Classified detection of antibiotics using FeO@Eu(BDC) as a fluorescent probe.

Background: In recent years, fluorescence sensing technology by rare-earth metal-organic frameworks (Ln-MOFs) as probes has garnered extensive attention in the domains of environmental quality testing, pollutant reduction, and biomolecule analysis because of its non-disruptive nature, rapid response, and high sensitivity. The research on aided magnetic controlling has further advanced the industrial value of Ln-MOFs, but the accomplishment of high specificity and rapid recovery still is a challenge for the magnetic Ln-MOFs in practical applications.

Results: A magnetic Ln-MOFs, FeO@Eu(BDC), doped with FeO using HBDC as the ligand and Eu as the central ion through co-precipitation, has been successfully synthesized.