A Water‐Stable Terbium(III)–Organic Framework as a Chemosensor for Inorganic Ions, Nitro‐Containing Compounds and Antibiotics in Aqueous Solutions

• Published in: Chemistry, an Asian journal Vol. 14; no. 20; pp. 3694 - 3701
• Main Authors: Wei, Jun‐Hua, Yi, Jing‐Wei, Han, Min‐Le, Li, Bo, Liu, Shan, Wu, Ya‐Pan, Ma, Lu‐Fang, Li, Dong‐Sheng
• Format: Journal Article
• Language: English
• Published: Germany Wiley Subscription Services, Inc 15.10.2019
• Subjects: Antibiotics; Aqueous solutions; Chemical sensors; Chemistry; Chemoreceptors; Environmental protection; Ferric ions; Fluorescence; metal ions; Metal-organic frameworks; nitroaromatic explosives; Pollutants; Reagents; Selectivity; sensing; Terbium; sensing; nitroaromatic explosives; antibiotics; metal ions; metal-organic frameworks
• ISSN: 1861-4728; 1861-471X; 1861-471X
• DOI: 10.1002/asia.201900706

Effective detection of organic/inorganic pollutants, such as antibiotics, nitro‐compounds, excessive Fe3+ and MnO4−, is crucial for human health and environmental protection. Here, a new terbium(III)–organic framework, namely [Tb(TATAB)(H2O)]⋅2H2O (Tb‐MOF, H3TATAB=4,4′,4′′‐s‐triazine‐1,3,5‐triyltri‐m‐aminobenzoic acid), was assembled and characterized. The Tb‐MOF exhibits a water‐stable 3D bnn framework. Due to the existence of competitive absorption, Tb‐MOF has a high selectivity for detecting Fe3+, MnO4−, 4‐nirophenol and nitroimidazole (ronidazole, metronidazole, dimetridazole, ornidazole) in aqueous through luminescent quenching. The results suggest that Tb‐MOF is a simple and reliable reagent with multiple sensor responses in practical applications. To the best of our knowledge, this work represents the first TbIII‐based MOF as an efficient fluorescent sensor for detecting metal ions, inorganic anions, nitro‐compounds, and antibiotics simultaneously. Getting more responses: Multi‐responsive luminescent sensing for the recognition of different analytes at the molecular level is achieved using a TbIII‐based metal–organic framework (Tb‐MOF).