NDLI: Local structures of water in 1-butyl-3-methylimidazolium tetrafluoroborate probed by high-pressure infrared spectroscopy.

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Local structures of water in 1-butyl-3-methylimidazolium tetrafluoroborate probed by high-pressure infrared spectroscopy.

Content Provider	Semantic Scholar
Author	Chang, Hai-Chou Jiang, Jyh-Chiang Liou, You-Chang Hung, Chao-Hsin Lai, Ting-Yun Lin, S. H.
Copyright Year	2008
Abstract	We have investigated the aggregation behaviors of water molecules in 1-butyl-3-methylimidazolium tetrafluoroborate/water mixtures using high-pressure methods. Under ambient pressure, the IR spectra indicate that two types of O-H species: free O-H and bonded O-H, existing in ionic liquid/water mixtures. As samples were compressed, a continuous loss of the free O-H band intensity was observed. This observation may have arisen from changes in the local structures of water molecules, and the geometrical properties of the hydrogen-bond network are likely to be perturbed as the pressure is elevated. A complementary insight of the O-H spectral features is obtained by measuring the concentration-dependent variation in the mid-infrared spectra under high pressure. A sharp O-H stretching band was observed in a diluted mixture corresponding to the high order in an ice VII-like structure. Nevertheless, a very broad O-H feature was measured in a concentrated mixture, which may be attributed to the presence of more than one stable cluster.
Starting Page	4911
Ending Page	4917
Page Count	7
File Format	PDF HTM / HTML
Alternate Webpage(s)	https://ir.nctu.edu.tw/bitstream/11536/8307/1/000260318100016.pdf
PubMed reference number	18845891v1
Volume Number	24
Issue Number	10
Journal	Analytical sciences : the international journal of the Japan Society for Analytical Chemistry
Language	English
Access Restriction	Open
Subject Keyword	1-butyl-3-methylimidazolium tetrafluoroborate Anion Exchange Protein 1, Erythrocyte Behavior Concentrate Dosage Form mixture
Content Type	Text
Resource Type	Article

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