Central Salt and Marine Chemicals Research Institute, Council of Scientific & Industrial Research (CSIR), G. B. Marg, Bhavnagar-364002, Gujarat, India.
Langmuir. 2011 Aug 2;27(15):9261-9. doi: 10.1021/la201695a. Epub 2011 Jul 11.
Micelle-vesicle-micelle (MVM) transitions are observed in the aqueous-mixed ionic liquid (1-butyl-3-methylimidazolium octyl sulfate and 3-methyl-1-octylimidazolium chloride) system. The surface activity of mixed ILs, phase behavior, and solution structures in the system have been thoroughly characterized using conductometry, tensiometry, fluorimetry, dynamic light scattering (DLS), viscometry, turbidity, atomic force microscopy (AFM), transmission electron microscopy (TEM), and (1)H NMR techniques. Synergetic interactions between the two ILs in monolayers at the air/water interface and in micelles/vesicles have been determined using the regular solution approach, and the origins of spontaneous vesicle formation in this novel system are discussed. Using a photoreduction method, the formation of stable gold nanoparticles (GNPs) and microscale nanosheets of different shapes and sizes in the micellar and vesicle solutions has been reported. The studies show the potential of a mixed IL system in constructing stable micelles/supramolecular assemblies, such as bilayer vesicles, which are effective in the preparation of the desired nanomaterials.
在水混合离子液体（1-丁基-3-甲基咪唑硫酸辛酯和 3-甲基-1-辛基咪唑氯化物）体系中观察到胶束-囊泡-胶束（MVM）转变。使用电导率法、张力计、荧光法、动态光散射（DLS）、粘度计、浊度计、原子力显微镜（AFM）、透射电子显微镜（TEM）和（1）H NMR 技术彻底表征了混合 IL 的表面活性、相行为和溶液结构。使用正则溶液方法确定了在空气/水界面的单层和胶束/囊泡中的两种 IL 之间的协同相互作用，并讨论了在该新体系中自发囊泡形成的原因。使用光还原法，报道了在胶束和囊泡溶液中形成稳定的金纳米颗粒（GNPs）和不同形状和尺寸的微尺度纳米片。研究表明，混合 IL 体系在构建稳定的胶束/超分子组装体（如双层囊泡）方面具有潜力，这对于制备所需的纳米材料是有效的。
