Room-temperature ionic liquids: slow dynamics, viscosity, and the red edge effect.
Ionic liquids (ILs) have recently attracted significant attention from academic and industrial sources. This is because, while their vapor pressures are negligible, many of them are liquids at room temperature and can dissolve a wide range of polar and nonpolar organic and inorganic molecules. In this Account, we discuss the progress of our laboratory in understanding the dynamics, spectroscopy, and fluid dynamics of selected imidazolium-based ILs using computational and analytical tools that we have recently developed. Our results indicate that the red edge effect, the non-Newtonian behavior, and the existence of locally heterogeneous environments on a time scale relevant to chemical and photochemical reactivity are closely linked to the viscosity and highly structured character of these liquids.
Department of Chemistry, University of Iowa, Iowa City, Iowa 52242, USA.
Zhonghan
Z
Hu
Claudio J
CJ
Margulis
D003198:Computer Simulation; D052578:Ionic Liquids / Q000737:chemistry*; D008956:Models, Chemical; D008958:Models, Molecular; D010777:Photochemistry; D013696:Temperature; D013997:Time Factors; D014783:Viscosity
D052578:Ionic Liquids