Pyridine-containing polymers have attracted much attention in recent years due to the Lewis basic nitrogen present in the repeat unit, which imparts unique properties to soft materials. These properties have been harnessed for applications ranging from metal capture to the use as precursors to polyelectrolytes. In this talk, the synthesis and controlled polymerization of pyridinonorbornenes will be presented. Capitalizing on heterocyclic aryne chemistry, a key [4 + 2] cycloaddition between 2,3-pyridynes and cyclopentadiene enabled the streamlined access to these unique pyridine-containing monomers. Ring-opening metathesis polymerization of pyridinonorbornenes with living character was achieved through the fine-tuning of the monomer design. This allowed for the production of poly(pyridinonorbornene)s with predictable molar masses and narrow dispersities, and chain-extension to afford block copolymers. The properties and applications of these polydentate polymers will be highlighted, as well as their transformation into polyelectrolytes.

Pyridinonorbornenes as a unique platform for the precise synthesis of pyridine-containing polymers

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