States of Water Located in the Continuous Organic Phase of 1-Butyl-3-methylimidazolium Tetrafluoroborate/Triton X-100/Triethylamine Reverse Microemulsions
✍ Scribed by Na Li; Quan Cao; Yanan Gao; Jin Zhang; Liqiang Zheng; Xiangtao Bai; Bin Dong; Zhen Li; Mingwei Zhao; Li Yu
- Publisher
- John Wiley and Sons
- Year
- 2007
- Tongue
- English
- Weight
- 376 KB
- Volume
- 8
- Category
- Article
- ISSN
- 1439-4235
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✦ Synopsis
Abstract
We demonstrate a novel ionic liquid (IL) microemulsion, consisting of 1‐butyl‐3‐methylimidazolium tetrafluoroborate (bmimBF~4~) and nonionic surfactant Triton X‐100 prepared in triethylamine which is used either as an organic solvent or a Lewis base. The effects of small amounts of added water on the microstructure of the IL microemulsion are investigated by various techniques. UV/Vis spectroscopic analysis and FTIR spectra indicate that these water molecules are not solubilized into the IL pools of the microemulsions. ^1^H NMR spectra further show that the added water binds with triethylamine to form a surrounding OH^−^ base environment. Some of OH^−^ ions enter the palisade layers of the IL microemulsions and a continuous base interface is created. The unique solubilization behavior of water reveals that it is possible to use the triethylamine microemulsions as a template to prepare metal hydroxides as well as metal oxides in the microemulsions, which is not possible when using traditional microemulsions.