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States of Water Located in the Continuous Organic Phase of 1‐Butyl‐3‐methylimidazolium Tetrafluoroborate/Triton X‐100/Triethylamine Reverse Microemulsions
Author(s) -
Li Na,
Cao Quan,
Gao Yanan,
Zhang Jin,
Zheng Liqiang,
Bai Xiangtao,
Dong Bin,
Li Zhen,
Zhao Mingwei,
Yu Li
Publication year - 2007
Publication title -
chemphyschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.016
H-Index - 140
eISSN - 1439-7641
pISSN - 1439-4235
DOI - 10.1002/cphc.200700382
Subject(s) - microemulsion , triethylamine , tetrafluoroborate , chemistry , ionic liquid , pulmonary surfactant , solvent , inorganic chemistry , organic chemistry , catalysis , biochemistry
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.