Organic Paramagnetic Ionic Liquids Based on Anion Containing 2,2,6,6-Tetramethyl-1-piperidinyloxyl Radical Moiety

Abstract A series of genuine organic paramagnetic ionic liquids were prepared utilizing 2,2,6,6-tetramethyl-1-piperidinyloxyl-4-sulfate (TEMPO-OSO3) anion with S=1⁄2 radical spin. Their static susceptibilities and EPR spectra can be explained in terms of the paramagnetic spins on the TEMPO radical moieties, although they have much low fluidities and ionic conductivities.