Six new lanthanide metal-organic frameworks as luminescent sensors for the detection of 1-N, TDGA, UA, and HA in urine

摘要

The hydrothermal reaction of Ln(NO3)(3)center dot 6H(2)O with H(2)tyia (H(2)tyia = 5-(triazol-1-yl) isophthalic acid) afforded the lanthanide organic frameworks (Ln-MOFs), [Eu-2(tyia)(3)(H2O)(3)](n) (1) and {[Ln(2)(tyia)(3)center dot(H2O)(3)]center dot 3H(2)O}(n) (Ln = Tb 2, Dy 3, Sm 4, Gd 5, and Nd 6). Compounds were characterized by routine methods: PXRD, elemental analysis, solid-state luminescence properties analysis, TGA, FT-IR, and single-crystal X-ray crystallography. In this work, the luminescent properties of 2, 4, 5, and 6 and the responsiveness of various chemical components contained in urine were investigated. These MOFs detect 1-naphthol (1-N), urinary thiodiglycolic acid (TDGA), uric acid (UA), and hippuric acid (HA), which are the final metabolites of carbaryl, vinyl chloride monomers, purine, and toluene, respectively. These new Ln-MOFs offer the potential for biomarkers or metabolic sensors and show excellent selective and sensitive luminescence detection of 1-N, TDGA, UA, and HA.