We found a large difference in the kinetic profile of the growth of the blue emission between MLA-and OA-mediated synthesis (Fig. , see also Figures and). In the OAmediated synthesis, the emission monitored at 453 nm started immediately after dilution with toluene (black curve Fig. ); however, in the MLA-mediated synthesis, we found a long induction time followed by a slow growth of the deep blue emission. The maximum PLQY of the rapidly grown OA•MA•QD4 was only 24%, whereas it was >95% for MLA•MA•QD4. The data suggest that the MLA-mediated growth went through a preequilibrium involving an intermediate that grows rapidly once formed (cf Fig. ).