Visible‐Light‐Driven Photocatalysts of Two Copper(II) Coordination Polymers with Rare Sulfonate and Imidazole Co‐Ligand System

Abstract

AbstractTwo copper coordination polymers (CPs) [Cu(1,2‐BIYB)2(AQ‐2,6‐DA)]n·nH2O (1) and [Cu(1,4‐BIYB)2(AQ‐2,7‐DA)]n·3nH2O (2) were obtained by reactions of pentahydrate copper sulfate with corresponding sulfonate and imidazole ligand under hydrothermal conditions, respectively [Na2AQ‐2,7‐DA = anthraquinone‐2,7‐disulfonic acid disodium salt, Na2AQ‐2,6‐DA = anthraquinone‐2,6‐disulfonic acid disodium salt, 1,4‐BIYB = 1,4‐bis(imidazol‐1‐ylmethyl)benzene, 1,2‐BIYB = 1,2‐bis(imidazol‐1‐ylmethyl)benzene]. CPs 1 and 2 show different structures: CP 1 has a 2D architecture, which is further extended into a 3D supramolecular structure through hydrogen bonding interactions, whereas CP 2 has a 1D architecture, which generates a 3D supramolecular structure via hydrogen bonding and strong π···π interaction. Notably, CPs 1 and 2 feature rare examples of CPs based visible‐light‐driven photocatalysts and reveal good stability toward photocatalysis.