Data_Sheet_1_Microscopic Structural and Dynamic Features in Triphilic Room Temperature Ionic Liquids.PDF (394.47 kB)
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Data_Sheet_1_Microscopic Structural and Dynamic Features in Triphilic Room Temperature Ionic Liquids.PDF

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posted on 02.05.2019, 13:22 by Fabrizio Lo Celso, Giovanni B. Appetecchi, Elisabetta Simonetti, Man Zhao, Edward W. Castner, Uwe Keiderling, Lorenzo Gontrani, Alessandro Triolo, Olga Russina

Here we report a thorough investigation of the microscopic and mesoscopic structural organization in a series of triphilic fluorinated room temperature ionic liquids, namely [1-alkyl,3-methylimidazolium][(trifluoromethanesulfonyl)(nonafluorobutylsulfonyl)imide], with alkyl = ethyl, butyl, octyl ([Cnmim][IM14], n = 2, 4, 8), based on the synergic exploitation of X-ray and Neutron Scattering and Molecular Dynamics simulations. This study reveals the strong complementarity between X-ray/neutron scattering in detecting the complex segregated morphology in these systems at mesoscopic spatial scales. The use of MD simulations delivering a very good agreement with experimental data allows us to gain a robust understanding of the segregated morphology. The structural scenario is completed with determination of dynamic properties accessing the diffusive behavior and a relaxation map is provided for [C2mim][IM14] and [C8mim][IM14], highlighting their natures as fragile glass formers.

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