Journal
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
Volume 13, Issue 34, Pages 15523-15529Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c1cp21057b
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Funding
- Agence Nationale de la Recherche [ANR-10-JCJC-0802]
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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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