Chinese Journal of Organic Chemistry ›› 2022, Vol. 42 ›› Issue (8): 2559-2567.DOI: 10.6023/cjoc202203009 Previous Articles     Next Articles

ARTICLES

一种基于喹啉酰腙的接力识别Cu2+和草甘膦的荧光探针及其应用

吴绵园a,b, 由君a,*(), 喻艳超a,*(), 武文菊a   

  1. a 哈尔滨理工大学材料科学与化学工程学院 绿色化工技术黑龙江省高校重点实验室 哈尔滨 150080
    b 黑龙江省科学院石油化学研究院 哈尔滨 150040
  • 收稿日期:2022-03-02 修回日期:2022-03-28 发布日期:2022-04-22
  • 通讯作者: 由君, 喻艳超
  • 基金资助:
    国家自然科学基金(21908034); 黑龙江省自然科学基金(LH2021H001)

A Novle Quinoline Hydrazone-Based Fluorescent Probe for Sequential Determination of Cu2+/Glyphosate and Its Applications

Mianyuan Wua,b, Jun Youa(), Yanchao Yua(), Wenju Wua   

  1. a 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
    b Institute of Petrochemistry, Heilongjiang Academy of Sciences, Harbin 150040
  • Received:2022-03-02 Revised:2022-03-28 Published:2022-04-22
  • Contact: Jun You, Yanchao Yu
  • Supported by:
    National Natural Science Foundation of China(21908034); Natural Science Foundation of Heilongjiang Province(LH2021H001)

A novel quinoline hydrazone-based fluorescent probe L was designed and synthesized using quinoline-2-carboxylic acid and 7-(diethylamino)coumarin-3-carbaldehyde as raw materials. The spectral properties of probe L were studied by UV-Vis/fluorescence spectrophotometry. The results showed that probe L had obvious ON-OFF fluorescence response to Cu2+ in the tetrahydrofuran (THF)/H2O [V:V=3:7, 2-[4-(2-hydroxyethyl)piperazin-1-yl]ethanesulfonic acid (HEPES) 10 mmol/ L, pH=7.4] solution, and it displayed efficiency, high specificity and sensitivity. Job’s plot and high resolution mass spectrometry showed that the stoichiometry of L-Cu2+ complex was estimated to be 1:1. Meanwhile, complex L-Cu2+ showed high selectivity and good anti-interference ability towards glyphosate through the significant fluorescence enhancement, and the detection limit of complex L-Cu2+ to glyphosate could reach 5.6×10–8 mol/L (9.5×10–3 mg/L). In addition, complex L- Cu2+ was able to sense glyphosate by “naked-eye” according to the color change, and applied to glyphosate detection in the actual water samples.

Key words: quinoline hydrazone, fluorescent probe, Cu2+, glyphosate, sequential recognition