残留物(化学)
硫醇
荧光
马来酰亚胺
化学
四苯乙烯
材料科学
色谱法
聚集诱导发射
有机化学
量子力学
物理
作者
Zhe Jiao,Zongning Guo,Xuelin Huang,Jinling Yang,Jianxiang Huang,Yong Liu,Guozhen Liu,Pengfei Zhang,Chao Song,Ben Zhong Tang
出处
期刊:ACS Sensors
[American Chemical Society]
日期:2021-08-18
卷期号:6 (8): 2845-2850
被引量:23
标识
DOI:10.1021/acssensors.1c01178
摘要
Development of an easy-to-use, low-cost, household device can help the consumer quickly identify an organophosphorus (OP) residue concentration level. In this work, we demonstrate a 3D-printed, portable, fluorescent-sensing platform for smartphone-capable detection of OPs in vegetables. For development of the proposed device, we utilize the smartphone for capturing the strong thiol-activated fluorescence, which was produced by hydrolysis of OPs in the presence of alkali. The thiol-responsive AIEgen (maleimide-functionalized tetraphenylethylene) was non-emissive in both solution and the solid state but could be readily lighted up by the click addition of thiol to its MI pendant. An android application “Detection” has been developed on the basis of the gray value to analyze the different concentration levels of OPs in vegetable samples. The gray value was linearly related with the concentration of five kinds of organophosphorus residue, ranging from 0 to 20 μg/mL. It was also applied for determination of OPs residue in the leaves of cowpea, celery, and Chinese cabbage. Different from acetylcholinesterase enzyme-based sensors for poor stability under high temperature, the proposed method was a direct detection method for OPs and can be used for rapid monitoring of OPs residue concentration levels before LC-MS analysis.
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