4.6 Article

Efficient and selective fluorescence sensing of nitro-containing aromatic compounds by a binuclear lanthanide-based metal-organic framework

Journal

JOURNAL OF SOLID STATE CHEMISTRY
Volume 316, Issue -, Pages -

Publisher

ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jssc.2022.123568

Keywords

Metal-organic frameworks; Fluorescence sensing; Nitro-containing aromatic compounds; Tetraphenylethene; Selectivity

Funding

  1. National Natural Science Foundation of China [21901147, 21801156]
  2. Shandong Province Natural Science Foundation [ZR2018BB002]

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In this study, a lanthanide-based metal-organic framework was synthesized and exhibited excellent fluorescence activity, making it a sensitive and selective fluorescence sensor for p-nitroaniline.
The rapid and selective detection of the highly toxic and explosive nitro-containing aromatic compounds has been drawn more and more attention. Herein, a lanthanide-based metal-organic framework (1) was synthesized by incorporating a tetraphenylethylene moiety as the four-point connected node, and exhibits a three-dimensional porous material. This new synthesized MOF exhibits excellent fluorescence activity, due to the ligand-emission effect, and could be regarded as a sensitive and selective fluorescence sensor for p-nitroaniline (NA) over the nitro-containing aromatic compounds with almost complete fluorescence quenching after adding NA into the suspension system. The mechanism of fluorescence sensing process has been also researched by DFT studies and UV-vis adsorption spectra to gain an insight analysis.

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