Chem. J. Chinese Universities ›› 2022, Vol. 43 ›› Issue (1): 20210582.doi: 10.7503/cjcu20210582

• Article • Previous Articles     Next Articles

Fabrication of Electrochemical Sensor for Dopamine and Uric Acid Based on a Novel Dimeric Phthalocyanine-involved Quintuple-decker Modified Indium Tin Oxide Electrode

WEI Chuangyu1, CHEN Yanli1(), JIANG Jianzhuang1,2()   

  1. 1.College of Science,School of Materials Science and Engineering,China University of Petroleum(East China),Qingdao 266580,China
    2.Beijing Key Laboratory for Science and Application of Functional Molecular and Crystalline Materials,Department of Chemistry,University of Science and Technology Beijing,Beijing 100083,China
  • Received:2021-08-16 Online:2022-01-10 Published:2021-09-13
  • Contact: CHEN Yanli,JIANG Jianzhuang E-mail:yanlichen@upc.edu.cn;jianzhuang@ustb.edu.cn
  • Supported by:
    the National Natural Science Foundation of China(21631003);the Post-graduate Innovation Project of China University of Petroleum(East China)(YCX2021152)

Abstract:

Combination between the extending π-conjugated system in the longitudinal and transverse directions of Pc macrocycles, sandwich-type ethylthio substituted phthalocyaninato europium complex [Pc(SC2H582Eu2· [BiPc(SC2H512]Eu2[Pc(SC2H582 was synthesized. The self-assembled film of the complex was prepared by means of the solution-based Quasi-Langmuir-Shäfer(QLS) method. The molecular arrangement of the complex in the film was characterized by various spectroscopic methods. It was found that the molecules of the complex in the film were arranged on the substrate surface in the J-aggregation mode and edge-on configuration. The film was revealed to be a good semiconductor with conductivity as high as 8.86×10-5 S/cm. ITO electrode modified by the QLS film of the complex was successfully applied in electrochemical detection, resulting in sensitive detection of dopamine(DA) and uric acid(UA) with the good sensitivities of 110 and 185.6 mA·μL·mol-1·cm-2 and low detection limits of 1.35 and 1.64 μmol/L for DA and UA, respectively.

Key words: Sandwich type rare earth phthalocyanine complex, Dopamine, Uric acid, Electrochemical sensor

CLC Number: 

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