids exhibit particularly low Critical Aggregation Concentrations (CAC), significantly lower than their parent 1-alkyl-3-methylimidazolium chloride salts. This behaviour is attributed to the formation of catanionic pairs between ibuprofenate and imidazolium.
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| http://dx.doi.org/10.1039/c1cp21057b | DOI Listing |
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