文献类型：期刊文献

英文题名：Structural rearrangement in the aqueous solution of surface active ionic liquid 1-butyl-3-methylimidazolium bis(2-ethylhexyl) sulfosuccinate

作者：Yin, Tianxiang[1];Wu, Jiequn[1];Wang, Shuzhen[1];Shen, Weiguo[1,2]

机构：[1]E China Univ Sci & Technol, Sch Chem & Mol Engn, Shanghai 200237, Peoples R China;[2]Lanzhou Univ, Dept Chem, Lanzhou 730000, Gansu, Peoples R China

年份：2015

卷号：11

期号：23

起止页码：4717

外文期刊名：SOFT MATTER

收录：;EI(收录号：20152400937588);WOS:【SCI-EXPANDED(收录号:WOS:000355735900020)】；

基金：This work was supported by the National Natural Science Foundation of China (Projects 21173080, 21373085 and 21303055) and the Fundamental Research Funds for the Central Universities (No. WJ1516001).

语种：英文

外文关键词：Solutions - Ionic liquids - Nuclear magnetic resonance - Dynamic light scattering - High resolution transmission electron microscopy - Agglomeration - Nuclear magnetic resonance spectroscopy

摘要：The aggregation behaviors of surface active ionic liquid 1-butyl-3-methylimidazolium bis(2-ethylhexyl) sulfosuccinate in aqueous solutions were investigated by conductometry, densimetry, fluorimetry, H-1 nuclear magnetic resonance (H-1 NMR) spectroscopy, dynamic light scattering (DLS), and transmission electron microscopy (TEM), which confirmed two distinguished critical concentrations. The first critical concentration was believed to be the critical aggregation concentration (CAC), where two different types of aggregates were formed, namely, micelles with the size of 10 nm and vesicles with the size of 100 nm. The second critical concentration at two-fold CAC was suggested to be resulting from the insertion of the imidazolium cations into aggregates.