用于顺序识别锌离子和草甘膦的双功能荧光探针的合成与应用
Synthesis and application of a dual-functional fluorescent probe for sequential recognition of Znand glyphosate.
作者信息
Liu Qiye, Yu Yanchao, Wu Mianyuan, Yan Xuexue, Wu Wenju, You Jun
机构信息
Key Laboratory of Green Chemical Engineering and Technology of College of Heilongjiang Province, College of Materials Science and Chemical Engineering, Harbin University of Science and Technology, Harbin 150080, Heilongjiang, China.
Institute of Petrochemistry Heilongjiang Academy of Sciences, Harbin 150040, Heilongjiang, China.
出版信息
Spectrochim Acta A Mol Biomol Spectrosc. 2023 Dec 15;303:123221. doi: 10.1016/j.saa.2023.123221. Epub 2023 Jul 30.
A novel fluorescent probe QL was designed and synthesized based on Schiff base by 2-hydrazinobenzothiazole to sequentially recognize Zn and glyphosate. The probe QL was capable to detect Zn in DMSO solution via fluorescence enhancement, and exhibited good selectivity and anti-interference ability. The combination mode was 1:2 between probe QL and Zn according to the method of job's plot, and the detection limit of probe QL for Zn was found to be 4.51 × 10 M, which exhibited excellent sensitivity. Furthermore, the system QL-Zn could detect glyphosate by causing fluorescence quenching response and with a color change from yellow to colorless for naked-eye detection. The detection limit for glyphosate was found to be 4.93 × 10 M, which was far below the Standards for Drinking Water Quality (GB5749-2006) acceptable limits (0.7 μg/mL for glyphosate). Notably, the probe QL and its complex QL-Zn have been successfully applied to detect Zn and glyphosate in water, respectively.
基于席夫碱，由2-肼基苯并噻唑设计合成了一种新型荧光探针QL，用于顺序识别锌和草甘膦。探针QL能够通过荧光增强在二甲基亚砜溶液中检测锌，具有良好的选择性和抗干扰能力。根据Job氏曲线法，探针QL与锌的结合模式为1:2，探针QL对锌的检测限为4.51×10⁻⁸ M，具有优异的灵敏度。此外，QL-Zn体系能通过引起荧光猝灭响应来检测草甘膦，且伴有颜色变化，从黄色变为无色，可用于肉眼检测。草甘膦的检测限为4.93×10⁻⁸ M，远低于《生活饮用水卫生标准》（GB5749-2006）的可接受限值（草甘膦为0.7 μg/mL）。值得注意的是，探针QL及其配合物QL-Zn已分别成功应用于水中锌和草甘膦的检测。
Zotero 插件