Ratio fluorescence test strip visualized by amino-functionalized metal-organic framework for rapid sensing of glyphosate.

As glyphosate is a broad-spectrum herbicide extensively used in agriculture worldwide, rapid glyphosate detection is essential for food safety and human health. Herein, a ratio fluorescence test strip was prepared and coupled with an amino-functionalized bismuth-based metal-organic framework (NH-Bi-MOF) that bonded with copper ion for rapid visualization and determination of glyphosate. NH-Bi-MOF had excellent fluorescence performance, and the copper ion, a Lewis acid, was selected as the quencher.