A lanthanide metal-organic framework as ratio fluorescence probe to detect pesticides in water

Developing an excellent recognition detector to pesticides is important and challenging. Herein, a water-stable 3D metal-organic framework (MOF), namely [Tb(L)(2)NO3](n) (HL = 3.5-bis (triazol-1-yl) benzoic acid), has been prepared under the solvothemal condition and characterized by element analysis, single-crystal X-ray diffraction, Powder X-ray diffraction (PXRD) and thermogravimetric analysis. Under 2D decoded map with ratio fluorescence, various pesticides are distinguished. Tb-MOF is an ideal fluorescence material that can detect glyphosate with high selectivity, sensitivity and excellent recyclability. And the limit of detection of glyphosate is 0.0144 mu M in the range of 0-630 mu M. This work provides a valuable platform for further detection and identification of the pesticides.

Automated summary

In this study, a water-stable 3D metal-organic framework (MOF) has been successfully synthesized and used to distinguish various pesticides, particularly for detecting glyphosate. The material demonstrates high selectivity, sensitivity, and recyclability for glyphosate detection.