title: Metal-cation-based anion exchange membranes.
abstract: Here we present the first metal-cation-based anion exchange membranes (AEMs), which were synthesized by copolymerization and cross-linking of a norbornene monomer functionalized with a water-soluble bis(terpyridine)ruthenium(II) complex and dicyclopentadiene. Each ruthenium complex has two associated counteranions, unlike most ammonium- and phosphonium-based membranes with single cation-anion pairs. The resulting AEMs show anion conductivities and mechanical properties comparable to those of traditional quaternary-ammonium-based AEMs as well as good alkaline stability and methanol tolerance. These results suggest that metal-cation-based polymers hold promise as a new class of materials for anion-conducting applications.
authors.affiliation: Department of Polymer Science and Engineering, University of Massachusetts, Amherst, Massachusetts 01003, United States.
authors.forename: Yongping
authors.initials: Y
authors.lastname: Zha
authors.forename: Melanie L
authors.initials: ML
authors.lastname: Disabb-Miller
authors.forename: Zachary D
authors.initials: ZD
authors.lastname: Johnson
authors.forename: Michael A
authors.initials: MA
authors.lastname: Hickner
authors.forename: Gregory N
authors.initials: GN
authors.lastname: Tew