Syntheses, Crystal Structures and Properties of Two Supramolecular Coordination Polymers with 2,6-Pyridinedicarboxylic Acids and 4,4′-Bis(imidazolyl)biphenyl

Two supramolecular coordination polymers, [Cu(PDA)(4,4′-bibp)]n (1) and [Zn(PDA)(4,4′-bibp)]n (2) (PDA = 2,6-pyridinedicarboxylic acid and 4,4′-bibp = 4,4′-bis(imidazolyl)biphenyl), have been obtained under hydrothermal conditions. The two polymers were characterized by elemental analysis, IR spectroscopy and single-crystal X-ray diffraction analysis. The X-ray single crystal analysis revealed that two complexes exhibit different supramolecular architectures. The photocatalytic studies indicate complex 1 is a good candidate for the photocatalytic degradation of methylene blue, rhodamine B and methylene violet. The photoluminescence behaviour of complex 2 was also discussed.