Vinylene‐linked conjugated polymeric frameworks derived from 2,2′‐bipyridine for visible‐light‐driven H ₂ O ₂ generation

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Assembling various organic building blocks through carbon–carbon double‐bond linkages is highly efficient for constructing high‐performance organic semiconductors. Microporous/nanoporous structures can provide robust mass collection accommodation and reactive reaction sites. Here, we report the synthesis of a series of vinylene‐linked conjugated porous polymers by Knoevenagel condensation of a tetratopic monomer tetramethyl‐2,2′‐bipyridine with different ditopic monomers. The presence of the 2,2′‐bipyridine building blocks created π‐extended conjugation polymeric frameworks, substantial n ‐type semiconducting properties and coplanar conformation. These frameworks also exhibit strong electron‐deficient characters and finely tuned energy levels. Upon visible light irradiation, they exhibited the highest activity of hydrogen peroxide generation up to 1413 μmol h −1 g −1 in pure water. Their excellent recycling and reusability suggest their potential applications in green chemical transformation.