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

Abstract

CePO(4) nanorods decorated with QDs (QDs@CePO(4)) 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@CePO(4) is tunable from green to red by simply adjusting the feeding rate, which in turn regulates the particle size of the QDs. The Ce(3+) ions in the QDs@CePO(4) serve as an efficient fluorescence resonance energy transfer (FRET) donor, effectively enlarging the Stokes shift of the QDs.

Optimising a vortex fluidic device for controlling chemical reactivity and selectivity

“…Microfluidics also encompasses dynamic fluidic thin films generated centrifugally by passing liquids over rotating surfaces, as in spinning disc processors (SDPs)3456789101112131415161718 and horizontally aligned rotating tube processors (RTPs) with open ends18192021222324. These processors are effective in controlling chemical reactions34567891011121322, probing the structure of self organised systems14, and exfoliation and scrolling of graphite and hexagonal boron nitride ( h -BN)318192021222324. However, the volumes of liquid required for maintaining constant shear intensity in the fluids flowing over the rotating surfaces, coupled with finite residence times and high cost of construction, can limit the scope of their applications.…”

“…Intriguingly, for the latter, several passes are required to move beyond the chalcone intermediate to form significant quantities of the desired 1,5-diketone9. The RTP has jet feeds delivering solutions intensely mixed at one end to go through the rapidly rotating tube, with the product collected at the other end18192021222324. Here the residence times can be minutes, depending on flow rates and the length of the tube.…”

Precise Synthesis of Well‐Defined Inorganic‐Organic Hybrid Particles

“…Khan et al., 2007 Lee et al., 2008 Yang et al., 2009 Abou‐Hassan et al., 2009 Duraiswamy et al., 2010 Kikkeri et al., 2010 Lan et al., 2011 Wan et al., 2011 Fang et al., 2010 Duraiswamy et al., 2010…”

Controlled Crystallization of Sodium Chloride Nanocrystals in Microdrop­lets Produced by Electrospray from an Ultra‐Dilute Solution

“…Zhu [9] obtained LaF 3 nanoparticles with a mean diameter of 4.5 nm and LaPO 4 nanorods with lengths of 60-70 nm and diameters of 10-15 nm in a microfluidic reactor by microwave irradiation. Iyer [10] synthesized CePO 4 nanorods decorated with emissiontunable quantum dots with excellent fluorescence properties. This technology is now widely used in various fields.…”