Design and Synthesis of Imidazolium-Mediated Tröger’s Base-Containing Ionene Polymers for Advanced CO2 Separation Membranes

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dc.contributor.author Jason, Bara
dc.contributor.author Kammakakam, Irshad en_US
dc.contributor.author O’Harra, Kathryn E. en_US
dc.contributor.author Jackson, E. en_US
dc.date.accessioned 2019-09-04T14:33:15Z
dc.date.available 2019-09-04T14:33:15Z
dc.date.copyright 2019
dc.date.issued 2019-02-15
dc.identifier.citation Kammakakam, I., O’Harra, K., Bara, J., Jackson, E. (2019): Design and Synthesis of Imidazolium-Mediated Tröger’s Base-Containing Ionene Polymers for Advanced CO2 Separation Membranes. ACS Omega, 4(2). DOI: https://dx.doi.org/10.1021%2Facsomega.8b03700 en_US
dc.identifier.uri http://ir.ua.edu/handle/123456789/6230
dc.description.abstract It is highly desirable to integrate the CO_2 solubility benefits of ionic liquids (ILs) in polymeric membrane systems for effective CO_2 separations. Herein, we are exclusively exploring a series of four novel imidazolium-mediated Tröger’s base (TB)-containing ionene polymers for enhanced CO_2 separation. The two diimidazole-functionalized Tröger’s base monomers synthesized from “ortho”- and “para”-substituted imidazole anilines were polymerized with equimolar amounts of two different aromatic and aliphatic comonomers (α,α´ -dichloro-p-xylene and 1,10-dibromodecane, respectively) via Menshutkin reactions to obtain four respective ionene polymers (I'm-TB (o&p)-Xy] [Cl] and ([Im-TB(o&p)-C_10] [Br], respectively). The resulting ionene polymers having halide anions were exchanged with [Tf_2N]¯ anions, yielding a novel Tröger’s base material [Im-TB(x)-R] [Tf_2N] or “Im-TB-Ionenes”. The structural and physical properties as well as the gas separation behaviors of the copolymers of aromatic and aliphatic Im-TB-Ionenes have been extensively investigated with respect to the regiochemistry of imidazolium groups at the ortho and para positions of the TB unit. The imidazolium-mediated TB-Ionenes showed high CO_2 solubility and hence an excellent CO_2/CH_2 permselectivity of 82.5. The Im-TBIonenes also displayed good thermal and mechanical stabilities. en_US
dc.format.mimetype application/PDF en_US
dc.language English en_US
dc.rights.uri https://pubs.acs.org/page/policy/authorchoice_termsofuse.html
dc.subject Separation membranes en_US
dc.subject Tröger’s Base en_US
dc.title Design and Synthesis of Imidazolium-Mediated Tröger’s Base-Containing Ionene Polymers for Advanced CO2 Separation Membranes en_US
dc.type text en_US
dc.rights.holder American Chemical Society en_US


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