Synthesized and characterization of a new Cd(II)-based coordination polymer: Sensing activity and photocatalytic activity against antibiotic

A new coordination polymer (CP) with formula [Cd-4(2.2'-bipy)(4)(HL)(2)center dot H2O] (1) [H5L = 2,5'-di(3,5-dicarboylphenoxy) benzoic acid, 2.2'-bipy = 2.2'-bipyridine] has been synthesized. 1 is characterized by single X-ray diffraction, FT-IR, UV-visible spectroscopy and TGA. X-ray crystallography exposes that 1 crystallized in monoclinic space group with C2/c point group. (1) has intramolecular hydrogen bonding and 2D pillared-layer hydrogen-bonded organic frameworks (HOFs). 1 exhibits sensitive and selective detection for nitrofurazone (NFZ) (K-sv = 1.08 x 10(3) M-1 and LOD = 1.38 ppm). Moreover, the photocatalytic degradation properties of 1 are also investigated against NFZ. In addition, the plausible mechanism displayed by 1 for the catalytic degradation toward NFZ was proposed using the LC-MS studies. The Hirshfeld surfaces analysis revealed that the different types of intermolecular interactions (C center dot center dot center dot C, H center dot center dot center dot C, H center dot center dot center dot H, and O center dot center dot center dot H) are presented.