Study on electrochemiluminescent intensification between luminol, CdTe quantum dots and oxygen by resonance energy transfer

We hereby report the electrochemiluminescent resonance energy transfer (ECRET) between luminol, CdTe quantum dots (QDs) and oxygen. The process take placed between luminol and CdTe QDs could be further enhanced by oxygen. The mechanism and the rule of oxygen have been discussed. It could be attributed to the adsorption and catalysis of QDs for luminol and the formation of singlet oxygen. Thus, it provided an excellent basis for selective and sensitive detection methodology for trace oxygen with a detection limit of 5 μg/L, as well as for the formation of singlet oxygen. Furthermore, the research extended the practicability of luminol ECL in lower pH range to 8.0.

► Electrochemiluminescent resonance energy transfer. ► Enhanced by singlet oxygen. ► Catalyzed redox by CdTe quantum dots; Sensitivity and selectivity for singlet oxygen.