The synthesis and characteristics are presented of novel double‐salt herbicidal ionic liquids (DSHILs) that contain 4‐chloro‐2‐methylphenoxyacetate and trans‐cinnamate anions. In the designed synthesis, an anion of natural origin and a herbicidal anion were combined with an amphiphilic bisammonium cation to obtain new DSHILs with high herbicidal activity while high biocompatibility is maintained. The NMR and HRMS spectral analysis confirmed that the target structures were formed. Furthermore, HPLC analyses indicated that, as assumed, both anions were present in equimolar amounts. Experiments regarding the herbicidal effectiveness confirmed that the synthesized DSHILs exhibited high biological activity. The solutions of DSHILs applied during greenhouse studies were characterized by a low contact angle (approx. 55–67°) and surface tension (approx. 32–35 mN m⁻¹), which facilitated the contact of the active substance with the plant surface and penetration of the herbicide into the plant tissues.

中文翻译：

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包含4-氯-2-甲基苯氧基乙酸根和反肉桂酸根阴离子的双盐除草离子液体的合成和表征。

介绍了包含4-氯-2-甲基苯氧基乙酸和反式的新型双盐除草离子液体（DSHIL）的合成和特性肉桂酸酯阴离子。在设计的合成中，将天然阴离子和除草阴离子与两亲性双铵阳离子结合，获得了具有高除草活性的新DSHIL，同时保持了高生物相容性。NMR和HRMS光谱分析证实形成了目标结构。此外，HPLC分析表明，如所假设的，两种阴离子均以等摩尔量存在。关于除草效果的实验证实了合成的DSHIL具有较高的生物活性。在温室研究中使用的DSHIL溶液的特点是低接触角（约55-67°）和表面张力（约32-35 mN m ^-1），这有助于活性物质与植物表面的接触以及除草剂向植物组织中的渗透。