摘要
研究了10，10′-二甲基-3,3′二氨基-9,9′-双吖啶（简称DMDABA）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值等条件对DMDABA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，该新试剂DMDABA在KNO3乙醇溶液中产生很强的电致化学发光信号，于最优化条件下，发光强度的自然对数与DMDABA浓度的自然对数在2．16×10^-5～2．16×10^-8mol／L范围内呈良好的线性关系，检出限可达5．2×10-9mol／L．还用循环伏安法、电致化学发光光谱以及荧光光谱研究了DMDABA的电致化学发光机理．
The dlectrochemiluminescence （ECL） behaviour of a new reagent 10,10′-二甲基-3,3′-diamido-二氨基-9,9′- biacridine acridine （DMDABA） was studied. The effects of the electrochemical parameters, reaction medium and pH on the ECL were investigated. It was found that new reagent DMDABA gave a strong electrochemiluminescence in the KNO3-C2H5OH water solution when an appropriate voltage was applied on glassy carbon electrode. Under the optimum conditions, the natural logarithm of the ECL intensity of DMDABA has a good linear relationship with the natural logarithm of the concentration of DMDABA in the range of 2.16 × 10^∽5 2.16 ×10^-5mol/L, the detection limit of DMDABA was 5.2 × 10^-9 mol/L. The cyclic voltammetry, fluorescence spetrtrum and ECL spetrtrum for this ECL system have also been investigated in detail, and the possible mechanism for the ECL of DMIDABA was proposed.
出处
《分子科学学报》
CAS
CSCD
2008年第1期6-10,共5页
Journal of Molecular Science
基金
国家自然科学基金资助项目(20735002,20575011)
关键词
10
10′-二甲基-3
3′二氨基-9
9′-双吖啶
电致化学发光
机理
electrochemiluminescence
mechanism 10，10′-二甲基-3,3′二氨基-9,9′-biacridine10，10′-二甲基-3,3′二氨基-9,9′-biacridine10，10′-二甲基-3,3′二氨基-9,9′-biacridine electrochemiluminescence
mechanism electrochemiluminescence
mechanism electrochemiluminescence
mechanism
