Rotational Diffusion of Nonpolar and Ionic Solutes in 1-Alkyl-3-Methylimidazolium Bis(trifluoromethylsulfonyl)imides: Is Solute Rotation Always Influenced by the Length of the Alkyl Chain on the Imidazolium Cation?

2012 ◽  
Vol 116 (42) ◽  
pp. 12819-12825 ◽  
Author(s):  
V. Gangamallaiah ◽  
G. B. Dutt
Keyword(s):  
Alkyl Chain ◽  
Rotational Diffusion ◽  
Imidazolium Cation ◽  
Ionic Solutes

Aggregation Behaviours of Surface-Active Ionic Liquids 1-Alkyl-3-methylimidazolium Bis(2-ethylhexyl)sulfosuccinate

2016 ◽  
Vol 69 (11) ◽  
pp. 1254 ◽  
Author(s):  
Jiequn Wu ◽  
Tianxiang Yin ◽  
Shaoxiong Shi ◽  
Weiguo Shen
Keyword(s):  
Ionic Liquids ◽  
Self Assembly ◽  
Alkyl Chain ◽  
Systematic Investigation ◽  
Bulk Solution ◽  
Free Energies ◽  
Imidazolium Cation ◽  
Structure Transition ◽  
Surface Active ◽  
Counter Ion Binding

The systematic investigation of the aggregation behaviours of newly synthesised surface-active ionic liquids 1-alkyl-3-methylimidazolium bis(2-ethylhexyl)sulfosuccinate ([Cnmim][AOT], n = 2, 3, 5, 6, 7) by various techniques is reported. The critical aggregation concentrations (CACs) and the standard Gibbs free energies of aggregation () were determined from measurements on conductivity, fluorescence, and surface tension, which suggested a stronger self-assembly ability in the bulk solution for [Cnmim][AOT] surfactants with longer alkyl chain cations. An interesting structure transition driven by the penetration of the imidazolium cation into the aggregate when n > 4 was found by analysis of the variations of the values of CAC, , the degree of counter ion binding (β), and the micropolarity (I1/I3) immediately after the CAC with changing alkyl chain length of the imidazolium cation, which was further confirmed by 1H NMR measurements.

Protic Ionic Liquids Based on the Alkyl-Imidazolium Cation: Effect of the Alkyl Chain Length on Structure and Dynamics

2019 ◽  
Vol 123 (18) ◽  
pp. 4044-4054 ◽  
Author(s):  
Iqbaal Abdurrokhman ◽  
Khalid Elamin ◽  
Olesia Danyliv ◽  
Mohammad Hasani ◽  
Jan Swenson ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Chain Length ◽  
Alkyl Chain ◽  
Alkyl Chain Length ◽  
Protic Ionic Liquids ◽  
Imidazolium Cation ◽  
Structure And Dynamics ◽  
Cation Effect

scholarly journals Dissolution Behavior of Cellulose in IL + DMSO Solvent: Effect of Alkyl Length in Imidazolium Cation on Cellulose Dissolution

2015 ◽  
Vol 2015 ◽  
pp. 1-4 ◽  
Author(s):  
Airong Xu ◽  
Lili Cao ◽  
Bingjun Wang ◽  
Junying Ma
Keyword(s):  
Solvent Effect ◽  
Dimethyl Sulfoxide ◽  
Chain Length ◽  
Alkyl Chain ◽  
Alkyl Chain Length ◽  
Dissolution Behavior ◽  
Cellulose Dissolution ◽  
Imidazolium Cation ◽  
Cellulose Solvents ◽  
Alkyl Length

Four cellulose solvents including [C2mim][CH3COO] + DMSO, [C4mim][CH3COO] + DMSO, [C6mim][CH3COO] + DMSO, and [C8mim][CH3COO] + DMSO were prepared by adding dimethyl sulfoxide DMSO in 1-ethyl-3-methylimidazolium acetate [C2mim][CH3COO], 1-butyl-3-methylimidazolium acetate [C4mim][CH3COO], 1-hexyl-3-methylimidazolium acetate [C6mim][CH3COO], and 1-octyl-3-methylimidazolium acetate [C8mim][CH3COO], respectively. The solubilities of cellulose in these solvents were determined at 25°C. The effect of the alkyl chain length in imidazolium cation on cellulose solubility was investigated. With increasing alkyl chain length in imidazolium cation, the solubility of cellulose increases, but further increase in alkyl chain length results in decreases in cellulose.

