Using a Dynamic Hydrophilization Strategy to Achieve Nanodispersion, Full Wetting, and Precise Delivery of Hydrophobic Pesticide
文献类型： 外文期刊
作者： Zhao, Kefei 1 ; Xu, Guangchun 1 ; Wang, Leng 1 ; Wu, Tianyue 1 ; Zhang, Xingyu 1 ; Zhang, Chenhui 1 ; Zhao, Yuhang 1 ; Li, Zilu 1 ; Gao, Yuxia 1 ; Du, Fengpei 1 ;
作者机构： 1.China Agr Univ, Coll Sci, Dept Appl Chem, Beijing 100193, Peoples R China
2.Jiangsu Acad Agr Sci, Inst Plant Protect, Nanjing 210014, Peoples R China
关键词： hydrophobic pesticide; dynamic covalent bond; nanodispersion; foliar full wetting; precise delivery
期刊名称：ACS APPLIED MATERIALS & INTERFACES （ 影响因子：9.5； 五年影响因子：9.6 ）
ISSN： 1944-8244
年卷期： 2023 年 15 卷 30 期
页码：
收录情况： SCI
摘要： Various strategies have been developed to improve theapplicabilityof hydrophobic pesticides for better effectiveness in agriculture.However, existing formulations of hydrophobic pesticides still sufferfrom complicated processing, abused organic solvents, indispensablesurfactants, or inescapable ecotoxicity, which strictly limit theirapplications. Herein, a dynamic covalent bond tailored pesticide (fipronil)amphiphile is constructed to address the above issues, which accomplishesthe nanodispersion, full wetting, and precise delivery without organicsolvents, surfactants, and materials simultaneously. By introducinga hydrophilic ligand on the hydrophobic fipronil through an iminebond, the cleavable fipronil amphiphile (FPP) exhibits superior watersolubility and can even self-assemble into micelles at higher concentrations,which can be directly applied in powder form without organic solvents.Attributed to the suitable hydrophilic/hydrophobic ratio, FPP achievesfull wetting and effective deposition on superhydrophobic rice leaveswithout surfactants. Moreover, benefiting from the unique dynamicnature of the imine bond, FPP maintains good storage stability whilesensitively releasing back to fipronil under the humidity and pH trigger,consequently implementing the precise delivery for nontarget Apis cerana and target Chilo suppressalis without materials. To our knowledge, this dynamic covalent bondtailored amphiphile strategy is the first idea that simultaneouslytakes the dispersibility, wettability, and responsiveness of hydrophobicpesticides into account, providing a possibility to control the entirejourney of field application and even promising to be incorporatedinto the synthesis process, thus paving the way for modern sustainableagriculture.
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