Zhuo-Hao Jiao, Sheng-Li Hou, Xiao-Min Kang, Xiu-Pei Yang, Bin Zhao
Analytical chemistry 2021 May 04Due to the widespread use of dinotefuran around the world, its impact on food and environmental safety has aroused great concern, and the establishment of a rapid and convenient approach for dinotefuran detection is necessary but challenging. Herein, we synthesized a unique three-dimensional framework {[(CH3)2NH2]2[Cd3(BCP)2]·10H2O·3.5DMF}n (1). Single-crystal X-ray analysis indicates that 1 possesses a 4,8-connected anion framework that corresponds to alb topology, with a one-dimensional rectangular channel along the c-axis with the size of 4 Å × 10 Å. Compound 1 displays satisfactory solvent and thermal stability. Luminescent investigations reveal that 1 can selectively detect dinotefuran by fluorescence quenching among other pesticides, displaying excellent anti-interference performance with common ions in water. Importantly, the limit of detection is as low as 2.09 ppm, which is far below the residual concentration of the U.S. food standard. A fluorescence quenching mechanism study shows that there exists competitive energy absorption and static quenching processes. To our knowledge, 1 is the first MOF-based fluorescence probe for dinotefuran detection.
Zhuo-Hao Jiao, Sheng-Li Hou, Xiao-Min Kang, Xiu-Pei Yang, Bin Zhao. Recyclable Luminescence Sensor for Dinotefuran in Water by Stable Cadmium-Organic Framework. Analytical chemistry. 2021 May 04;93(17):6599-6603
PMID: 33871967
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