Cyclic phosphonium ionic liquids
نویسندگان
چکیده
Ionic liquids (ILs) incorporating cyclic phosphonium cations are a novel category of materials. We report here on the synthesis and characterization of four new cyclic phosphonium bis(trifluoromethylsulfonyl)amide ILs with aliphatic and aromatic pendant groups. In addition to the syntheses of these novel materials, we report on a comparison of their properties with their ammonium congeners. These exemplars are slightly less conductive and have slightly smaller self-diffusion coefficients than their cyclic ammonium congeners.
منابع مشابه
Protic ionic liquids based on phosphonium cations: comparison with ammonium analogues.
Novel protic ionic liquids (PILs) based on a tributyl phosphonium cation have been synthesised and characterised, revealing that the phosphonium based ILs show high thermal stability, high ionic conductivity and facile proton reduction compared to the corresponding ammonium based ILs.
متن کاملHighly fluorinated phosphonium ionic liquids: novel media for the generation of superhydrophobic coatings.
A new class of highly fluorinated phosphonium ionic liquids (HFPILs) that are thermally stable, non-volatile, tuneable small molecules has been synthesized; they are uniquely suited for creating novel superhydrophobic coatings, offering a new paradigm in the application of ionic liquids.
متن کاملOn the electrodeposition of titanium in ionic liquids.
The ability to electrodeposit titanium at low temperatures would be an important breakthrough for making corrosion resistant layers on a variety of technically important materials. Ionic liquids have often been considered as suitable solvents for the electrodeposition of titanium. In the present paper we have extensively investigated whether titanium can be electrodeposited from its halides (Ti...
متن کاملUnderstanding the impact of the central atom on the ionic liquid behavior: phosphonium vs ammonium cations.
The influence of the cation's central atom in the behavior of pairs of ammonium- and phosphonium-based ionic liquids was investigated through the measurement of densities, viscosities, melting temperatures, activity coefficients at infinite dilution, refractive indices, and toxicity against Vibrio fischeri. All the properties investigated are affected by the cation's central atom nature, with a...
متن کاملSolvation dynamics in imidazolium and phosphonium ionic liquids: Effects of solute motion
Experimental and simulation results of solvation dynamics in ionic liquids have so far been explained in terms of translational motion of the ions constituting the ionic liquids under investigation. A recent theoretical study [Kashyap & Biswas, J Phys Chem B, 114 (2010) 254] has indicated that while translational motion of the constituent ions is indeed responsible for Stokes’ shift dynamics of...
متن کامل