Water-Stable Cd(II)-Based Metal-Organic Framework: Antibiotic Detection and Photochromism Behavior

Solvothermalreaction of cadmium nitrate with a polypyridine-containingligand tetra(pyridine-4-yl)benzene-1,4-diamine (TBD) gives rise toa novel Cd(II)-organic framework with the 3D interpenetrated architecture[Cd(TBD) (NO3)(2)& BULL;DMA](1) (DMA= N,N-dimethylacetamide). The stabilitytest is performed on compound 1, which shows that theCd-MOF can be quite stable in water and even harsh conditions. A photoluminescencestudy has been investigated on 1. Remarkably, nitrofurantoin,as a kind of antibiotic, has a great quenching effect on the luminescentperformance of the prepared hybrid, suggesting that compound 1 can be regarded as an effective chemical sensor to detectspecific analytes. The anti-interference test, recyclability examination,and sensing mechanism have been further conducted. Moreover, in virtueof the electron transfer from oxygen of NO3 (-) to nitrogen atoms of TBD, photochromism behavior can be easily realizedin compound 1. A3D water-stable Cd-MOF was constructed showing the antibioticdetection ability and photochromism behavior.