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Analytical and Bioanalytical Chemistry

, Volume 385, Issue 4, pp 724–729 | Cite as

Application of a novel electrosynthesized polydopamine-imprinted film to the capacitive sensing of nicotine

  • Kai Liu
  • Wan-Zhi WeiEmail author
  • Jin-Xiang Zeng
  • Xiao-Ying Liu
  • Yan-Ping Gao
Original Paper

Abstract

The application of novel electrosynthesized polydopamine (PDA)-imprinted film as a recognition element for the capacitive sensing of nicotine is reported. The PDA-imprinted film was electropolymerized directly on the gold electrode surface in the presence of nicotine without an additional self-assembled thiol sublayer. The compact PDA film has various functional groups that aid the imprinting procedure. Furthermore, the film shows good capacitive response since it is insulating in nature and ultrathin. The sensor’s linear response range for nicotine was between 1–25 μmol L−1, with a detection limit of 0.5 μmol L−1. The proposed molecularly imprinted polymer capacitive (MIPC) sensor exhibited good selectivity for nicotine. The reproducibility and repeatability of the MIPC senor were all found to be satisfactory. The results from sample analysis confirmed the applicability of the MIPC sensor to quantitative analysis.

Keywords

Dopamine Molecularly imprinted polymer Electropolymerization Capacitive sensing Nicotine 

Notes

Acknowledgement

The authors gratefully acknowledge the financial support of the Doctorate Fund (No.20020532007).

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Copyright information

© Springer-Verlag 2006

Authors and Affiliations

  • Kai Liu
    • 1
  • Wan-Zhi Wei
    • 1
    Email author
  • Jin-Xiang Zeng
    • 1
  • Xiao-Ying Liu
    • 1
  • Yan-Ping Gao
    • 1
  1. 1.State Key Laboratory of Chemo/Biosensing and ChemometricsCollege of Chemistry and Chemical Engineering, Hunan UniversityChangshaPeople’s Republic of China

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