Citation: Shuwen SUN, Gaofeng WANG. Design and synthesis of a Zn(Ⅱ)-based coordination polymer as a fluorescent probe for trace monitoring 2, 4, 6-trinitrophenol[J]. Chinese Journal of Inorganic Chemistry, ;2025, 41(4): 753-760. doi: 10.11862/CJIC.20240399 shu

Design and synthesis of a Zn(Ⅱ)-based coordination polymer as a fluorescent probe for trace monitoring 2, 4, 6-trinitrophenol

Shuwen SUN ,
Gaofeng WANG ^,

Department of Applied Chemistry, Yuncheng University, Yuncheng, Shanxi 044000, China

Corresponding author: Gaofeng WANG, wgf1979@126.com
Received Date: 7 November 2024
Revised Date: 24 February 2025

Figures(9)

A Zn(Ⅱ)-based coordination polymer (CP), {[Zn₂(bdc)₂(mfdp)]₂·4DMA·2Me₂NH·3H₂O}_n (1), was synthesized by solvothermal method based on H₂bdc and mfdp, where H₂bdc=1, 4-benzenedicarboxylic acid, mfdp=2, 7-bis (4-pyridyl)-9, 9-dimethylfluorene, and DMA=N, N-dimethylacetamide. It was characterized by FTIR, elemental analysis, TGA, and single-crystal X-ray diffraction. In 1, two adjacent zinc ions lie in the same {ZnNO₄} geometrical configurations, forming a paddle-wheel building block. Complex 1 displays 2-fold interpenetrating frameworks with {4¹²· 6³} topology and with the emission peak situated at 385 nm, which offers a good foundation to be integrated as a chemical sensor. The fluorescence sensing experiments showed that the LOD (limit of detection) of 2, 4, 6-trinitrophenol (TNP) was 0.164 μmol·L^-1, and the quenching constant (K_SV) was 6.65×10⁴ L·mol^-1, indicating the excellent detection ability of trace analytes in DMA.
- fluorene,
- coordination polymers,
- Zn(Ⅱ),
- fluorescence probe,
- nitroaromatic compounds
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