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- Title
Coumarin‐Based Light‐Responsive Composite Nanochannel Membranes for Precise Controlled Release of Pesticides.
- Authors
Gong, Jue‐Ying; Zhou, Xing‐Long; Faraj, Yousef; Zou, Lin‐Bing; Zhou, Chang‐Hai; Xie, Rui; Wang, Wei; Liu, Zhuang; Pan, Da‐Wei; Ju, Xiao‐Jie; Chu, Liang‐Yin
- Abstract
The precise, controllable, and safe application of pesticides can effectively reduce pesticide consumption and minimize chemical pollution at the source. Here, a light‐responsive controlled‐release system with flexible control, precise release, easy recovery, and suitability for future pesticide application in aquatic environments is proposed. The system precisely controls the release of pesticides through a light‐responsive composite nanochannel membrane (CTC@SNM/PET) with reactive coumarin derivatives (CTC) as gating molecules. The prepared nanochannel membrane has an ultrathin thickness of 67.5 nm and well‐ordered vertical nanochannels with a uniform size of 1.9 nm, providing a prerequisite for precise molecular gating and high permeability for mass transport. CTC monomers can realize cycloaddition/cyclocracking and nanochannel closing/opening to control the release of pesticides by controlling 365/254 nm ultraviolet light irradiation. As a proof of concept, the light‐responsive controlled‐release system based on CTC@MSF/PET against Saprolegnia parasitica achieves an inhibition rate of more than 95% and reduces pesticide residues by 56.5% compared to the control group. The proposed membrane system has great application potential to easily enable remote, quantitative, timed, and positioned pesticide application, thereby reducing pesticide residues and providing a prospective approach to reducing environmental and human risks.
- Subjects
PESTICIDE residues in food; POLLUTION; COUMARINS; PESTICIDE pollution; ULTRAVIOLET radiation; COUMARIN derivatives; PESTICIDES
- Publication
Advanced Functional Materials, 2024, Vol 34, Issue 21, p1
- ISSN
1616-301X
- Publication type
Article
- DOI
10.1002/adfm.202314642