Departamento de Química Física y Centro Singular de Investigación en Química Biológica y Materiales Moleculares, Universidad de Santiago, 15782 Santiago, Spain.
J Colloid Interface Sci. 2011 Nov 1;363(1):261-7. doi: 10.1016/j.jcis.2011.06.066. Epub 2011 Jul 19.
Ionic liquid based microemulsions were characterized by absorption solvatochromic shifts, (1)H NMR and kinetic measurements in order to investigate the properties of the ionic liquid within the restricted geometry provided by microemulsions and the interactions of the ionic liquid with the interface. Experimental results show a significant difference between the interfaces of normal water and the new ionic liquid microemulsions. Absorption solvatochromic shift experiments and kinetic studies on the aminolysis of 4-nitrophenyl laurate by n-decylamine show that the polarity at the interface of the ionic liquid in oil microemulsions (IL/O) is higher than at the interface of water in oil microemulsions (W/O) despite the fact that the polarity of [bmim][BF(4)(-)] is lower than the polarity of water. (1)H NMR experiments showed that an increase in the ionic liquid content of the microemulsion led to an increase in the interaction between [bmim][BF(4)(-)] and TX-100. The reason for the higher polarity of the microemulsions with the ionic liquid can be explained in terms of the incorporation of higher levels of the ionic liquid at the interface of the microemulsions, as compared to water in the traditional systems.
离子液体基微乳液的性质通过吸收溶剂化位移、（1）H NMR 和动力学测量进行了表征，以研究微乳液提供的受限几何形状内离子液体的性质以及离子液体与界面的相互作用。实验结果表明，正常水和新型离子液体微乳液之间的界面存在显著差异。吸收溶剂化位移实验和动力学研究表明，尽管[bmim][BF(4)(-)]的极性低于水的极性，但油包水微乳液（IL/O）中离子液体界面的极性高于油包水微乳液（W/O）中离子液体界面的极性。（1）H NMR 实验表明，随着微乳液中离子液体含量的增加，[bmim][BF(4)(-)]与 TX-100 之间的相互作用增强。与传统体系中的水相比，离子液体在微乳液界面上的含量更高，这可以解释微乳液极性较高的原因。
