Journal of Solid State Electrochemistry

, Volume 18, Issue 7, pp 1815–1822 | Cite as

Clopyralid detection by using a molecularly imprinted electrochemical luminescence sensor based on the “gate-controlled” effect

  • Xue Li
  • Jianping LiEmail author
  • Weiling Yin
  • Lianming Zhang
Original Paper


A new strategy for trace analysis was proposed by preparing a molecularly imprinted polymer (MIP) sensor. The template molecules of clopyralid were determined based on “gate-controlled” electrochemiluminescence (ECL) measurement. A dense polymer film was electropolymerized on an electrode surface to fabricate the MIP–ECL sensor. The process of template elution and rebinding acted as a gate to control the flux of probes, which pass through the cavities and react on the electrode surface. ECL measurement was conducted in the luminol–H2O2 system. A linear relationship between ECL intensity and clopyralid concentrations in the range of 1 × 10−9 mol/L to 8 × 10−7 mol/L exists, and the detection limit was 3.7 × 10−10 mol/L. The prepared sensor was used to detect clopyralid in vegetables. Recoveries of 97.9 % to 102.9 % were obtained. The sensor showed highly selective recognition, high sensitivity, good stability, and reproducibility for clopyralid detection.


Molecularly imprinted sensors Gate controlled Electrochemical luminescence Clopyralid 



The authors gratefully acknowledge the financial support of the National Natural Science Foundation of China (No. 21375031 and No. 21165007).


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Copyright information

© Springer-Verlag Berlin Heidelberg 2014

Authors and Affiliations

  • Xue Li
    • 1
  • Jianping Li
    • 1
    Email author
  • Weiling Yin
    • 1
  • Lianming Zhang
    • 1
  1. 1.College of Chemistry and Biological EngineeringGuilin University of TechnologyGuilinPeople’s Republic of China

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