Aggregation of sodium dodecylbenzene sulfonate: Weak molecular interactions modulated by imidazolium cation of short alkyl chain length

2020 ◽  
Vol 589 ◽  
pp. 124435 ◽  
Author(s):  
Álvaro Javier Patiño Agudelo ◽  
Guilherme Max Dias Ferreira ◽  
Gabriel Max Dias Ferreira ◽  
Yara Luiza Coelho ◽  
Eliara Acipreste Hudson ◽  
...  
Keyword(s):  
Chain Length ◽  
Molecular Interactions ◽  
Alkyl Chain ◽  
Alkyl Chain Length ◽  
Sodium Dodecylbenzene Sulfonate ◽  
Imidazolium Cation ◽  
Dodecylbenzene Sulfonate

Electroanalytical performance of β-cyclodextrin and ionic liquid modified carbon paste electrode for the determination of verapamil in urine and pharmaceutical formulation

2021 ◽  
Author(s):  
Sanja Mutić ◽  
Danka Radanović ◽  
Milan Vraneš ◽  
Slobodan Gadzuric ◽  
Jasmina Anojčić
Keyword(s):  
Ionic Liquid ◽  
Electrochemical Sensors ◽  
Alkyl Chain ◽  
Cost Effective ◽  
Alkyl Chain Length ◽  
Modified Carbon Paste Electrode ◽  
Carbon Paste ◽  
Imidazolium Cation ◽  
Paste Electrode

Analytical performance of sensitive and cost-effective electrochemical sensors based on ionic liquids (ILs) with bis(trifluoromethylsulfonyl) imide anion, [NTf2]–, and imidazolium cation with different alkyl-chain length for electrochemical oxidation of verapamil...

Effect of Alkyl Chain Length of Imidazolium Cation on the Electroreduction of CO2 to CO on Ag Electrode in Acetonitrile

2017 ◽  
Vol 70 (3) ◽  
pp. 293 ◽  
Author(s):  
Qianqian Wang ◽  
Chengzhen Chen ◽  
Juhua Zhong ◽  
Bo Zhang ◽  
Zhenmin Cheng
Keyword(s):  
Chain Length ◽  
Alkyl Group ◽  
Density Functional ◽  
Alkyl Chain ◽  
Co2 Reduction ◽  
Alkyl Chain Length ◽  
Imidazolium Cation ◽  
Preparative Scale ◽  
Faradaic Efficiency ◽  
Ag Electrode

The effect of imidazolium-based ionic liquid on the electroreduction of CO2 to CO over a Ag electrode in acetonitrile catholyte was investigated. The voltage–current profiles clearly indicate that the electroreduction of CO2 is sensitive to the alkyl chain length at the N1-position in imidazolium cation (MIM+). Density functional theory computation suggests that the onset potential of CO2 reduction is related to the association degree between MIM+ and CO2•– species. More importantly, preparative scale electrolysis shows that the selectivity and output rate for the target product CO are also significantly affected by MIM+. With the elongation of the alkyl group in MIM+ from ethyl to octyl, the Faradaic efficiency for CO remarkably increases from 87 ± 4 % to 97 ± 2 % and then remains almost unchanged. However, the curve of the current density with respect to the chain length of alkyl group shows a convex style. These results indicate the dependence of CO2 reduction efficiency on the MIM+ adsorbed on the Ag electrode surface.

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