Interactions of Aprotic and Functionalized Ionic Liquids with Radicals

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The project focuses on interaction of ionic liquids with dissolved substances using selected radicals as models for reactive species formed during chemical reactions in ionic liquids. In order to understand the interaction of ionic liquids with radicals, the chemical structure of the ionic liquids will be varied by selection of both various cations and anions on the one hand and by employing different polar spin probes and polymer radicals on the other hand. ESR spectroscopic investigations of different polar spin probes dissolved in ionic liquids will give information about micropolarity as well as microviscosity effects of the ionic liquids. Further information about the interaction of ionic liquids with radicals will be obtained studying the time dependent concentration of polymer radicals formed by thermal or photoinduced initiation. The behavior of the small spin probes and the significantly larger polymer radicals in the ionic liquids will be compared regarding similarities and differences in the interaction of ionic liquids with radicals of different size. Viscosity measurements on pure ionic liquids and polymerizing systems will connect macroscopic and microscopic properties of ionic liquids using hydrodynamic and quasihydrodynamic models in order to understand the interaction of ionic liquids with radicals as examples for dissolved substances.