Sequential microfluidic flow synthesis of CePO4 nanorods decorated with emission tunable quantum dots

CePO4 nanorods decorated with QDs (QDs@CePO4) can be prepared in a sequential, aqueous procedure under continuous flow using a rotating tube processor and a narrow channel reactor. The emission from the QD@CePO4 is tunable from green to red by simply adjusting the feeding rate, which in turn regulates the particle size of the QDs. The Ce3+ ions in the QDs@CePO4 serve as an efficient fluorescence resonance energy transfer (FRET) donor, effectively enlarging the Stokes shift of the QDs.