Triazine Based MOFs with Abundant N Sites for Selective Nitrobenzene Detection

Abstract High sensitivity and selectivity detection of nitrobenzene based on luminescence technology requires high density of functional sites. Due to the abundant functional N sites and good solubility in solvents, triazine derivative ligands are potential to construct frameworks as luminescence detection agent. Herein, a Pt 3 O 4 topology Zn‐MOF ( FJU‐120 ) based on 2‐amino‐4,6‐bis(4‐pyridine)‐1,3,5‐triazine(DAPT) and 1,3,5‐Tris‐(p‐carboxyphenyl)benzene (H 3 BTB) as dual‐ligands was synthesized for selective detection of nitrobenzene. FJU‐120 crystallizes in the cubic system and Pm n space group with a =27.5191(9), b =27.5191(9), c =27.5191(9) Å, β =90°, V =20840(2) Å 3 , Z =90, Mr =448.72, Dc =0.429 g/cm 3 , F (000)=2736. FJU‐120 shows selective fluorescence quenching behavior with nitrobenzene existing, and the corresponding constant is 1124.65 L mol −1 . This work reports a new potential crystalline porous material for toxic organic molecular fluorescence detection.