Molecular Designed Ionic Liquid Crystal in Alkane
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- 作者：Tae Hui Kang ; Mahn Won Kim ; Yoonnam Jeon
- 刊名：The Journal of Physical Chemistry C
- 出版年：2013
- 出版时间：July 11, 2013
- 年：2013
- 卷：117
- 期：27
- 页码：14332-14337
- 全文大小：316K
- 年卷期：v.117,no.27(July 11, 2013)
- ISSN：1932-7455
文摘
Dispersed 1-tetradecyl-3-methylimidazolium chloride ([C14MIM]Cl) ionic liquid (IL) is insoluble with alkane solvents: 1-hexane, 1-octane, 1-decane, and 1-dodecane. Aggregation of IL, however, was initiated by adding 1-octanol (molar ratio of IL/octanol is 1/3), and rod-like single crystals grew after several days. Crystal growth was remarkably improved in the 1-octane solvent, which is expected to match with the alkyl chain length. The observed maximum crystal length was 5.2 mm. In addition, IL was not crystallized in an irregular shape solvent, 2-methyloctane. For further understanding of the crystallization conditions, we analyzed the components of the crystal by varying the IL/octanol ratio and characterized the structure by indexing the X-ray diffraction data in the 1-octane solvent. Increased 4 脜 of the lattice parameter along the b-axis (normal to the imidazolium ring plane) distinguished itself against the triclinic structure of [C14MIM]Cl powder, and it well corresponded with the interspaced octanol molecule.