The Study For The ECL Behavior Of Luminol On The Surface Of ITO Glass

The ECL behavior of luminol on the surface of ITO glass in alkaline medium has been studied. The experimental results had indicated that the ITO was an excellent electrode material for ECL of luminol with very high sensitivity. The detecting limit of the luminol is as low as 10~15 mol/L order of magnitude. Comparison with the voltammetric behavior of luminol, it was revealed that both two oxidation processes of luminol led to the emission of ECL on the surface of ITO glass, which was different with the ECL behavior of luminol on platinium electrode The influences from the electric parameters and the dissolved oxygen to luminol's ECL on ITO glass, and the mechanism were also studied in this paper.The ITO glass was also applied as the electrode to study the electrochemical polymerization and electrochemiluminescent behavior of luminol on its surface. The experimental results had indicated that the luminol could be polymerized on the surface of ITO glass in acidic solution. The cyclic voltammetry and UV-Vis spectrometry were applied to confirm the polymerization of luminol. The polymerized luminol on ITO electrode kept the ECL property and some important effecting factors had been investigated.