نتایج جستجو برای: imidazolium based salts
تعداد نتایج: 2959675 فیلتر نتایج به سال:
The first example of an imidazolium-based fluorescent receptor for D-myo-inositol 1,4,5-trisphosphate (IP(3)) is reported in this study. The fluorescent receptor 1 bearing four imidazolium and pyrene groups displayed a large fluorescent quenching effect with myo-IP(3) compared to fluorescent changes with various IP series, pyrophosphate, and ATP.
We have developed a highly stable supported liquid membrane based on ionic liquids (ILs) for the separation of rare-earth metals, employing N,N-dioctyldiglycol amic acid as a mobile carrier. The quantitative transport of Y and Eu through the membrane was successfully attained, and separation from metal impurities, Zn, was efficiently accomplished. A membrane stable enough for long-term operatio...
Abstract The most common polymeric nanocomposites are constituted of organically-modified clays. Generally, these organic modifiers based on quaternary ammonium salts. These systems have as disadvantage the low thermal resistance its under processing. Ionic liquids (IL) with different molecular structures can be used modifier in lamellar clays-based nanocomposites, being promising not only to i...
Reaction of a series of linked diimidazolium dibromide salts with one-half equivalent of [Rh(mu-OAc)(COD)](2) under reflux conditions generates a series of carbene-anchored/pendent-imidazolium complexes, [RhBr(COD)((R)C(H)-eta(1)-C(eth))][Br] ((Me)C(H)-eta(1)-C(eth) = ethylene[(N-methyl)imidazolium][(N-methyl)imidazole-2-ylidene] and (tBu)C(H)-eta(1)-C(eth) = ethylene[(N-tert-butyl)imidazolium]...
Two naphthalene-diimide (NDI) bis-imidazolium salts have been used as N-heterocyclic carbene (NHC) precursors for the preparation of NDI-functionalized complexes rhodium and iridium general formula [MCl(NDI-NHC)(COD)] (M=Rh, Ir; NDI-NHC=NDI-functionalized NHC ligand). Comparison IR spectra [IrCl(NDI-NHC)(CO)2] their related one- two-electron reduced forms, reveal that each one-electron reductio...
The reductive elimination of 2-hydrocarbyl-imidazolium salts from hydrocarbyl-palladium complexes bearing N-heterocyclic carbene (NHC) ligands represents an important deactivation route for catalysts of this type. We have explored the influence that carbene N-substituents have on both the activation energy and the overall thermodynamics of the reductive elimination reaction using density functi...
An organic ionic crystal, 1-methyl-3-acetyl-imidazolium iodide (MA-II), was synthesized and applied into all-solid-state dye-sensitized solar cells as electrolyte material. We adopted 1-methyl-3-propylimidazolium tetra-fluoroborate as a crystal growth inhibitor, lithium bis-trifluoromethanesulfonylimide as a charge transport enhancer, and 4-tert-butyl pyridine as a carrier recombination inhibit...
Two iron piano-stool complexes containing NHC ligands equipped with hydroxyl-containing pendent arms (aliphatic and aromatic) have been prepared via deprotonation of the imidazolium salts with a strong base. Access to the anionic ligand is afforded with an additional equivalent of base when the wingtip contains a bulky phenol group. X-ray crystallography and DFT calculations demonstrate an appa...
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