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Please use this identifier to cite or link to this item: http://hdl.handle.net/123456789/2849

Authors: Tarekegn, Heliso
Advisors: Dr. Ignacio. V. Garcia
Keywords: alkylation
ionic liquids
Copyright: Jun-2010
Date Added: 9-May-2012
Publisher: AAU
Abstract: The ionic liquid field has been extensively dominated by imidazolium salts with anions most frequently being fluorine-containing. By modifying the anion or the fluorine containing cation, a wide range of properties can be tuned. Ionic liquids with fluorine-containing groups in the cation are promising solvents for electrochemical, photovoltaic, surfactant and synthetic applications. Previously, 1-methyl-3-triflouroacetyl imidazolium trifluoroacetate ionic liquid was synthesised but with high melting point. Following this synthesis, in the present study, a triflouroacetylated imidazole based ionic liquid with longer alkyl chain; 1-pentyl-3- triflouroacetyl imidazolium based ionic liquid was synthesized by alkylation of imidazole followed by triflouroacetylation and resulted in a viscous solid. The ionic liquid was characterized by NMR. In the second trial, the same procedure was repeated increasing the reaction time and the crude product was distilled under vacuum and yielded a new crystalline hydroxide anion based 1-pentyl-3-triflouroacetyl imidazolium ionic liquid. This result was evident from NMR characterization and elemental analysis. This ionic liquid was soluble in water and in most of organic solvents and was found to be highly hygroscopic and an electrolyte.
URI: http://hdl.handle.net/123456789/2849
Appears in:Thesis - Chemistry

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