广谱
费斯特共振能量转移
超分子化学
寄主(生物学)
化学
纳米技术
生物
材料科学
分子
组合化学
荧光
生态学
有机化学
物理
光学
作者
Tianhao Jia,Hong Tang,Tianyi Qin,Yirui Zhang,Ye Huang,Zhiqing Xun,Bin Liu,Zhixiang Zhang,Hanhong Xu,Chen Zhao
标识
DOI:10.1021/acs.jafc.3c05231
摘要
The massive use of pyrethroid pesticides in agriculture has brought growing concerns about food safety due to their several harmful effects on human health, especially through the accumulation of the food chain. To date, most of the available analytical methods for pyrethroids still suffer from insufficient detection universality, complicated sample pretreatment, and detection processes, which severely limit their practical applications. Herein, a novel Förster resonance energy transfer (FRET)-assisted host–guest supramolecular nanoassembly is reported, for the first time, successfully realizing ratiometric fluorescent detection of pyrethroids in real samples through the indicator displacement assay (IDA) mechanism. This method is capable of detecting a broad spectrum of pyrethroids, including bifenthrin, cyfluthrin, cypermethrin, deltamethrin, etofenprox, fenvalerate, and permethrin, with ultrahigh detection sensitivity, great selectivity, high anti-interference ability, and, in particular, distinct emission color response from red to green. Such a large chromatic response makes this method available for fast and on-site detection of pyrethroids in real samples with the aid of several simple portable analytical apparatuses.
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