Abstract
Effective detection of contaminants in water, such as pesticides, excess Fe3+ and MnO4−, is critical to human health and environmental protection. They can be quantitatively detected by a new luminescent sensor based on a water stable europium metal-organic framework (Eu-MOF). The dual nucleus Eu-MOF is connected by L6−ligands through μ6: η1, η2, η3, η3, η4, η5 coordination to form a 2D wavy network, and then expands into a three-dimensional structure through ligand L6− connection. Due to its high water stability and multiple emission centers, the Eu-MOF can be used as luminescence sensors for pollutants in water. Eu-MOF exhibits high selectivity for Fe3+, MnO4−, and nicosulfuron (NSF) in water through luminescence quenching with low detection limit, and fast response, indicating that Eu-MOF is a reliable analysis platform for multi-responsive sensing.
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