Search results for " Pyrrolidinium"

showing 2 items of 2 documents

Multiple points of view of heteronuclear NOE: long range vs short range contacts in pyrrolidinium based ionic liquids in the presence of Li salts.

2015

The nuclear Overhauser enhancement (NOE) is a powerful tool of NMR spectroscopy extensively used to gain structural information in ionic liquids (ILs). A general model for the distance dependence of intermolecular NOE in ILs was recently proposed showing that NOE spots beyond the first solvation shell and accounts for long-range effects. This conclusion prompted for a deep rethinking of the NOE data interpretation in ILs. In this paper we present an extensive and quantitative study of N-propyl-N-methyl pyrrolidinium bis(trifluoromethanesulfonyl)imide (PYR13TFSI), the homologue with bis(fluorosulfonyl)imide (PYR13FSI), and their mixtures with LiTFSI based on 1H-19F and 1H-7LiNOE correlation …

Materials Chemistry2506 Metals and AlloysAtomic and Molecular Physics and OpticAnalytical chemistryCondensed Matter PhysicIonic liquidLithiumchemistry.chemical_compoundMaterials ChemistryPhysical and Theoretical ChemistryImideHeteronuclear NOESpectroscopyIntermolecular NOE;Fluorosulfonylimide;Ionic liquids;NMR;Trifluoromethanesulfonimide;Pyrrolidinium;Lithium;Heteronuclear NOELarmor precessionFluorosulfonylimideIntermolecular NOEElectronic Optical and Magnetic MaterialIntermolecular forceHeteronuclear NOE NMR Ionic liquids Pyrrolidinium Fluorosulfonylimide Trifluoromethanesulfonimide Lithium Intermolecular NOENuclear magnetic resonance spectroscopyCondensed Matter PhysicsAtomic and Molecular Physics and OpticsNMRElectronic Optical and Magnetic MaterialsIonic liquidsCrystallographyTrifluoromethanesulfonimideSolvation shellHeteronuclear moleculechemistryIonic liquidPolarPyrrolidinium
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Lithium ion conducting PVdF-HFP composite gel electrolytes based on N-methoxyethyl-N-methylpyrrolidinium bis(trifluoromethanesulfonyl)-imide ionic li…

2010

Blends of PVDF-HFP and ionic liquids (ILs) are interesting for application as electrolytes in plastic Li batteries. They combine the advantages of the gel polymer electrolytes (GPEs) swollen by conventional organic liquid electrolytes with the nonflammability, and high thermal and electrochemical stability of ILs. In this work we prepare and characterize PVDF-HFP composite membranes swollen with a solution of LiTFSI in ether-functionalized pyrrolidinium-imide (PYRA12O1). The membranes are filled in with two different types of silica: i) mesoporous SiO2 (SBA-15) and a commercial nano-size one (HiSilTM T700). The ionic conductivity and the electrochemical properties of the gel electrolytes ar…

Materials sciencePVdFEnergy Engineering and Power TechnologyIonic bondingchemistry.chemical_elementElectrolyteIonic liquidchemistry.chemical_compoundIonic conductivityThermal stabilityElectrical and Electronic EngineeringPhysical and Theoretical ChemistryGel polymer electrolyteSettore CHIM/02 - Chimica FisicaChromatographyRenewable Energy Sustainability and the EnvironmentPVdF; Ionic liquids; Pyrrolidinium; Gel polymer electrolytes; Lithium battery; Nanoscale fillersLithium batteryLithium batteryMembraneSettore ING-IND/22 - Scienza E Tecnologia Dei MaterialiChemical engineeringchemistryIonic liquidLithiumNanoscale fillerNanoscale fillersPyrrolidinium
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