Alkyl Methyl Imidazolium-Based Ionic Liquids at the Au(111) Surface: Anions and Alkyl Chain Cations Induced Interfacial Effects was written by Kamalakannan, Shanmugasundaram;Prakash, Muthuramalingam;Al-Mogren, Muneerah Mogren;Chambaud, Gilberte;Hochlaf, Majdi. And the article was included in Journal of Physical Chemistry C in 2019.Recommanded Product: 1-Methyl-1H-imidazol-3-ium chloride This article mentions the following:
The structure, stability, and adsorption mechanism on the Au(111) surface of hydrophilic/hydrophobic ionic liquids (ILs) with various lengths of the alkyl chain group in the cation were studied using 1st-principles approaches including electrostatic potential (ESP), electron d. anal., and dispersion-corrected d. functional theory (DFT-D3) methods. A suitable selection of ILs is considered. Indeed, the authors treat ILs [CnMIm]+[X]–, where X = Cl–, PF6–, and TFSA–, MIm = methylimidazolium and where the authors varied the alkyl chain (Cn) length for n = 0, 2, 4, 6, 8, and 10. The adsorption energies (Eads‘s) of fluorinated ILs are lower (by â?0%) than those of nonfluorinated ILs. Computations show that the nature of the anion within the ILs and the alkyl chain length play a very important role to alter the interfacial interactions between ILs and Au surface. Indeed, the alkyl groups of the cation affect the cation-anion interaction strength within ILs because of specific modes of adsorption of alkyl chains on the Au(111) surface. Also, structural-induced adsorption effects are observed during the variation of alkyl chain and anions. These are due to the modification of the local properties of the Au surface upon IL adsorption, where the authors identify, in some specific cases, an enhancement of the charge transfers between the ILs and the Au(111) surface through van der Waals and dispersive interactions. In the experiment, the researchers used many compounds, for example, 1-Methyl-1H-imidazol-3-ium chloride (cas: 35487-17-3Recommanded Product: 1-Methyl-1H-imidazol-3-ium chloride).
1-Methyl-1H-imidazol-3-ium chloride (cas: 35487-17-3) belongs to imidazole derivatives. Imidazole derivatives generally have good solubility in protic solvents. Simple imidazole derivatives, such as 1H-imidazole, 2-methyl-1H-imidazole, and 1,2-dimethylimidazole, have very high solubility in water. Imidazole is incorporated into many important biological compounds. The most pervasive is the amino acid histidine, which has an imidazole side-chain. Histidine is present in many proteins and enzymes, e.g. by binding metal cofactors, as seen in hemoglobin.Recommanded Product: 1-Methyl-1H-imidazol-3-ium chloride
Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem