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Combined Raman Scattering and X-ray Diffraction Study of Phase Transition of the Ionic Liquid [BMIM][TFSI] Under High Pressure
Wu J.; X. Zhu; H. Li; L. Su; K. Yang; X. Cheng; G. Yang; J. Liu; Liu J(刘景)
2015
发表期刊Journal of Solution Chemistry
卷号44期号:10页码:2106-2116
摘要In situ solidification of 1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ([BMIM][TFSI]) from melt has been investigated by using a diamond anvil cell under pressures up to about 6.0 GPa at room temperature. The results indicate that non-monotonic pressure induced Raman shifts and variation of the full width at half-maximum are suggestive of a phase transition at about 1.8 GPa upon compression, which was further confirmed to be a phase transition from liquid to a superpressurized glass by line broadening measurements of the sharp R (1) ruby fluorescence line and synchrotron X-ray diffraction measurements. The conformational changes of C (1) and C (2) conformers of the [TFSI] anion under high pressure are discussed; the C (2) conformers are predominant under high pressures. In addition, the Raman spectra of [BMIM][TFSI] under different conditions are compared in detail. The results show that the structure of the glassy state at low temperature is different from that of the high pressure state, while the glassy state is mainly composed of C (2) anion conformers, which is similar to the high pressure state.
文章类型Article
关键词Ionic liquid Raman spectra High pressure Phase transition Conformational change
学科领域Chemistry
DOI10.1007/s10953-015-0393-2
收录类别SCI
WOS类目Chemistry, Physical
WOS记录号WOS:000363051800010
引用统计
被引频次:6[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/228968
专题多学科研究中心
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GB/T 7714
Wu J.,X. Zhu,H. Li,et al. Combined Raman Scattering and X-ray Diffraction Study of Phase Transition of the Ionic Liquid [BMIM][TFSI] Under High Pressure[J]. Journal of Solution Chemistry,2015,44(10):2106-2116.
APA Wu J..,X. Zhu.,H. Li.,L. Su.,K. Yang.,...&刘景.(2015).Combined Raman Scattering and X-ray Diffraction Study of Phase Transition of the Ionic Liquid [BMIM][TFSI] Under High Pressure.Journal of Solution Chemistry,44(10),2106-2116.
MLA Wu J.,et al."Combined Raman Scattering and X-ray Diffraction Study of Phase Transition of the Ionic Liquid [BMIM][TFSI] Under High Pressure".Journal of Solution Chemistry 44.10(2015):2106-2116.
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