High melting aliphatic precision polysulfones were prepared by bulk metathesis polycondensation using a unique, well-defined Grubbs ruthenium catalyst. Contrary to conventional Grubbs catalysis, this one tolerates high temperatures (200<sup>o </sup>C) that allowed efficient polymerization above the melting point of the semicrystalline polymer. This is a scalable approach to synthesizing high molecular weight precision aliphatic polysulfones, true materials. Note this bulk polycondensation is scalable chemistry, carried out in a manner similar to that for polyester, for example. Presently, we are investigating these precision materials as ion transport membranes.

High-temperature metathesis polycondensation chemistry

2019 Spring National Meeting

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