Highly Luminescent Lanthanide Metal–Organic Frameworks for Trace Detection of Norfloxacin
Lu Sun, Qing Liu, Song Dang, Jiangtao Jia
Abstract
Highly sensitive and selective detection of trace norfloxacin (NOR) in aqueous media was rarely reported by MOFs. Herein, a specific 2D TbMOF (terbium metal–organic framework) with outstanding luminescent properties was synthesized through simple bottom-up solvent-thermal methods. It exhibited prominent selectivity and stability toward NOR in ethanol through luminescence quenching with a K sv value of 4.8 × 10 4 M –1 and a limit of detection of 0.14 μM. In addition to the low detection limit and high selectivity, the TbMOF prepared in this work also has a fast response time of less than 10 s, making it superior to other MOF-based luminescent sensors, which indicated the excellent sensitivity of our materials toward NOR at very low concentrations.