Solvation dynamics in ionic liquids, results from ps and fs emission spectroscopy

摘要: This chapter summarizes much of the data currently available on solvation dynamics in ionic liquids. Data show that complete solvent equilibration is slower high-viscosity solvents than it most conventional solvents. Attempts to correlate times with viscosities and ion diffusion constants suggest translational over small distances likely mechanism Despite slow overall response these systems, femtosecond Kerr-gated emission spectroscopy measurements also reveal significant relaxation. In some cases, may be clearly bimodal, but, liquids characterized by a remarkably broad distribution relaxation times. together number other experimental observations suggests glassy character Much more work, help from computer simulations theory, needed before satisfying understanding interesting new achieved.