Novel herbicide ionic liquids based on nicosulfuron with increased efficacy†,New Journal of Chemistry

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Novel herbicide ionic liquids based on nicosulfuron with increased efficacy†
New Journal of Chemistry ( IF 2.7 ) Pub Date : 2018-11-27 00:00:00 , DOI: 10.1039/c8nj05903a
Weichen Wang _{1,

2,

3} , Juanli Zhu _{1,

2,

3} , Gang Tang _{1,

2,

3} , Hong Huo _{1,

2,

3} , Wenbing Zhang _{1,

2,

3} , You Liang _{1,

2,

3} , Hongqiang Dong _{1,

2,

3} , Jiale Yang _{1,

2,

3} , Yongsong Cao _{1,

2,

3}

Affiliation

Nicosulfuron is widely used in agriculture because of its high selectivity, wide weeding spectrum, and excellent herbicide performance. However, it is necessary to add adjuvants to stabilize nicosulfuron so as to maximize its weed-control efficacy. In this study, five novel herbicidal ionic liquids (HIL1-5) based on nicosulfuron were synthesized through an acid–base reaction by pairing with tetrabutylammonium, benzyltriethylammonium, 2-hydroxyethyltrimethylammonium, hexadecyltrimethylammonium, and hexadecypyridinium, representing different types of cations with short-chain branched hydrocarbon, long-chain branched hydrocarbon, fused heterocycle, and aromatic hydrocarbon, respectively. The results showed that HILs had a low solubility and surface tension, and moderate octanol–water partition coefficient, which could reduce the risk of leaching and polluting the water environment to some extent. Nicosulfuron-based herbicidal ionic liquids were more stable than the nicosulfuron under high temperature and ultraviolet radiation, and the stability of the herbicidal ionic liquids followed the order of HIL5 > HIL1 > HIL3 > HIL2 > HIL4. HIL5 without any adjuvants exhibited a better control efficacy against gramineous and broadleaf weeds than nicosulfuron. The results showed that the physicochemical property of herbicide could be optimized by selecting suitable paired ions to solve the problems existing in practical application of the herbicide and could reduce its negative impact on the environment.

中文翻译：

基于烟嘧磺隆的新型除草剂离子液体，具有更高的功效†

烟嘧磺隆具有高选择性，宽除草谱和优异的除草剂性能，因此被广泛用于农业。但是，有必要添加佐剂以稳定烟嘧磺隆，以使其除草效力最大化。在这项研究中，通过酸碱反应，通过与四丁基铵，苄基三乙基铵，2-羟乙基三甲基铵，十六烷基三甲基铵和十六烷基吡啶配对，通过酸碱反应合成了五种基于烟嘧磺隆的新型除草离子液体（HIL1-5）。支链烃，长链支链烃，稠合杂环和芳烃。结果表明，HILs的溶解度和表面张力低，辛醇-水分配系数适中，这可以在一定程度上降低浸出和污染水环境的风险。烟嘧磺隆类除草离子液体在高温和紫外辐射下比烟嘧磺隆更稳定，除草离子液体的稳定性依次为HIL5> HIL1> HIL3> HIL2> HIL4。与烟嘧磺隆相比，不含任何佐剂的HIL5对禾本科和阔叶杂草表现出更好的防治效果。结果表明，通过选择合适的成对离子可以优化除草剂的理化性质，解决除草剂在实际应用中存在的问题，并减少其对环境的不利影响。烟嘧磺隆类除草离子液体在高温和紫外辐射下比烟嘧磺隆更稳定，除草离子液体的稳定性依次为HIL5> HIL1> HIL3> HIL2> HIL4。与烟嘧磺隆相比，不含任何佐剂的HIL5对禾本科和阔叶杂草表现出更好的防治效果。结果表明，通过选择合适的成对离子可以优化除草剂的理化性质，解决除草剂在实际应用中存在的问题，并减少其对环境的不利影响。烟嘧磺隆类除草离子液体在高温和紫外辐射下比烟嘧磺隆更稳定，除草离子液体的稳定性依次为HIL5> HIL1> HIL3> HIL2> HIL4。与烟嘧磺隆相比，不含任何佐剂的HIL5对禾本科和阔叶杂草的防治效果更好。结果表明，通过选择合适的成对离子可以优化除草剂的理化性质，解决除草剂在实际应用中存在的问题，并减少其对环境的不利影响。与烟嘧磺隆相比，不含任何佐剂的HIL5对禾本科和阔叶杂草表现出更好的防治效果。结果表明，通过选择合适的成对离子可以优化除草剂的理化性质，解决除草剂在实际应用中存在的问题，并减少其对环境的不利影响。与烟嘧磺隆相比，不含任何佐剂的HIL5对禾本科和阔叶杂草的防治效果更好。结果表明，通过选择合适的成对离子可以优化除草剂的理化性质，解决除草剂在实际应用中存在的问题，并减少其对环境的不利影响。

更新日期：2018-11-27

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