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Abstract: Quantum-dots-doped covalent organic frameworks in a molecularly imprinted network (QDs-doped COFs@MIP) were developed for detection of nereistoxin (NRT)-related insecticide in tap water. The preparation of QDs-doped COFs@MIP was easy to accomplish via one-pot synthesis at room temperature. QDs-doped COFs@MIP quenched by targeting thiosultap due to the photoinduced charge transfer. A Brunauer-Emmett-Teller surface area of 186.20 m2 g-1 and a maximum adsorption capacity of 771 mg g-1 of the QDs-doped COFs@MIP exhibited good selectivity and adsorption capacity. Direct fluorescence determination was established over the range 5-100 μg L-1 (R2 = 0.9959) with a detection limit of 1.60 μg L-1. Furthermore, 86.5-106.5% recoveries of spiked tap water were achieved. The determination system was feasible for tracing the NRT-related insecticide with high accuracy and good repeatability and reproducibility
Template and target information: nereistoxin, NRT, nereistoxin-related insecticide
Author keywords: Two modalities determination, Molecularly imprinted polymers, Covalent organic frameworks, Quantum dots, Nereistoxin-related insecticide