中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Temperature-Induced Molecular Rearrangement of an Ionic Liquid Confined in Nanospaces: An in Situ X-ray Absorption Fine Structure Study

文献类型:期刊论文

作者Jiang, FL; Li, C; Fu, HY; Wang, CY; Guo, XJ; Jiang, Z; Wu, GZ; Chen, SM
刊名JOURNAL OF PHYSICAL CHEMISTRY C
出版日期2015
卷号119期号:39页码:22724—22731
关键词CARBON NANOTUBES PHASE-TRANSITION MELTING-POINT SILICA NANOPARTICLES GRAPHITE WALLS BEHAVIOR MECHANISM IMIDAZOLIUM VISCOSITIES ADSORPTION
ISSN号1932-7447
通讯作者Wu, GZ (reprint author), Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China.
英文摘要A temperature-dependent X-ray absorption fine structure (XAFS) study was performed to investigate structural changes in the 1-hexyl-3-methylimidazolium bromine (C(6)mimBr) ionic liquid (IL) confined within the channels of multiwalled carbon nanotubes (MWCNTs). The XAFS spectra at room temperature confirmed the charge transfer from the bromine anion of the encapsulated IL to the MWCNTs. R-space analysis at ambient temperature revealed the reduced distance between the anions and cations in the confined IL compared with that in the bulk state. Interfacial-induced solidification and nanoconfinement in MWCNTs induced the self-assembly of ions in the confined IL to form a layered arrangement near the inner surface of MWCNTs. In situ XAFS analysis revealed that with increasing temperature charge transferred from MWCNTs to Br anions because of the damage from the conjugative effect between Br and MWCNTs and the relatively strong electronegativity of Br atoms. R-space analysis also showed gradual reduction in distance between cations and anions with increasing temperature. This finding indicated that the anion moved toward the ring planar, and ions rearranged from the layered to the near-planar structure. Raman and XRD experiments confirmed the structural transformation of the confined IL at increased temperature.
语种英语
WOS记录号WOS:000362385700054
公开日期2016-03-08
源URL[http://ir.sinap.ac.cn/handle/331007/25071]  
专题上海应用物理研究所_中科院上海应用物理研究所2011-2017年
推荐引用方式
GB/T 7714
Jiang, FL,Li, C,Fu, HY,et al. Temperature-Induced Molecular Rearrangement of an Ionic Liquid Confined in Nanospaces: An in Situ X-ray Absorption Fine Structure Study[J]. JOURNAL OF PHYSICAL CHEMISTRY C,2015,119(39):22724—22731.
APA Jiang, FL.,Li, C.,Fu, HY.,Wang, CY.,Guo, XJ.,...&Chen, SM.(2015).Temperature-Induced Molecular Rearrangement of an Ionic Liquid Confined in Nanospaces: An in Situ X-ray Absorption Fine Structure Study.JOURNAL OF PHYSICAL CHEMISTRY C,119(39),22724—22731.
MLA Jiang, FL,et al."Temperature-Induced Molecular Rearrangement of an Ionic Liquid Confined in Nanospaces: An in Situ X-ray Absorption Fine Structure Study".JOURNAL OF PHYSICAL CHEMISTRY C 119.39(2015):22724—22731.

入库方式: OAI收割

来源:上海应用物理研究所

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