Dealing with supramolecular structure for ionic liquids: a DOSY NMR approach

Abstract

Diffusion-ordered spectroscopy (DOSY) is a powerful method for the NMR analysis of ionic liquids. Thus the dynamic-structural behaviour of imidazolium ionic liquids has been investigated by measurements of direct 1H diffusion coefficients in different solvents.

Solvent‐Free Aerobic Oxidation of Ethylbenzene Promoted by NHPI/Co(II) Catalytic System: The Key Role of Ionic Liquids

“…Interestingly, upon further The diffusion coefficient measured for IL within the above range of concentrations change little and is found to be within 1.3-2.1 × 10 À 6 mol/cm 2 s. No discrimination between cation and anion is observed Figure 3a. [32] Within the rough approximation given by the use of the Stokes-Einstein equation, it can be estimated a dynamic radius in the 20-30 Å range, which obviously does not represent a good match with isolated solvated ions, but rather with small ion-pairs aggregates.…”

Eutectic Molecular Liquids Based on Hydrogen Bonding and π–π Interaction for Exfoliating Two‐dimensional Materials and Recycling Polymers

“…Diffusion NMR has been applied in several fields, such as verifying hydrogen bond interactions in ILs . The addition of one substance affects the diffusion constant ( D ) of another substance in the solvent.…”

“…Diffusion NMR has been appliedi ns everal fields, such as verifyingh ydrogen bond interactions in ILs. [14] The additiono f one substance affects the diffusion constant (D)o fa nother substance in the solvent. Generally speaking, this hindrance will reduce the diffusion constant.W ec hose aprotic solvent CDCl 3 ,t om inimize the interference of solvation as much as possible.…”

“Inverted” Deep Eutectic Solvents Based on Host‐Guest Interactions

“…Diffusion NMR is a nice tool to study different compounds based on their diffusion coefficients . The diffusion coefficient ( D ) of a compound is mainly dependent upon the size and functional group of the molecule.…”

“…Diffusion NMR is an ice tool to study different compounds based on their diffusion coefficients. [17] The diffusion coefficient (D)o facompound is mainly dependent upon the size and functional group of the molecule. The decrease of diffusion coefficients before and after combination can indicatet he formation of interaction between the two substances.…”