期刊
JOURNAL OF HAZARDOUS MATERIALS
卷 413, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.jhazmat.2021.125306
关键词
Aggregation-induced emission luminogen; Organophosphorus pesticide; Paper analytical device; Equipment-free and visual; MnO2
资金
- National Natural Science Foundation of China [NSFC: 51973239, 51733010, 21672267]
- Science and Technology Planning Project of Guangdong Province [2015B090913003]
- Fundamental Research Funds for the Central Universities
A high-performance fluorescence paper analytical device (PAD) was developed for equipment-free and visual sensing of organophosphorus pesticide residues, providing a new avenue to bring OPs analysis out of the lab and into the world.
Organophosphorus pesticide (OP) residues have gathered considerable attention because of their significant threat to society development and healthy life. Developing a sensitive and practical OPs sensor is highly urgent, whereas remains a huge challenge. To this end, we fabricated a high-performance fluorescence paper analytical device (PAD) for apparatus-free and visual sensing of OPs based on aggregation-induced emission (AIE) luminogen's bright emission in aggregated state, unique response of MnO2 to thiol compounds, and difference of MnO2 and Mn2+ in quenching fluorescence. AIE nanoparticles PTDNPs-0.10 and MnO2 respectively acted as core and shell to prepare PTDNPs@MnO2, which possessed high stability and were dripped on cellulose paper's surface to fabricate AIE-PAD. The sensing mechanism is that OPs-treated acetylcholinesterase (AChE) prevents the formation of thiocholine, thereby minimizing the reduction of MnO2 into Mn2+ and changing the output signal. As a result, equipment-free and visual sensing of OPs was acquired with limit of detection of 1.60 ng/mL. This work justifies the feasibility of applying core-shell material to develop high-performance sensor and substituting complex/expensive solution-phase sensor with PAD, providing a new avenue to bring OPs analysis out of the lab and into the world.
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