(537i) Molecular Structure and Solvation Regimes of Ionic Liquids in Solution and Their Effects on Measured Thermodynamic and Transport Properties

Ionic liquids have been proposed in various chemical and physical processes due to their high tunability and unique chemical behavior. Yet, knowledge of their molecular behavior in solution and its relation to observed thermodynamic and transport properties is limited. In this study, we utilize a combination of experimental methods and molecular dynamics simulations to investigate the molecular phenomena governing the non-ideal behavior observed in several measured transport properties, with an emphasis on solution thermal conductivity. We employ several spectroscopic techniques to highlight the varying structural and solvation regimes attainable in mixtures of imidazolium ILs in solution with compressed gases such as difluoromethane, pentafluoroethane, and 1,1,1,2-tetrafluoroethane as well as other molecular solutes including dichloromethane and formamide.