Molecular Designed Ionic Liquid Crystal in Alkane

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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 lenght. 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 angstrom 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.
Publisher
AMER CHEMICAL SOC
Issue Date
2013-07
Language
English
Article Type
Article
Keywords

SENSITIZED SOLAR-CELLS; AGGREGATION BEHAVIOR; ELECTROLYTES; MICROEMULSIONS; SPECTROSCOPY; BATTERY; CATIONS; ANIONS; SALTS; WATER

Citation

JOURNAL OF PHYSICAL CHEMISTRY C, v.117, no.27, pp.14332 - 14337

ISSN
1932-7447
DOI
10.1021/jp403320f
URI
http://hdl.handle.net/10203/254768
Appears in Collection
PH-Journal Papers(저널논문)
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