85100-76-1Relevant articles and documents
Solute-solvent interactions of amino acids in aqueous 1-propyl-3- methylimidazolium bromide ionic liquid solutions at 298.15 K
Shekaari, Hemayat,Jebali, Fatemeh
, p. 1409 - 1427 (2010)
Densities, viscosities, and refractive indices of three amino acids (glycine, L-alanine, and L-valine) in aqueous solutions of an ionic liquid, 1-propyl-3-methylimidazolium bromide, have been measured at 298.15 K. These data have been used to calculate apparent molar volumes (V φ ), viscosity B-coefficients, and molar refractions of these mixtures. The standard partial molar volumes (Vφ0) and standard partial molar volumes of transfer (Δtr Vφ0) have been determined for these amino acid solutions from these density data. The resulting values of Vφ0 and Δtr Vφ0 for transfer of amino acids from water to aqueous ionic liquid solutions have been interpreted in terms of solute + solvent interactions. These data also indicate that hydrophobic interactions predominate in L-alanine and L-valine solutions. Linear correlations were found for both Vφ0 and the viscosity B-coefficient with the number of carbon atoms in the alkyl chain of the amino acids, and have been used to estimate the contribution of the charged end groups ( NH+ 3, COO-), the CH2 group, and other alkyl chains of the amino acids. The viscosity and molar refractivity results have been used to confirm the conclusions obtained from volumetric properties.
Extraction of cesium ions from aqueous solutions using calix[4]arene-bis(tert.octylbenzo-crown-6) in ionic liquids
Luo, Huimin,Dai, Sheng,Bonnesen, Peter V.,Buchanan III,Holbrey, John D.,Bridges, Nicholas J.,Rogers, Robin D.
, p. 3078 - 3083 (2004)
Solvent extraction of cesium ions from aqueous solution to hydrophobic ionic liquids without the introduction of an organophilic anion in the aqueous phase was demonstrated using calix[4]arene-bis(tert-octylbenzo-crown-6) (BOBCalixC6) as an extractant. The selectivity of this extraction process toward cesium ions and the use of a sacrificial cation exchanger (NaBPh 4) to control loss of imidazolium cation to the aqueous solutions by ion exchange have been investigated.
Thermodynamic properties of 1-alkyl-3-methylimidazolium bromide ionic liquids
Paulechka,Kabo,Blokhin,Shaplov,Lozinskaya,Vygodskii
, p. 158 - 166 (2007)
Heat capacities and enthalpies of phase transitions for a series of 1-alkyl-3-methylimidazolium bromide ionic liquids have been measured by adiabatic calorimetry. Thermodynamic properties of the compounds were calculated in the temperature range of (5 to 370) K. Water was found to have an additive contribution to the heat capacities of [C4mim]Br in the liquid state above Tfus and in the solid state below 160 K at w(H2O) ≤ 5 · 10-3.
Watching microwave-promoted chemistry: reaction monitoring using a digital camera interfaced with a scientific microwave apparatus
Bowman, Matthew D.,Leadbeater, Nicholas E.,Barnard, T. Michael
, p. 195 - 198 (2008)
By interfacing a digital camera with a scientific microwave unit it is possible to monitor macroscopic effects as reactions proceed, including color and viscosity changes, evolution of gases, metal-mediated couplings, and arcing.
Transition-metal-catalyzed reactions involving imidazolium salt/N-heterocyclic carbene couples as substrates
Clement, Nicolas D.,Cavell, Kingsley J.
, p. 3845 - 3847 (2004)
Reactive Couples: Imidazolium salts react with alkenes under mild conditions in the presence of a Ni0-based catalyst to produce 2-alkyl imidazolium salts (see scheme, cod = 1,5-cyclooctadiene). The mechanism involves oxidative addition of an im
A Superstrong and Reversible Ionic Crystal-Based Adhesive Inspired by Ice Adhesion
Liu, Lili,Liu, Ziyang,Ren, Yongyuan,Zou, Xiuyang,Peng, Wansu,Li, Weizheng,Wu, Yiqing,Zheng, Sijie,Wang, Xiaoliang,Yan, Feng
supporting information, p. 8948 - 8959 (2021/03/16)
In this study, we developed a superstrong and reversible adhesive, which can possess a high bonding strength in the “adhesive” state and detach with the application of heating. An ionic crystal (IC) gel, in which an IC was immobilized within a soft-polymer matrix, were synthesized via in situ photo-crosslinking of a precursor solution composed of N, N-dimethyl acrylamide (DMAA) and a melted IC. The obtained IC gel is homogenous and transparent at melt point. When cooled to the phase transition temperature of the IC, the gel turns into the adhesive with the adhesion strength of 5.82 MPa (on glasses), due to the excellent wetting of melted gel and a thin layer of crystalline IC with high cohesive strength formed on the substrates. The synergistic effects between IC, polymer networks and substrates were investigated by solid state 1H NMR and molecular dynamics simulation. Such an adhesive layer is reversable and can be detached by heating and subsequent re-adhesion via cooling. This study proposed the new design of removable adhesives, which can be used in dynamic and complex environments.
Controllable Homogeneity/Heterogeneity Switch of Imidazolium Ionic Liquids for CO2 Utilization
Byun, Jeehye,Zhang, Kai A. I.
, p. 4610 - 4616 (2018/09/12)
Imidazolium ionic liquids (IL) have been recognized as a promising platform for CO2 capture and conversion owing to the structural designability through molecular combination of cationic substituents and counter anions. However, the conventiona
