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A dysprosium( iii ) organic framework, {[Dy(H 2 O)(BTCTB)]·2H 2 O}  n   ( 1 , H 3 BTCTB = 3,3′,3′′-[1,3,5-benzenetriyltris(carbonylimino)]tris-benzoic acid), was synthesized through the hydrothermal reaction of Dy(NO 3 ) 3  with the C 3 -symmetric organic ligand H 3 BTCTB at 160°C for 96 h. At the same time, the sensitivity of picric acid in water medium was tested with material  1  as the fluorescent sensor. The detection limit was 0.71 µM and  K  SV  of this experiment was 8.55 × 10 4  M −1 , which might be attributed to the presence of abundant amide groups in the framework of  1 . In addition, the treatment effect of compound  1  against the NCI-H292 lung cancer cells was evaluated. The Cell Counting Kit-8 (CCK-8) method was conducted to measure the viability of cancer cell after treated through the compound  1 . The DCFH-DA was applied for the determination of ROS. The relative expression of the inflammatory genes was measured with RT-PCR. The western blotting was conducted to detect the effect of the compound against MDM-2 levels in NCI-H292 lung cancer cells. The possible binding interactions in terms of binding poses are probed by performing molecular docking simulations.

A Dy( iii )–organic framework as a fluorescent probe for highly selective detection of picric acid and treatment activity on human lung cancer cells