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题名: Crystallization and temperature-dependent structure deflection of C(6)mimBr ionic liquid intercalated in LAPONITE (R)
作者: Jiang, FL; Li, C; Guo, XJ; Fu, HY; Wu, GZ; Chen, SM
刊名: RSC ADVANCES
出版日期: 2016
卷号: 6, 期号:100, 页码:98018-98025
DOI: 10.1039/c6ra18618a
通讯作者: Wu, GZ (reprint author), Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China. ; Chen, SM (reprint author), Chinese Acad Sci, Inst Proc Engn, Beijing 100190, Peoples R China.
文章类型: 期刊论文
英文摘要: The physicochemical properties of large molecules confined in nanopores are expected to be different from those of the bulk. This study investigates the cation-anion relative position and the molecular orientation of the 1-hexyl-3-methylimidazolium bromide (C(6)mimBr) ionic liquid intercalated in LAPONITE (R) by a temperature-dependent X-ray absorption fine structure (XAFS) and some traditional methods (TEM, DSC, XRD, and IR). DSC and TEM analyses revealed the formation of C(6)mimBr crystals intercalated in LAPONITE (R). The XAFS and XRD analyses at ambient temperature revealed that an ordered monolayer structure, with C(6)mim(+) cations intercalated in the interlayer nanospace and Br located on the edge of the LAPONITE (R), was formed when ILs were intercalated in LAPONITE (R). The results also demonstrated that the enhanced interactions, the formed hydrogen bonds, as well as the ordered monolayer arrangement induced the formation of C(6)mimBr crystals when intercalated in LAPONITE (R). In situ XAFS analysis with a combination of XRD patterns at varied temperatures revealed that the structure orientation of the intercalated C(6)mim(+) cations tends to deflect and maintain the ordered monolayer arrangement with the elevation of temperature. The ordered crystal structure still exists at 120 degrees C and disappears at a higher temperature.
收录类别: SCI
语种: 英语
WOS记录号: WOS:000386312700063
ISSN号: 2046-2069
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.sinap.ac.cn/handle/331007/26462
Appears in Collections:中科院上海应用物理研究所2011-2017年_期刊论文

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