Acta Phys. -Chim. Sin. ›› 2007, Vol. 23 ›› Issue (10): 1589-1593.doi: 10.3866/PKU.WHXB20071018

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Electrochemiluminescent Behavior of 10,10'-dimethyl-3,3'-disulfo-9,9'-biacridine

HUANG Feng-Hua; ZHUANG Hui-Sheng; CHEN Guo-Nan   

  1. Ministry of Education Key Laboratory of Analysis and Detection Technology for Food Safety, Fuzhou University, Fuzhou 350002, P. R. China; College of Chemistry and Material Science, Fujian Normal University, Fuzhou 350007, P. R. China; College of Environment Science and Engineering, Donghua University, Shanghai 200051, P. R. China
  • Received:2007-03-14 Revised:2007-06-20 Published:2007-10-01
  • Contact: CHEN Guo-Nan


The electrochemiluminescence (ECL) behaviour of a new reagent 10,10'-dimethyl-3,3'-disulfo-9,9'-biacridine (DMDSBA) was studied. The effects of the electrochemical parameters, the reaction medium and pH on the ECL were investigated in detail. It was found that the new reagent DMDSBA gave a strong electrochemiluminescence in KNO3 solution when an appropriate voltage was applied on glassy carbon electrode. Under the optimum conditions, the natural logarithm of the ECL intensity of DMDSBA has a good linear relationship with the natural logarithm of the concentration of DMDSBA in the range of 1.0×10-5 -1.0×10-8 mol·L-1, the detection limit of DMDSBA was 2.3×10-9 mol·L -1. The cyclic voltammetry, fluorescence spetrum and ECL spetrum for this ECL system have also been investigated in detail, based on which a possible mechanismfor the ECL of DMDSBA was proposed.

Key words: DMDSBA; Electrochemiluminescence; Mechanism


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