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

Wan, Chao-Qun; Pang, Yue-Hong; Zhai, Yong-Shun; Shen, Xiao-Fang

doi:10.1016/j.saa.2023.122673

Cited by 2 publications

(1 citation statement)

References 37 publications

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“…Wan et al constructed a sensor using an amino-functionalized bismuth-based MOF (NH 2 –Bi-MOF) and bound it with copper ions for rapid fluorescence detection of glyphosate. The strong chelation of glyphosate with copper ions and its rapid interaction with NH 2 –Bi-MOF turn on the fluorescence signal, enabling quantitative glyphosate sensing . In these three reports, the release of free NH 2 –BDC ligands from the MOF structure played a crucial role as a fluorescence signal probe for luminescence turn-on-based sensing.…”

Section: Introductionmentioning

confidence: 99%

Ligand Emission-Based Turn-On Sensing of Glyphosate via Competitive Coordination with NH₂-MIL-88B (Fe) MOF Nanocrystals

Adusumalli,

Gupta,

Lee

et al. 2023

ACS Appl. Nano Mater.

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Glyphosate is one of the most effective herbicides and is extensively used in agriculture to improve crop production. However, its toxicity and carcinogenicity stimulate the development of potent, rapid, and highly selective sensors for glyphosate. In this study, we have successfully developed a rational and effective method for detecting glyphosate concentrations in the nanomolar range through luminescence enhancement. For this purpose, we synthesized NH2-MIL-88B (Fe) (MIL = Material Institute Lavoisier) metal–organic framework (MOF)-based nanocrystals (NCs) using the hydrothermal method and applied it for glyphosate detection in an aqueous medium. The MOF NCs contain coordinative ligands (2-aminoterephthalic acid) and metal clusters. The Fe clusters act as luminescence quenchers, suppressing emission from the MOF due to photoinduced electron transfer (PET) from the ligand to Fe3+ ions. The phosphate group of glyphosate competes with the carboxylate of the ligand in the MOF. As a result, the coordination between ligand molecules and Fe metal clusters in the MOF weakens, causing the ligand molecules to separate from the Fe cluster. This process diminishes the PET and regenerates the ligand emission at 450 nm. The luminescence enhancement exhibits high selectivity toward glyphosate and shows minimal interference from various pesticides and metal ions. The limit of detection was calculated as 198 nM, and the performance of the detection probe was evaluated in drinking water. Finally, MOF NCs-coated circular paper strips were prepared and successfully applied to detect glyphosate at femtomolar concentrations.

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Section: Introductionmentioning

confidence: 99%

Ligand Emission-Based Turn-On Sensing of Glyphosate via Competitive Coordination with NH₂-MIL-88B (Fe) MOF Nanocrystals

Adusumalli,

Gupta,

Lee

et al. 2023

ACS Appl. Nano Mater.

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Nitrogen-doped carbon dots as efficient turn-on fluorescent probe for assay of organophosphorus pesticides

Zhang,

Chu,

Tao

et al. 2024

ChemPhysMater

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

Cited by 2 publications

References 37 publications

Ligand Emission-Based Turn-On Sensing of Glyphosate via Competitive Coordination with NH₂-MIL-88B (Fe) MOF Nanocrystals

Ligand Emission-Based Turn-On Sensing of Glyphosate via Competitive Coordination with NH₂-MIL-88B (Fe) MOF Nanocrystals

Nitrogen-doped carbon dots as efficient turn-on fluorescent probe for assay of organophosphorus pesticides

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

Cited by 2 publications

References 37 publications

Ligand Emission-Based Turn-On Sensing of Glyphosate via Competitive Coordination with NH2-MIL-88B (Fe) MOF Nanocrystals

Ligand Emission-Based Turn-On Sensing of Glyphosate via Competitive Coordination with NH2-MIL-88B (Fe) MOF Nanocrystals

Nitrogen-doped carbon dots as efficient turn-on fluorescent probe for assay of organophosphorus pesticides

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Product

Resources

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Ligand Emission-Based Turn-On Sensing of Glyphosate via Competitive Coordination with NH₂-MIL-88B (Fe) MOF Nanocrystals

Ligand Emission-Based Turn-On Sensing of Glyphosate via Competitive Coordination with NH₂-MIL-88B (Fe) MOF Nanocrystals