Physical Chemistry Chemical Physics 2011-09-14

Surfactant properties of ionic liquids containing short alkyl chain imidazolium cations and ibuprofenate anions.

Corine Tourné-Péteilh, Jean-Marie Devoisselle, André Vioux, Patrick Judeinstein, Martin In, Lydie Viau

文献索引：Phys. Chem. Chem. Phys. 13(34) , 15523-9, (2011)

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摘要

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.This journal is © the Owner Societies 2011