Two Cdmium(II) Coordination Polymers as Luminescent Sensors for the Detection of Nitrofuran/Nitroimidazole Antibiotics

Two Cd(II) coordination polymers (CPs) have been assembled from the mixed ligands strategy of π-conjugated aromatic polycarboxylates and bis(imidazole) linkers, with the structures being 2-fold interpenetrating 3D bbf net for 1, and 2D hxl sheet for 2. And fluorescence measurements reveal that both Cd(II) CPs are promising luminescent sensors in the detection of nitrofuran/nitroimidazole antibiotics (ABXs) with low detection limits. Besides, the luminescence quenching of two Cd(II) CPs toward the ABXs were inverstigated by using DFT calculations and spectral overlap experiments.