Now showing items 1-10 of 327
Inorganic selenium speciation analysis in Allium and Brassica vegetables by ionic liquid assisted liquid-liquid microextraction with multivariate optimization
A highly sensitive vortex assisted liquid-liquid microextraction (VA-LLME) method was developed for inorganic Se [Se(IV) and Se(VI)] speciation analysis in Allium and Brassica vegetables. Trihexyl(tetradecyl)phosphonium ...
Chemical reactivity in ionic liquids: Nitroso group transfer from N-nitrososulfonamide
(Royal Society of Chemistry, 2006-12)
Nitroso group trnsfer in ionic liquids exhibits good correlation with the polarity parameters of the ionic liquid, showing that the amine nucleophililicity in no increased on going from water to the ionic liquid
Electron donor ionic liquids entrapped in anionic and cationic reverse micelles. Effects of the interface on the ionic liquid–surfactant interactions
(Royal Society of Chemistry, 2013-08)
The behavior of two ionic liquids (ILs) with high electron donor ability such as 1-butyl-3-methylimidazolium trifluoromethanesulfonate (bmimTfO) and 1-butyl-3-methylimidazolium trifluoroacetate (bmimTfA) entrapped in anionic ...
Understanding the destructuration of starch in water–ionic liquid mixtures
(Royal Society of Chemistry, 2015-05)
The destructuration of native maize starch in mixtures of water and ionic liquids (ILs) containing acetate anions was studied in dynamic heating conditions, combining calorimetry, rheology, microscopy and chromatographic ...
Photoisomerization of ionic liquid ammonium cinnamates: One-pot synthesis-isolation of Z-cinnamic acids
(American Chemical Society, 2010-11)
Photoisomerization presents the only direct method for contra-thermodynamic E-Z isomerization of olefins. Synthetic applications of this method have been limited by its reversible nature, which leads to a photostationary-state ...
Understanding the Role of Protic Ionic Liquids (PILs) in Reactive Systems: Rational Selection of PILs for the Design of Green Synthesis Strategies for Allylic Amines and β‐Amino Esters
(Wiley-VCH Verlag, 2019-07)
The reactive behaviour of protic ionic liquids (PILs) has been shown to be governed not only by their chemical structures but also by their global compositions, which include the presence of free acids and bases at equilibrium ...
Nucleophilic and acid catalyst behavior of a protic ionic liquid in a molecular reaction media. Part 1
(John Wiley & Sons Ltd, 2009-05)
This work presents a new approach using ionic liquids, namely ethylammonium nitrate. The aim was to analyze how the addition of small amounts of a protic ionic liquid to a pure molecular solvent, modifies the microscopic ...
Determination of inorganic selenium species in water and garlic samples with on-line ionic liquid dispersive microextraction and electrothermal atomic absorption spectrometry
(Elsevier Science, 2011-09)
A non-chromatographic separation and preconcentration method for Se species determination based on the use of an on-line ionic liquid (IL) dispersive microextraction system coupled to electrothermal atomic absorption ...
Ionic liquid-based microextraction techniques for trace-element analysis
Ionic liquid-based liquid-liquid microextraction (IL-LLME) techniques are turning into remarkable tools to develop greener sample-preparation methods in analytical chemistry. The application of ILs in LLME is receiving ...
Lithium Metal Protection by a Cross-Linked Polymer Ionic Liquid and Its Application in Lithium Battery
(American Chemical Society, 2020-01)
Lithium (Li) metal has been considered as an important anode candidate to reach more powerful energy storage devices with higher gravimetric and volumetric capacities. Nevertheless, the growth of high surface area lithium ...