A luminescent metal–organic framework as an ideal chemosensor for nitroaromatic compounds

A luminescent two-dimensional metal–organic framework, [(Pr₂(TATMA)₂)·4DMF·4H₂O]_n (1), was solvothermally synthesized based on the semi-rigid organic ligand 4,4′,4′′-s-triazine-1,3,5-triyltri-m-aminobenzoate (H₃TATMA). 1 possesses binuclear {Pr₂(COO)₆} subunits and fully deprotonated TATMA³⁻ organic ligands, which can be further simplified into a 3,6-connected kgd topology with the Schläfli symbol of (4³)₂(4⁶·6⁶·8³). More importantly, 1 displays fast and reversible solid-state detection of nitroaromatic compounds, especially for TNP, via a luminescence response.