Home    中文  
 
Just Accepted  |  Current Issue  |  Archive  |  Featured Articles  |  Most Read  |  Most Download  |  Most Cited

Chem. J. Chinese Universities ›› 2026, Vol. 47 ›› Issue (7): 20250380.doi: 10.7503/cjcu20250380

• Analytical Chemistry • Previous Articles     Next Articles

Synthesis and Application of Fluorescent Probe for Detection of Glyphosate Based on Zinc Ion

XIONG Xin(), LIU Funan, PIAN Tongyan, FAN Wenzhe, ZHANG Ziyi, LI Mingjian, LIU Jiayu, CAO Xiaoqin, SHU Penghua()   

  1. College of Food and Pharmacy,Xuchang University,Xuchang 461000,China
  • Received:2025-12-15 Online:2026-07-10 Published:2026-04-01
  • Contact: XIONG Xin, SHU Penghua E-mail:xiongxion2022@yeah.net;shupenghua@yeah.net
  • Supported by:
    the Henan Natural Science Foundation of Youth Science Fund Project, China(252300420811);the Key Scientific Research Program in Universities of Henan Province, China(25B550017);the College Students’ Innovative Entrepreneurial Training Plan Program of Henan Province, China(S202510480027)

Abstract:

A novel benzothiazole-based fluorescent probe(DHB) was designed and synthesized, and its structure was characterized using means of nuclear magnetic resonance(NMR), Fourier transform infrared spectroscopy(FTIR), mass spectrometry(MS) and high-resolution mass spectrometry(HRMS). The research results indicate that probe DHB forms a 1∶1 complex with Zn2+, exhibiting strong fluorescence emission and achieving specific recognition of Zn2+ without interference from other coexisting metal ions and anions. The detection limit was 4.01×10-8 mol/L. When glyphosate was further added to the complex DHB-Zn2+, the system exhibited a significant fluorescence quenching effect with a response time of 18 s, and was not affected by other organophosphorus pesticides and common anions. The detection limit was as low as 3.81×10-8 mol/L. Meanwhile, the reaction mechanism of probe DHB continuously recognizing Zn2+ and glyphosate was revealed by FTIR and HRMS. That is, the C=O in the structure of probe DHB underwent enol tautomerism, and the enol hydroxyl formed thereby, along with the O—H and the nitrogen heteroatom of C=N in the probe structure, jointly participated in the coordination with Zn2+. The synergistic coordination of amino, carboxyl and phosphate groups in the glyphosate molecule enabled it to form a stronger complex with Zn2+, resulting in the displacement of Zn2+ from the complex DHB-Zn2+. Furthermore, probe DHB and the complex DHB-Zn2+ can be applied to the analysis and detection of Zn2+ and glyphosate in the environment, which has a certain practical value.

Key words: Benzothiazole, Fluorescent probe, Glyphosate, Zn2+

CLC Number: 

TrendMD: