Title | Characterization of BF4- in terms of its effect on water by the 1-propanol probing methodology |
Publication Type | Journal Article |
Year of Publication | 2014 |
Authors | Morita, T, Nitta, A, Nishikawa, K, Westh, P, Koga, Y |
Journal | JOURNAL OF MOLECULAR LIQUIDS |
Volume | 198 |
Pagination | 211-214 |
Date Published | OCT |
ISSN | 0167-7322 |
Abstract | One of the most common constituent anions for room temperature ionic liquids (RTILs), BF4-, was characterized in terms of its effect on H2O using the so-called 1-propanol (1P) probing methodology developed by us earlier {[}PCCP, 15(2013) 14548-14565]. The results indicated that BF4- is quantitatively characterized as an amphiphile with weak hydrophobic and moderate hydrophilic contributions. These results were plotted on a two-dimensional map with hydrophobicity and hydrophilicity axes, H2O defining the origin. The melting point of 1-ethyl-3-methylimidazoliumtetrafluoroborate ({[}C(2)mim]BF4) was found within the trend that the larger the hydrophobicity and the hydrophilicity of the chosen counter anion, the lower the melting point of the resulting RTIL made of {[}C(2)mim](+) cation and the chosen anion. For the 1-butyl-3-methylimidazolium ({[}C(4)mim](+)) based RTILs, however, redetermination of the melting point of the perfectly dry {[}C(4)mim]BF4 appears to be necessary. (C) 2014 Elsevier B.V. All rights reserved. |
DOI | 10.1016/j.molliq.2014.06.024 |
![](https://chem.ubc.ca/sites/default/files/styles/header_large_c/public/header_images/ugradlab-header.jpg?itok=-FidXx5L×tamp=1585256910)