On the Formation of a Third, Nanostructured Domain in Ionic Liquids

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• 作者：Ana B. Pereiro ; M. J. Pastoriza-Gallego ; Karina Shimizu ; Isabel M. Marrucho ; Jos茅 N. Canongia Lopes ; Manuel M. Pi帽eiro ; Luis Paulo N. Rebelo
• 刊名：Journal of Physical Chemistry B
• 出版年：2013
• 出版时间：September 19, 2013
• 年：2013
• 卷：117
• 期：37
• 页码：10826-10833
• 全文大小：417K
• 年卷期：v.117,no.37(September 19, 2013)
• ISSN：1520-5207

文摘

The study of solid鈥揻luid transitions in fluorinated ionic liquids using differential scanning calorimetry, rheology, and molecular modeling techniques is an essential step toward the understanding of their dynamics and the thermodynamics and the development of potential applications. Two fluorinated ionic liquids were studied: 1-hexyl-3-methylimidazolium perfluorobutanesulfonate, HMIm(PFBu)SO₃, and tetrabutylammonium perfluorobutanesulfonate, NB₄(PFBu)SO₃. The experimental calorimetric and rheological data were analyzed taking into account the possible mesoscale structure of the two fluorinated ionic liquids. The simulation results indicate the possible formation of three nanosegregated domains鈥攑olar, nonpolar, and fluorous鈥攖hat may have a profound impact on ionic liquid research. In the case of HMIm (PFBu)SO₃ the three types of mesoscopic domains can act as interchangeable jigsaw pieces enabling the formation of multiple types of crystals and inducing the observed calorimetry and rheological trends.