Conduction Through Viscoelastic Phase in a Redox-Active Ionic Liquid at Reduced Temperatures
The phase diagram of the redox active ionic liquid 1-methyl-3-propylimidazolium iodide (PMII) is examined as a function of temperature and iodine concentration. Beyond a threshold concentration of 3.9 M, the formation of higher polyiodides gives rise to a viscoelastic phase upon cooling. Despite of the very high viscosity of such polyiodide-containing PMII melts a strikingly high conductivity is maintained through Grotthuss-type bond exchange and ionic conduction.
Keywords: ionic liquids ; liquid crystals ; conducting materials ; polyiodides ; mesophases ; viscoelastic phase ; Sensitized Solar-Cells ; Nuclear-Magnetic-Resonance ; Solvent-Free Electrolytes ; Charge-Transport ; Molten-Salts ; Diffusion ; Performance ; Couple ; Iodide
Record created on 2012-03-01, modified on 2016-08-09