title: Experimental Signature of Microheterogeneity in Ionic Liquid-H2 O Systems and Their Perturbation by Adding Li(+) Salts: A Pulsed Gradient Spin-Echo NMR Approach.
abstract: Distinct microheterogeneity has been observed in the [OMIM]Br-H2 O system, which is interestingly perturbed by the addition of Li(+) salts, indicating unusual diffusivity of [OMIM]Br and H2 O 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-H2 O system is weak enough to show any perturbation caused by the Li(+) salts on the NMR time scale.
authors: Physical and Materials Chemistry Division, National Chemical Laboratory, Homi Bhabha Road, Pune 411008 (India). r.nanda@ncl.res.in.
authors: Raju
authors: R
authors: Nanda
authors: Central NMR Facility, National Chemical Laboratory, Homi Bhabha Road, Pune 411008 (India). pr.rajamohanan@ncl.res.in.
authors: P R
authors: PR
authors: Rajamohanan
authors: Physical and Materials Chemistry Division, National Chemical Laboratory, Homi Bhabha Road, Pune 411008 (India). a.kumar@ncl.res.in.|Physical and Materials Chemistry Division, National Chemical Laboratory, Homi Bhabha Road, Pune 411008 (India), Fax: (+91)2025902636. a.kumar@ncl.res.in.
authors: Anil
authors: A
authors: Kumar
keywords: ionic liquids; lithium; microheterogeneity; salt effect; viscosity