|Title||Relaxational dynamics in the PYR14-IM14 ionic liquid by mechanical spectroscopy|
|Publication Type||Articolo su Rivista peer-reviewed|
|Year of Publication||2018|
|Authors||Paolone, A., Palumbo O., Trequattrini F., and Appetecchi Giovanni Battista|
|Keywords||Conformers, Dynamics, Glass transition, Ion hopping, Ionic liquids, Liquid Phase, Mechanical spectroscopy, Modified debye models, Pyrrolidinium, Relaxational dynamics, Thermally activated|
The anelastic spectrum of the N-butyl-N-methyl-pyrrolidinium (trifluoromethanesulfonyl) (nonafluorobutanesulfonyl)imide (PYR14-IM14) is reported for the first time. On cooling, at 4 Kmin-1 the sample undergoes a glass transition around 190 K. In the liquid phase, a thermally activated relaxation process is measured and it is analyzed by means of a modified Debye model. The best fit results indicate that the peak is related to the ion hopping between non-equivalent configurations which are mainly defined by the anion conformer configuration. © 2018 Universidade Federal de Sao Carlos. All rights reserved.
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