Gong, Jue‐YingZhou, Xing‐LongFaraj, YousefZou, Lin‐BingZhou, Chang‐HaiXie, RuiWang, WeiLiu, ZhuangPan, Da‐WeiJu, Xiao‐JieChu, Liang‐Yin2024-02-072024-02-072024-01-28Gong, J‐Y., Zhou, X‐L., Faraj, Y., Zou, L‐B., Zhou, C‐H., Xie, R., Wang, W., Liu, Z., Pan, D‐W., Ju, X‐J., & Chu, L‐Y. (2024). Coumarin‐Based Light‐Responsive Composite Nanochannel Membranes for Precise Controlled Release of Pesticides. Advanced Functional Materials, 34(21), article-number 2314642. https://doi.org/10.1002/adfm.2023146421616-301X10.1002/adfm.202314642http://hdl.handle.net/10034/628475This is the peer reviewed version of the following article: [Gong, J‐Y., Zhou, X‐L., Faraj, Y., Zou, L‐B., Zhou, C‐H., Xie, R., Wang, W., Liu, Z., Pan, D‐W., Ju, X‐J., & Chu, L‐Y. (2024). Coumarin‐Based Light‐Responsive Composite Nanochannel Membranes for Precise Controlled Release of Pesticides. Advanced Functional Materials, 34(21), article-number 2314642], which has been published in final form at [https://doi.org/10.1002/adfm.202314642]. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. This article may not be enhanced, enriched or otherwise transformed into a derivative work, without express permission from Wiley or by statutory rights under applicable legislation. Copyright notices must not be removed, obscured or modified. The article must be linked to Wiley’s version of record on Wiley Online Library and any embedding, framing or otherwise making available the article or pages thereof by third parties from platforms, services and websites other than Wiley Online Library must be prohibited.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.Licence for VoR version of this article starting on 2024-01-28: http://onlinelibrary.wiley.com/termsAndConditions#vorhttps://creativecommons.org/licenses/by-nc-nd/4.0/ElectrochemistryCondensed Matter PhysicsBiomaterialsElectronic, Optical and Magnetic MaterialsArticle1616-3028Advanced Functional Materials2024-02-27