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RESEARCH PRODUCT
Investigating Intermolecular Interactions in a DME-Based Hybrid Ionic Liquid Electrolyte by HOESY NMR
Derick GyabengMaria ForsythPierre-alexandre MartinPierre-alexandre MartinLuke A. O'dellMichaël DeschampsUrbi Palsubject
Ionic bondingSalt (chemistry)02 engineering and technologyElectrolyteNuclear Overhauser effect010402 general chemistry01 natural scienceslcsh:Chemistrychemistry.chemical_compoundComputingMilieux_MISCELLANEOUSOriginal Researchchemistry.chemical_classificationNuclear Overhauser EffectIntermolecular forceSolvationcross-relaxation rates[CHIM.MATE]Chemical Sciences/Material chemistryGeneral Chemistryionic liquid electrolytesion interactions021001 nanoscience & nanotechnology0104 chemical sciencesChemistrychemistryHeteronuclear moleculelcsh:QD1-999Ionic liquidPhysical chemistryHOESY NMR0210 nano-technologydescription
The intermolecular interactions in a hybrid electrolyte based on various compositions of the ionic liquid N-methyl-N-propyl pyrrolidinium bis-fluorosulfonylimide (C3mpyrFSI), LiFSI salt and an ether-based additive, 1,2-dimethoxy ethane (DME), have been investigated using the HOESY (Heteronuclear Overhauser Effect SpectroscopY) NMR experiment. This NMR technique allows a quantification of the intermolecular interactions in ionic liquids (ILs) by measuring the cross-relaxation rate (σ) between different pairs of nuclei. Thereby, we compare the cross-relaxation rates between the cations, anions and DME in these hybrid electrolyte systems using 1H-7Li and 1H-19F HOESY experiments, and interpret the measured parameters in terms of ionic and molecular associations. The results give insights into the local coordination environment of the Li+ cations and their solvation by the FSI anions and DME.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2019-01-29 | Frontiers in Chemistry |