Baxter, Eric T.;Zhang, Jun;Tan, Shuai;Nguyen, Manh-Thuong;Zhang, Difan;Yuan, Qinqin;Cao, Wenjin;Wang, Xue-Bin;Prabhakaran, Venkateshkumar;Glezakou, Vassiliki-Alexandra;Johnson, Grant E. published 《Functionalization of Electrodes with Tunable [EMIM]x[Cl]x+1– Ionic Liquid Clusters for Electrochemical Separations》 in 2022. The article was appeared in 《Chemistry of Materials》. They have made some progress in their research.Synthetic Route of C6H11ClN2 The article mentions the following:
Functionalization of electrodes with clusters of hydrophobic mols. may improve the energy efficiency and selectivity of electrochem. separations by modulating the desolvation process occurring at the interface. Ionic liquids (ILs), which have a broad range of compositions and properties, are potential candidates for controlling the transport, desolvation, and adsorption of target ions at electrochem. interfaces. Herein, the authors report a joint exptl. and theor. study of the structure, stability, and selective adsorption properties of IL clusters 1-ethyl-3-methylimidazolium chloride [EMIM]x[Cl]x+1– (x = 1-10) and demonstrate their ability to adsorb and sep. ions from the solution The structure and stability of the IL clusters are determined exptl. using high-mass-resolution electrospray ionization mass spectrometry, collision-induced dissociation, and neg.-ion photoelectron spectroscopy. The global optimization theory and ab initio mol. dynamics simulations provide mol.-level insights into the bonding and structural fluxionality of these species. Ion soft landing was used to selectively functionalize the surface of highly oriented pyrolytic graphite (HOPG) working electrodes with [EMIM]1[Cl]2–, [EMIM]3[Cl]4–, and [EMIM]5[Cl]6– clusters. Kelvin probe microscopy provides insights into the relative stability of the clusters on HOPG and their effect on the work function of IL-functionalized electrodes. Cyclic voltammetry measurements reveal the irreversible adsorption of Fe(CN)64-/3- anions during redox cycling, while electrochem. impedance spectroscopy indicates a substantial decrease in the electron transfer resistance of the IL-functionalized electrodes due to adsorption of Fe(CN)64-/3-. Overall, the authors’ findings demonstrate that IL clusters with different sizes and stoichiometry may be used to increase the efficiency of electrochem. separations, opening new horizons in selective electrode functionalization. And 1-Ethyl-3-methyl-1H-imidazol-3-ium chloride (cas: 65039-09-0) was used in the research process.
1-Ethyl-3-methyl-1H-imidazol-3-ium chloride(cas: 65039-09-0) is an imidazolium chloride ionic liquid that can be used as:a starting material for the preparation of 1-ethyl-3-methylimidazolium chloride/tetrafluoroborate (EMI.Cl.BF4) molten salt for electrochemical studies; a solvent as well as catalyst for the depolymerization of oak wood lignin.Synthetic Route of C6H11ClN2
Reference:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem