Ionic liquid-containing polymers continue to be a very interesting topic due to their potential applicability in various electronic devices and as gas separation membranes. Imidazolium-containing polymers in particular are unique in that there is a high degree of flexibility in the ways in which the cationic group can be placed into polymeric architectures. In this presentation, we will discuss our work in the area of urethane-containing ionenes (ionic polymers where the IL group is a part of the repeating unit). These urethanes are unique in that they are prepared using a non-isocyanate route, allowing for greater flexibility between the linkage groups, in addition to the counteranion choice. In short, imidazole-terminated, urethane-containing compounds were polymerized in a step-growth fashion using different dihalide-terminated monomers, creating urethane ionenes. These ionenes were analyzed for their thermal and conductive properties, and <i>T</i><sub>g</sub> was found to be the main driving force in dictating polymer conductivity. Furthermore, select urethanes were further incorporated into semi-interpenetrating networks using a photopolymerization strategy, of which our progress towards 3D printable materials will be briefly discussed.

Urethane-containing Ionenes: Using a non-isocyanate route to create conductive polymers

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