The review provides an excellent overview of QDs as electrochemiluminescent (ECL) platforms, particularly their roles as luminophores, coreactants, and ECL-RET donors/acceptors. However, the discussion on the choice of modification methods (e.g., capping vs. ligand exchange vs. encapsulation) lacks clarity in terms of quantitative criteria like cost, stability, and performance trade-offs. Could the authors clarify if certain approaches are preferred for specific sensing applications or analyte types? Additionally, given the increasing concern over the environmental impact of QDs, particularly cadmium-based ones, do the authors foresee alternative materials gaining traction in next-generation ECL sensors?
