Experimental signature of microheterogeneity in ionic liquid-H2O systems and their perturbation by adding Li+ salts: a pulsed gradient spin-echo NMR approach

TitleExperimental signature of microheterogeneity in ionic liquid-H2O systems and their perturbation by adding Li+ salts: a pulsed gradient spin-echo NMR approach
Publication TypeJournal Article
Year of Publication2015
AuthorsNanda, R, Rajamohanan, PR, Kumar, A
JournalChemphyschem
Volume16
Issue14
Pagination2936-2941
Date PublishedOCT
ISSN1439-4235
Keywordsionic liquids, lithium, microheterogeneity, salt effect, viscosity
Abstract

Distinct microheterogeneity has been observed in the [OMIM]Br-H2O system, which is interestingly perturbed by the addition of Li+ salts, indicating unusual diffusivity of [OMIM]Br and H2O molecules. However, the diffusional dynamics of water clusters show contrasting salting behavior at higher concentrations of Li+ salts, following the classical salting phenomenon in lower amounts. In contrast, the existing microheterogeneity in the [BMIM]Br-H2O system is weak enough to show any perturbation caused by the Li+ salts on the NMR time scale.

DOI10.1002/cphc.201500503
Type of Journal (Indian or Foreign)

Foreign

Impact Factor (IF)3.138
Divison category: 
Central NMR Facility
Physical and Materials Chemistry