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. Graphical abstract . .

中文翻译：

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通过分子印迹网络中量子点掺杂的共价有机框架测定奈瑞斯毒素相关杀虫剂

开发了分子印迹网络中的量子点掺杂共价有机框架（QDs 掺杂 COFs@MIP），用于检测自来水中的奈瑞斯毒素（NRT）相关杀虫剂。量子点掺杂的 COFs@MIP 的制备很容易通过室温下的一锅法合成来完成。由于光诱导的电荷转移，QDs掺杂的COFs@MIP通过靶向硫磺脲猝灭。Brunauer-Emmett-Teller 表面积为 186.20 m2 g-1，QDs 掺杂的 COFs@MIP 的最大吸附容量为 771 mg g-1，表现出良好的选择性和吸附能力。在 5–100 μg L-1 (R2 = 0.9959) 范围内建立直接荧光测定，检测限为 1.60 μg L-1。此外，加标自来水的回收率达到了 86.5-106.5%。该测定系统可用于追踪NRT相关杀虫剂，准确度高，重复性和再现性好。图形概要 。.