Rational construction of donor–acceptor covalent heptazine polymers for efficient photocatalytic N2 reduction to NH3

Abstract

Three novel donor–acceptor covalent heptazine polymers were rationally constructed by regulating the donor and the electronic structure of the acceptor. The results show that the photocatalytic N₂ reduction to NH₃ of Cy-Tq is up to 562 µmol g⁻¹ h⁻¹ through an alternating association mechanism.