Volume 27 Issue 2
Mar 2015
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ZHU Xiang, WANG Yong-Qiang, WANG Zheng, CHENG Xue-Rui, YUAN Chao-Sheng, CHEN Zhen-Ping, SU Lei. Pressure-Induced Phase Transition of [Emim][PF6] and [Bmim][PF6] Studied by Raman Scattering[J]. Chinese Journal of High Pressure Physics, 2013, 27(2): 253-260. doi: 10.11858/gywlxb.2013.02.013
Citation: ZHU Xiang, WANG Yong-Qiang, WANG Zheng, CHENG Xue-Rui, YUAN Chao-Sheng, CHEN Zhen-Ping, SU Lei. Pressure-Induced Phase Transition of [Emim][PF6] and [Bmim][PF6] Studied by Raman Scattering[J]. Chinese Journal of High Pressure Physics, 2013, 27(2): 253-260. doi: 10.11858/gywlxb.2013.02.013

Pressure-Induced Phase Transition of [Emim][PF6] and [Bmim][PF6] Studied by Raman Scattering

doi: 10.11858/gywlxb.2013.02.013
  • Received Date: 21 Oct 2011
  • Rev Recd Date: 03 Mar 2012
  • Publish Date: 15 Apr 2013
  • In-situ pressure-induced phase transition of ionic liquids [Emim][PF6] and [Bmim][PF6] have been studied under high pressure and room temperature by using Raman spectroscopy and high-pressure diamond anvil cell (DAC) apparatus. With the increase of pressure, [Emim][PF6] experiences the solid-solid phase transition at about 0.86 GPa, and [Bmim][PF6] experiences the liquid-solid phase transition at about 0.62 GPa and the solid-solid phase transition at about 1.45 GPa. Furthermore, the decrease of pressure of [Bmim][PF6] has also been discussed in details. Pressure-released Raman spectra shows that the phase transition of [Bmim][PF6] is reversible under pressure up to 2 GPa.

     

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