Successive disorder to disorder phase transitions in ionic liquid [HMIM][BF4] under high pressure
文献类型：期刊论文
| 作者 | Zhu, Xiang1,2; Yuan, Chaosheng2; Li, Haining2; Zhu, Pinwen1; Su, Lei2,3; Yang, Kun2; Wu, Jie2; Yang, Guoqiang3; Liu, Jing4 |
| 刊名 | JOURNAL OF MOLECULAR STRUCTURE
 |
| 出版日期 | 2016-02-15 |
| 卷号 | 1106页码:70-75 |
| 关键词 | Ionic liquid Raman spectroscopy Synchrotron X-ray diffraction |
| 英文摘要 | In situ high-pressure Raman spectroscopy and synchrotron X-ray diffraction have been employed to investigate the phase behavior of ionic liquid, 1-hexyl-3-methylimidazolium tetrafluoroborate ([HMIM] [BF4]) under high pressure up to 20 GPa at room temperature. With increasing pressure, some characteristic bands of (1-HMIM][BF4] disappear, and some characteristic bands of [HMIM][BF4] display non-monotonic pressure-induced frequency shift and non-monotonic variation of full width at half-maximum. Two successive phase transitions at similar to 1.7 GPa and 73 GPa have been corroborated by the results above. The glass transition pressure (P-g) of [HMIM][BF4] at similar to 7.3 GPa has been obtained by ruby R-1 line broadening measurements and analysis of synchrotron X-ray diffraction patterns, and its glass transition mechanism is also analyzed in detail. These facts are suggestive of two successive disorder to disorder phase transitions induced by compression, that is, [HMIM][BF4] serves as a superpressurized glass under the pressure above 73 GPa, which is similar to the glassy state at low temperature, and a compression-induced liquid to liquid phase transition in [HMIM][BF4] occurs at similar to 1.7 GPa. Besides, the conformational equilibrium of the GAAA conformer and AAAA conformer was converted easily in liquid [HMIM][BF4], while it was difficult to be influenced in glassy state. (C) 2015 Elsevier B.V. All rights reserved. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2016-05-09 |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/29579]  |
| 专题 | 化学研究所_光化学实验室 |
| 作者单位 | 1.Jilin Univ, State Key Lab Superhard Mat, Changchun 130012, Peoples R China 2.Zhengzhou Univ Light Ind, High Pressure Res Ctr Sci & Technol, Zhengzhou 450002, Peoples R China 3.Chinese Acad Sci, Inst Chem, Key Lab Photochem, Beijing 100080, Peoples R China 4.Chinese Acad Sci, Inst High Energy Phys, Beijing Synchrotron Radiat Facil, Beijing 100039, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhu, Xiang,Yuan, Chaosheng,Li, Haining,et al. Successive disorder to disorder phase transitions in ionic liquid [HMIM][BF4] under high pressure[J]. JOURNAL OF MOLECULAR STRUCTURE,2016,1106:70-75. |
| APA | Zhu, Xiang.,Yuan, Chaosheng.,Li, Haining.,Zhu, Pinwen.,Su, Lei.,...&Liu, Jing.(2016).Successive disorder to disorder phase transitions in ionic liquid [HMIM][BF4] under high pressure.JOURNAL OF MOLECULAR STRUCTURE,1106,70-75. |
| MLA | Zhu, Xiang,et al."Successive disorder to disorder phase transitions in ionic liquid [HMIM][BF4] under high pressure".JOURNAL OF MOLECULAR STRUCTURE 1106(2016):70-75. |
入库方式： OAI收割
来源：化学研究所
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