The Enhanced Electrochemiluminescence of Luminol by Resonance Energy Transfer with Solid-phase CdTe Quantum Dots

Herein a new approach will be reported to enhance the electrochemiluminescence (ECL) of luminol by resonance energy transfer (ECRET) with solid-phase CdTe quantum dots (QDs) which were immobilized on the surface of indium tin oxide coated glass. This progressive result suggests a solid-phase ECL substrate which commenced more sensitive response upon luminol needless any co-reactant. Also the graphene oxide was applied to promote the performance of matrix. On this solid-phase ECL substrate, the detection limit of luminol decreased about one order of magnitude, meanwhile the practicable pH range was enlarged. Also it provides an excellent platform for H2O2 or oxygen monitoring due to they further intensified the ECL. The detection limit for H2O2 decreased two to three orders of magnitudes (to the level of 10−11 M).