Chemical Research in Chinese Universities ›› 2024, Vol. 40 ›› Issue (6): 1227-1232.doi: 10.1007/s40242-024-4093-6

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An Electropolymerization (EP)-based Fluorescent Film Probe to Fe3+ Using Conjugated Polymer as Precursor

TAN Wenjia2, MIAO Xin1, LI Yan1, ZHANG Ming1   

  1. 1. State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, P. R. China;
    2. China-Japan Union Hospital of Jilin University, Changchun 130033, P. R. China
  • Received:2024-04-15 Online:2024-12-01 Published:2024-10-26
  • Contact: ZHANG Ming,zhming@jlu.edu.cn E-mail:zhming@jlu.edu.cn
  • Supported by:
    This work was supported by the Changchun Science and Technology Development Plan, China (No. 23GZZ19) and the National Natural Science Foundation of China (No. 21875083).

Abstract: A conjugated polymer P-M2 with carbazole units as impendent sidechains is used as the electropolymerization (EP) precursor to prepare EP film and realize the coupling reaction between conjugated polymers. Further, the EP film is used as the fluorescent film probe to Fe3+, whose limit of detection (LOD) is calculated to be 1.4×10-7 mol/L. Compared with that of the EP film prepared by small molecule precursor M2, the LOD is enhanced ten times. The results are due to both the long conjugation length of P-M2 and the inherent highly cross-linking network microstructures of P-M2 EP film. Hereby, this work realizes not only the reaction between conjugated polymers but also a new precursor for the EP method and a promising fluorescent film sensor candidate.

Key words: Conjugated polymer, Electropolymerization, Fluorescent film probe, Fe3+