Excellent sustained-release efficacy of herbicide quinclorac with cationic covalent organic frameworks

文献类型： 外文期刊

第一作者： Deng, Xile

作者： Deng, Xile;Zhou, Xiaomao;Bai, Lianyang;Zhao, Pengyue

作者机构：

关键词： Covalent organic frameworks; Control release; Nanosheets; Quinclorac; Barnyard grass

期刊名称：CHEMICAL ENGINEERING JOURNAL （ 影响因子：13.273； 五年影响因子：11.529 ）

ISSN： 1385-8947

年卷期： 2021 年 405 卷

页码：

收录情况： SCI

摘要： Ethidium bromide-based covalent organic frameworks (EB-COFs) possess excellent stability and strong adsorption capacities due to their rich cationic charge in the porous structures, making them potential drug release carriers. In this research, EB-COFs nanosheets were prepared for loading and controlling the release of quinclorac (QNC) by mechanical delamination. The loading capacity of QNC into EB-COFs was determined as 41% (w/w). Compared to QNC technical concentrate (TC), the as-obtained stimuli-responsive nanosheets displayed prior controlled-release characteristics. Furthermore, QNC-loaded EB-COFs nanosheets displayed excellent herbicide activities against barnyard grass (Echinochloa crusgalli), when compared to QNC TC. In sum, herbicidal COFs nanosheets look potential as a novel efficient delivery system for pesticide formulations.

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