Fabrication of ionic liquid self-assemblies based on dicamba with improved herbicidal activity and reduced environmental risks

IF 5.6 2区医学 Q1 BIOPHYSICS

Colloids and Surfaces B: Biointerfaces Pub Date : 2024-07-11 DOI:10.1016/j.colsurfb.2024.114077

Yulu Liu , Dandan Kong , Gang Tang , Zhiyuan Zhou , Yuqi Huang , Xiaohong Zhang , Guangyao Yan , Jialu Wang , Gaohua Hu , Weiyao Yan , Jianhua Xiao , Yongsong Cao

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引用次数: 0

Abstract

The off-target loss of pesticide formulations caused by volatilization and leaching has reduced effective utilization and increased risks to the ecological environment and human health. Self-assembly of pesticides has been widely concerned due to the improved bioactivity and environmental compatibility. Herbicidal ionic liquids (HILs) could effectively decrease off-target loss and increase efficacy and environmental safety by improving the physicochemical properties of herbicides. Herein, HILs were prepared by pairing dicamba with quaternary ammonium salts containing different alkyl chain lengths and aromatic groups and subsequently self-assembled into spherical nanoparticles (HIL NPs) via electrostatic interaction and hydrophobic effect. Compared with dicamba, the obtained HIL NPs with an average particle size of 6–55 nm exhibited improved physicochemical properties, including high zeta potential values (+20.3 to +27.8 mV), low volatilization rate (2.4–3.9 %) and surface tension (22.83–33.07 mN m⁻¹), decreased contact angle (32.25–41.55°) and leaching potential (76.2–86.5 %), and high soil adsorption (12.1–23.8 %), suggesting low risks to the environment. The control efficacy against Amaranthus retroflexus of HIL3 NPs pairing dicamba with octadecyl-trimethyl ammonium chloride was better than that of dicamba sodium salt at different concentrations. Therefore, the ionic liquid self-assembly developed by a facile and green preparation approach to reduce the volatility and leaching of pesticides would have enormous potential in sustainable agriculture.

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制造基于麦草畏的离子液体自组装体，提高除草活性并降低环境风险

农药制剂因挥发和浸出造成的脱靶损失降低了有效利用率，增加了对生态环境和人类健康的风险。农药的自组装因其更好的生物活性和环境兼容性而受到广泛关注。除草离子液体（HILs）可通过改善除草剂的理化性质，有效减少脱靶损失，提高药效和环境安全性。本文将麦草畏与含有不同烷基链长和芳香基团的季铵盐配对制备成HILs，然后通过静电作用和疏水作用自组装成球形纳米颗粒（HIL NPs）。与麦草畏相比，所获得的平均粒径为 6-55 nm 的 HIL NPs 具有更好的理化性质，包括高 zeta 电位值（+20.3 至 +27.8 mV）、低挥发率（2.4-3.9 %）和表面张力（22.83-33.07 mN m-1），接触角（32.25-41.55°）和浸出电位（76.2-86.5 %）降低，土壤吸附率高（12.1-23.8 %），表明对环境的风险较低。在不同浓度下，麦草畏与十八烷基三甲基氯化铵配对的HIL3 NPs对苋菜的防效优于麦草畏钠盐。因此，通过简便、绿色的制备方法开发的离子液体自组装技术可降低农药的挥发性和浸出性，在可持续农业领域具有巨大的潜力。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Colloids and Surfaces B: Biointerfaces 生物-材料科学：生物材料

CiteScore

11.10

自引率

3.40%

发文量

730

审稿时长

42 days

期刊介绍： Colloids and Surfaces B: Biointerfaces is an international journal devoted to fundamental and applied research on colloid and interfacial phenomena in relation to systems of biological origin, having particular relevance to the medical, pharmaceutical, biotechnological, food and cosmetic fields. Submissions that: (1) deal solely with biological phenomena and do not describe the physico-chemical or colloid-chemical background and/or mechanism of the phenomena, and (2) deal solely with colloid/interfacial phenomena and do not have appropriate biological content or relevance, are outside the scope of the journal and will not be considered for publication. The journal publishes regular research papers, reviews, short communications and invited perspective articles, called BioInterface Perspectives. The BioInterface Perspective provide researchers the opportunity to review their own work, as well as provide insight into the work of others that inspired and influenced the author. Regular articles should have a maximum total length of 6,000 words. In addition, a (combined) maximum of 8 normal-sized figures and/or tables is allowed (so for instance 3 tables and 5 figures). For multiple-panel figures each set of two panels equates to one figure. Short communications should not exceed half of the above. It is required to give on the article cover page a short statistical summary of the article listing the total number of words and tables/figures.