Designing a New Strategy for the Formation of IL-in-Oil Microemulsions

Abstract

Due to the increasing applicability of ionic liquids (ILs) as different components of microemulsions (as the polar liquid, the oil phase, and the surfactant), it would be advantageous to devise a strategy by which we can formulate a microemulsion of our own interest. In this paper, we have shown how we can replace water from water-in-oil microemulsions by ILs to produce IL-in-oil microemulsions. We have synthesized AOT-derived surface-active ionic liquids (SAILs) which can be used to produce a large number of IL-in-oil microemulsions. In particular, we have characterized the phase diagram of the [C(4)mim][BF(4)]/[C(4)mim][AOT]/benzene ternary system at 298 K. We have shown the formation of IL-in-oil microemulsions using the dynamic light scattering (DLS) technique and using methyl orange (MO), betaine 30, and coumarin-480 (C-480) as probe molecules.

The effect of water on the microstructure and properties of benzene/[bmim][AOT]/[bmim][BF4] microemulsions

“…The ionic surfactant [bmim][AOT] was prepared according to the literature. 45 Benzene (quality, AR) was purchased from Tianjin Kemel Chemical Reagent Corporation. IL [bmim] [BF 4 ] was synthesized by the quaternization of 1-methylimidazole with 1-bromobutane.…”

“…15 To date, almost all research on the self-assembly of surfactants in ILs has exclusively focused on using nonionic surfactants, like Triton X-100, Tween 20 and Brij 30. 26 44,45 We noted that the phase behavior of both microemulsions has many features in common with the corresponding aqueous systems. Different from the Triton X-100 system, their microemulsion size falls into the normal range, i.e.…”

5-Methyl Salicylic Acid-Induced Thermo Responsive Reversible Transition in Surface Active Ionic Liquid Assemblies: A Spectroscopic Approach

“…[26][27][28][29][30][31][32][33][34][35] These properties of SAILs influence to formulate various types of nanoaggregates that can be utilized in industrial or pharmaceutical purposes. There are few reports regarding the vesicle formation using imidazolium-based SAILs.…”

Studies on formation and percolation in ionic liquids/TX-100/water microemulsions

“…This second application is probably a more promising option from green chemistry point of view (excludes the use of volatile organic solvents as a nonpolar part of microemulsions), however most of the publications characterize mainly nonaqueous systems, and their number is still increasing [25][26][27][28][29].…”