期刊
ACS NANO
卷 16, 期 11, 页码 18421-18429出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsnano.2c06544
关键词
Hydrogel discs; Aggregation-induced emission; Zeolite-like imidazole framework; Biosensor; Pesticide degradation
类别
资金
- National Natural Science Foundation of China
- Natural Science Foundation of Jilin Province
- Interdisciplinary Innovation Cultivation Project of Jilin University
- [62171194]
- [31901777]
- [61831011]
- [20200201218JC]
- [20220402054GH]
- [JLUXKJC2020315]
Functionalized hydrogels have been used to fabricate a sensitive pesticide biosensor by embedding gold nanoclusters@ zeolite-like imidazole framework (AuNCs@ZIF) composites in double network hydrogels. The hydrogel discs enhance sensing sensitivity and stability, and can accurately quantify pesticide residues on crops through fluorescence imaging.
Benefiting from the stimuli-responsive property and powerful loading capacity, functionalized hydrogels are favorable for the fabrication of sensing devices. Herein, we design aggregation-induced emission (AIE)-active hydrogel discs by embedding gold nanoclusters@ zeolite-like imidazole framework (AuNCs@ZIF) composites in double network hydrogels to build a sensitive pesticide biosensor. The hydrogel discs integrate an AIE effect of AuNCs, a stimuli-responsive property of ZIF, and a porous network structure of the hydrogel, which enhances the sensing sensitivity via boosting the stable fluorescent signal and antifouling performance. In conjunction with a homemade device, the fluorescence images of hydrogel discs could be transduced into data information for accurate quantification of chlorpyrifos pesticide with a detection limit of 0.2 ng/mL. The dynamic degradation of chlorpyrifos in Chinese cabbage is demonstrated to confirm the practical application of hydrogel discs. Such AIE-active hydrogel discs could be a plant health sensor for the on-site quantification of pesticide residues on crops, holding great promise for precision agriculture.
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