Two Stable Pillar-Layered Zn-LMOFs for Highly Fluorescence Sensing of Inorganic Pollutants and Nitro Aromatic Compounds in Water

作者：Xueyue Yu, Baobing Tang, Wen Li, Dan Wang, Tiantian Sun, Lirong Zhang, Yunling Liu · 发表于：Inorganic Chemistry · 年份：2024 · DOI：10.1021/acs.inorgchem.4c02904 · 被引用次数：22 · 研究领域：Metal-Organic Frameworks: Synthesis and Applications、Gas Sensing Nanomaterials and Sensors、Luminescence and Fluorescent Materials

Luminescent metal–organic frameworks (LMOFs) are a potential class of functional materials for the photoluminescent detection of a wide range of analytes as well as for the detection of pollutants in wastewater. Herein, by using the pillar-layered strategy, two new luminescence Zn-LMOFs ( JLU-MOF222 and JLU-MOF223 ) were successfully solvothermal synthesized. The 2D layers are both consisting of Zn 2+ and TPHC [TPHC = (1,1′:2′,1″-terphenyl)-3,3″,4,4′,4″,5′-hexacarboxylic acid] ligands and then pillared by the different N-donor ligands to form the 3D Zn-LMOFs with fsh topology. Benefiting from the uncoordinated carboxylate sites, uncoordinated N atom, or -NH 2 group in the pillaring ligands and excellent stability in pH = 2–13 aqueous phase, JLU-MOF222 and JLU-MOF223 not only can sensitively detect trace amounts of inorganic pollutants (Fe 3+, Cr 2 O 7 2– ) and nitro aromatic compounds TNP and 2,4-DNP (TNP = 2,4,6- trinitrophenol, 2,4-DNP = 2,4-dinitrophenol) through luminescence quenching but also exhibit high selectivity of other anti-interference competing analytes. The two new Zn-LMOFs can be used as potential luminescent sensors for pollutant detection in water due to their high K SV and low limit of detection (LOD).