Article ID Journal Published Year Pages File Type
10732080 Radiation Physics and Chemistry 2011 5 Pages PDF
Abstract
The radiation chemical yields of F ions (G(F−) values) were measured for a group of imidazolium-based room-temperature ionic liquids following 60Co gamma ray irradiation. The G(F−) values of ionic liquids: hexafluorophosphate, bis[(trifluoromethyl)sulfonyl]imide, trifluoromethanesulfonate and tetrafluoroborate anions associated with 1-butyl-3-methylimidazolium cations were determined to be 0.227, 0.136, 0.101 and 0.008 μmol J−1, respectively. The G(F−) value is dependent on the F-X (X=B, P, etc.) bond energy and the anion structure and can be considered as an indicator of the radiation stability of fluorine-containing ionic liquids. In addition, as confirmed by UV-Vis absorption measurement, the radiolytic products with strong photoabsorption and color darkening depend on the structures of both the cation and the anion.
Related Topics
Physical Sciences and Engineering Physics and Astronomy Radiation
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