Chemical Research in Chinese Universities ›› 2023, Vol. 39 ›› Issue (2): 305-309.doi: 10.1007/s40242-022-2239-y

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A Luminescent Metal-Organic Framework with LON Topology for Highly Effective Fluorescence Sensing of Fe3+ and TNP

GU Yu1, LIN Rui1, LUO Xiaolong1,2, LIU Yunling2   

  1. 1. Advanced Institute of Materials Science, School of Chemistry and Life Science, Changchun University of Technology, Changchun 130012, P. R. China;
    2. State Key Laboratory of Inorganic Synthesis&Preparative Chemistry, Jilin University, Changchun 130012, P. R. China
  • Received:2022-07-19 Online:2023-04-01 Published:2023-03-16
  • Contact: LUO Xiaolong, LIU Yunling E-mail:lluoxiaolong@ccut.edu.cn;yunling@jlu.edu.cn
  • Supported by:
    This work was supported by the National Natural Science Foundation of China (No.21901021), the Program of Jilin Provincial Science & Technology Department, China(No.20200201242JC), and the China Postdoctoral Science Foundation (No.2021T140256).

Abstract: Aluminescent Ag-based metal-organic framework(1) has been synthesized and its structure has been characterized. Compound 1 was fabricated using the Ag+ and bbimb2‒ ligands and manifestes a rare LON topology. Compound 1 is selective not only in detecting traces of Fe3+ and 2,4,6-trinitrophenol(TNP) via luminescence quenching, but also demonstrates high selectivity in the presence of other competitors. Compound 1’s Ksv values towards Fe3+ can reach as high as 9.3×103 L/mol, which is higher than those of several other MOF materials. It is also a recyclable luminous sensor with the potential to be utilized for detecting TNP. Hence, based on its characteristics, compound 1 can be regarded as a prospective luminescence sensor for detecting Fe3+ and TNP.

Key words: Metal-organic framework, Fluorescence quenching, Fe3+, 2,4,6-Trinitrophenol(TNP)