Preparation of metallocene containing cationic polymers for anion exchange applications
AssigneeUniversity of South Carolina
InventorsChuanbing Tang, Tianyu Zhu
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Abstract
Chemically inert, mechanically tough, cationic metallo-polyelectrolytes designed as durable anion-exchange membranes (AEMs) via ring-opening metathesis polymerization (ROMP) of cobaltocenium-containing cyclooctene with triazole as the only linker group, followed by backbone hydrogenation to provide a new class of AEMs with a polyethylene-like framework and alkaline-stable cobaltocenium cation for ion transport, which exhibit excellent thermal, chemical and mechanical stability, as well as high ion conductivity.
Claims14
An anion-exchange membrane comprising:
- a cationic metallo-polyelectrolyte comprising a polymer backbone with a triazole group linker between the polymer backbone and cobaltocenium;
- and
- wherein the anion-exchange membrane has a polyethylene-like framework and alkaline-stable cobaltocenium for ion transport.
A method for preparing an anion-exchange membrane comprising:
- performing a catalyzed click reaction to attach cobaltocenium onto a cycloalkene monomer to provide a cycloalkene attached to the cobaltocenium with a triazole linker group;
- performing ring opening metathesis polymerization of the cobaltocenium containing cycloalkene and the cycloalkene to provide a cobaltocenium containing copolymer;
- performing backbone hydrogenation of the cobaltocenium containing copolymer to provide a hydrogenated cobaltocenium containing copolymer;
- and
- producing a polyethylene-like framework and alkaline-stable cobaltocenium cation for ion transport from the hydrogenated cobaltocenium containing copolymer.
Dependencies are inferred from the claim text.