物理化学学报 >> 2007, Vol. 23 >> Issue (10): 1589-1593.doi: 10.3866/PKU.WHXB20071018

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10,10’-二甲基-3,3’-二磺酸基-9,9’-双吖啶的电致化学发光行为

黄风华; 庄惠生; 陈国南   

  1. 福州大学食品安全分析与检测教育部重点实验室, 福州 350002; 福建师范大学化学与材料学院, 福州 350007; 东华大学环境科学与工程学院, 上海 200051
  • 收稿日期:2007-03-14 修回日期:2007-06-20 发布日期:2007-10-01
  • 通讯作者: 陈国南 E-mail:guonanchen@126.com

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 E-mail:guonanchen@126.com

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摘要：

研究了新试剂10,10'-二甲基-3,3'-二磺酸基-9,9'-双吖啶(简称DMDSBA)的电致化学发光(ECL)行为. 考察了电化学参数、反应介质以及pH等条件对DMDSBA电致化学发光信号的影响. 结果表明, 在玻碳电极上施加适当电压时, DMDSBA在KNO3溶液介质中产生很强的电化学发光信号, 于优化的实验条件下, 发光强度的自然对数与DMDSBA浓度的自然对数在1.0×10-5-1.0×10-8 mol·L-1范围内呈良好的线性关系,检出限可达2.3×10-9 mol·L-1. 并用循环伏安法、电致化学发光光谱以及荧光光谱, 研究了DMDSBA的电致化学发光机理.

关键词: 10 10-二甲基-3 3-二磺酸基-9 9-双吖啶; 电致化学发光; 机理

Abstract:

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