Hydrogen bonded ionic liquids (ILs) exhibit complex dynamics and are relevant in CO<sub>2</sub> capture applications. Understanding why hydrogen bonded IL system viscosities differ significantly from non-hydrogen bonded IL systems requires consideration of molecular-level properties that govern transport and dynamics. We hypothesize that viscosity can be described using the Compensated Arrhenius Formalism (CAF), which models viscosity as a thermally activated process. CAF results include an activation energy (Ea) representing the energy barrier molecules must surmount for transport to occur. We present CAF results and compare Ea values for hydrogen bonded and non-hydrogen bonded imidazolium based ILs, showing that the CAF system can help identify differences between hydrogen bonded versus non-hydrogen bonded IL systems’ dynamics.

Using the compensated Arrhenius formalism to investigate viscosity trends in imidazolium based ionic liquids with varying degrees of hydrogen bonding

Macromolecular Chemistry: The Second Century

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ACS Spring 2020 National Meeting & Expo

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.