A Zn-based coordination polymer as a luminescent sensor for simple and sensitive detecting of sulfonamides antibiotics and nitroaromatic

A Zn-based coordination polymer, namely [Zn(oba)(2()bpy)(2)] (1) (where oba = 4,4'-oxybisbenzoic acid, bpy = 4,4'-bipyridine) was prepared and applied as a highly sensitive chemical sensor for sulfonamides antibiotics and nitroaromatic compounds (NACs) in aqueous solutions, and exhibited excellent water stability in the pH range of pH = 4-10. Remarkably, 1 can effectively detect a series of sulfonamide antibiotics and NACs via electron transfer process. The detection limits were 1.016 x 10(-6) M and 2.82 x 10(-7) M for SMZ and TNP. Moreover, the proposed method was successfully applied for the determination of SMZ and TNP in synthetic urine and real water, respectively, and the satisfactory recoveries were 97.37-100.15% for SMZ and 97.26-99.51% for TNP. The stirring results indicate that 1 can serve as a promising multi-responsive luminescent sensor in various potential applications. Furthermore, the mechanisms for luminescent quenching towards these organic molecules were also clearly explained.