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C-D Vibration at C2 Position of Imidazolium Cation as a Probe of the Ionic Liquid Microenvironment.

ABSTRACT: Unlike molecular solvents, imidazolium-based ionic liquids are entirely made of ions with spatial heterogeneity. There is a need for spectroscopic probes that can assess the microenvironment near the cations of these complex liquids. In this manuscript, we describe simple chemical procedures to label the C2 position of imidazolium cation with a C-D vibrational probe and show, through linear and nonlinear vibrational spectroscopies, that this C-D stretching mode can be a useful analytical tool to assess both the solvent microenvironment and solute-solvent interactions in imidazolium-based ionic liquids from the cation point of view. It is expected that this C-D vibration probe on the cation will lead to the development of innovative experimental strategies that can provide a better understanding of such ionic liquids.

SUBMITTER: Williams IM

PROVIDER: S-EPMC7182297 | biostudies-literature | 2019 Jul

REPOSITORIES: biostudies-literature

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C-D Vibration at C2 Position of Imidazolium Cation as a Probe of the Ionic Liquid Microenvironment.

Williams Isis Marie IM Qasim Layla N LN Tran Ly L Scott Asia A Riley Kevin K Dutta Samrat S

The journal of physical chemistry. A 20190712 29

Unlike molecular solvents, imidazolium-based ionic liquids are entirely made of ions with spatial heterogeneity. There is a need for spectroscopic probes that can assess the microenvironment near the cations of these complex liquids. In this manuscript, we describe simple chemical procedures to label the C2 position of imidazolium cation with a C-D vibrational probe and show, through linear and nonlinear vibrational spectroscopies, that this C-D stretching mode can be a useful analytical tool to ...[more]

PMID: 31257885

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