A major goal in the field of polymer science is to develop materials with superior recyclability and desirable stimuli-responsive, self-healing or adaptive properties. Exploration of novel dynamic bonding plays a central role in these efforts. Boron-containing covalent and non-covalent (dative) B-O and B-N motifs are emerging as versatile new motifs. Particularly attractive is the exceptional level of tunability of the dynamic covalent and non-covalent interactions of boranes by judicious variation of substituents on boron.<br/>Our group has developed versatile approaches for the selective and high-yielding attachment of borane Lewis acid functional groups to polyolefins, as well as pioneered the direct polymerization of Lewis acidic monomers. Here, we demonstrate applications of these polymeric Lewis acids as building blocks of self-healing network polymers and reprocessible elastomers. A new class of luminescent dynamic polymer networks via chelate complex formation will also be introduced.

Organoborane-functionalized polymers as building blocks in dynamic polymeric materials

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