Abstract
ABSTRACTAntibiotic pollution in hydrophytic ecosystems has aroused widespread notice due to its adverse impact on both the ecological environment and human physical well‐being. Thus, the development of effective antibiotic detection materials is not only urgently needed but is also challenging. Herein, the luminescent metal–organic framework [Mn3/2(HBCTC)·5H2O] (1) was successfully synthesized based on [9,9′‐bicarbazole]‐3,3′,6,6′‐tetracarboxylic acid (H4BCTC) under solvothermal conditions. Compound 1 can be employed as a fluorescent probe to detect antibiotic difloxacin hydrochloride (DIF) in water, demonstrating a remarkable linear relationship between fluorescence intensity ratio I0/I and the concentration of DIF (0–40 μM), with Ksv of 79,405 M−1 and LOD of 114 nM. More importantly, 1 represents the first fluorescent sensing material based on MOF for the detection of DIF, exhibiting exceptional selectivity, sensitivity, and anti‐interference capability. Furthermore, the mechanism of fluorescence quenching was studied comprehensively.
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