Chem. J. Chinese Universities ›› 2020, Vol. 41 ›› Issue (9): 1989.doi: 10.7503/cjcu20200294

• Analytical Chemistry • Previous Articles     Next Articles

Construction of High Efficiency Uric Acid Sensor Based on the co-Crystal Enhanced Electrochemiluminescence from 9,10-Diphenylanthracene-perylene Microcrystals

LIAO Ni, ZHANG Jieyuan, HUANG Ziyang, ZHAO Yanxi, CHAI Yaqin, YUAN Ruo, ZHUO Ying()   

  1. Key Laboratory of Luminescence Analysis and Molecular Sensing(Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, China
  • Received:2020-05-26 Online:2020-09-10 Published:2020-09-02
  • Contact: ZHUO Ying E-mail:yingzhuo@swu.edu.cn
  • Supported by:
    Supported by the National Natural Science Foundation of China(21675130);the Chongqing Talents Touth Top?notch Personnel Support Program, China(CQYC201905067)

Abstract:

A new luminophore with co-crystal enhanced electrochemiluminescence(ECL) was obtained by the surfactant assisted self-assembly of the non-coplanar molecule 9,10-diphenylanthracene(DPA) and planar molecule perylene(Pe). The introduction of DPA in the co-crystals can not only reduce the aggregation-caused quenching(ACQ) effect of perylene, making the ECL emission of Pe molecule from the dimer or multimer excited state(1Pe2*) to the monomer excited state(1Pe*), but also plays a role as a donor molecule, providing effective energy transfer to the acceptor molecule of Pe, which further enhances the ECL response. The electrochemical sensor for uric acid based on DPA-Pe microcrystals has an extremely wide linear of 0.01 μmol/L—5.0 mmol/L and a detection limit of 4.0 nmol/L. In addition, the sensor has a nice stability and selectivity for uric acid detection.

Key words: co-Crystal enhanced electrochemiluminescence, 9,10-Diphenylanthracene, Perylene, Uric acid, Sensor

CLC Number: 

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