Triazine Based MOFs with Abundant N Sites for Selective Nitrobenzene Detection

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 Pt3O4 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 (H3BTB) as dual-ligands was synthesized for selective detection of nitrobenzene. FJU-120 crystallizes in the cubic system and Pm3? n space group with a=27.5191(9), b=27.5191(9), c=27.5191(9) angstrom, beta=90 degrees, V=20840(2) angstrom(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 KSV constant is 1124.65 L mol(-1). This work reports a new potential crystalline porous material for toxic organic molecular fluorescence detection.

Automated summary

Utilizing a high density of functional sites, a new crystalline porous material FJU-120 was constructed with triazine derivative ligands for selective detection of nitrobenzene and exhibited fluorescence quenching behavior.