高等学校化学学报 ›› 2022, Vol. 43 ›› Issue (1): 20210582.doi: 10.7503/cjcu20210582

• 研究论文 • 上一篇    下一篇

基于乙硫基取代的三层酞菁铕二聚体修饰ITO电极构筑电化学多巴胺和尿酸传感器

魏闯宇1, 陈艳丽1(), 姜建壮1,2()   

  1. 1.中国石油大学(华东)理学院, 材料科学与工程学院, 青岛 266580
    2.北京科技大学化学系, 功能分子与晶态材料科学与应用北京市重点实验室, 北京 100083
  • 收稿日期:2021-08-16 出版日期:2022-01-10 发布日期:2021-09-13
  • 通讯作者: 陈艳丽,姜建壮 E-mail:yanlichen@upc.edu.cn;jianzhuang@ustb.edu.cn
  • 基金资助:
    国家自然科学基金(21631003);中国石油大学(华东)研究生创新工程项目(YCX2021152)

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)

摘要:

通过在水平和垂直两个方向上来扩展酞菁配合物的共轭结构, 合成了三明治三层酞菁铕二聚体配合物[Pc(SC2H5)8]2Eu2[BiPc(SC2H5)12]Eu2[Pc(SC2H5)8]2, 使用Quasi-Langmuir-Shäfer(QLS)方法将配合物薄膜修饰在氧化铟锡导电玻璃(ITO)电极表面, 利用多种谱学手段对配合物分子在薄膜内的排列进行表征, 发现分子采取J聚集模式Edge-on排列在ITO电极表面, 该薄膜具有良好的半导体性质, 导电率高达8.86×10-5 S/cm. 将配合物薄膜修饰的ITO电极成功应用于多巴胺(DA)和尿酸(UA)的电化学灵敏检测, 最低检测限分别达到1.35和1.64 μmol/L, 灵敏度分别达到110和186.5 mA·μL·mol-1 ·cm-2.

关键词: 三明治型酞菁稀土配合物, 多巴胺, 尿酸, 电化学传感器

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

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