Precision tuning of rare-earth-doped upconversion nanoparticles via droplet-based microfluidic screening

Abstract

A droplet microfluidic-based synthesis approach allows rapid optimization and fine emission color tuning of rare-earth-doped upconversion nanoparticles.

Multispectral upconversion nanoparticles for near infrared encoding of wearable devices

“…Y 3+ ion in the host lattice was substituted for other Ln 3+ ions. 38,39 UCNPs doped with a combination of sensitizer (e.g., Yb 3+ , Tm 3+ ) and activator (e.g., Er 3+ , Tm 3+ ) can be excited by 980 nm NIR light to emit upconverted light. Multiple sensitizers are excited and the energy is transferred to activators.…”

Advancements in droplet reactor systems represent new opportunities in chemical reactor engineering: A perspective

“…[103] Compared with droplet reactors in emulsion and suspension polymerization, the parallel design of microfluidic channels exhibits particular compatibility with high-throughput test methods. Efforts have been made to precisely modulate the droplet composition, [104,105] which is feasible for semi-batch droplet reactors in emulsion and suspension polymerization. However, when applied to microfluidic design, this often requires a delicate channel architecture, increasing the complexity and decreasing the generalizability of the microfluidic devices.…”

A versatile non-fouling multi-step flow reactor platform: demonstration for partial oxidation synthesis of iron oxide nanoparticles

“…[1][2][3][4][5][6][7] Their ease of automation is also why flow reactors are in demand for high-throughput screening as well as self-optimising reactor platforms. [8][9][10][11][12][13] Not only for fine chemical, but also polymer as well as micro and nanoparticle synthesis, such platforms combining flow reactors, intelligent algorithms and real-time material characterisation can pave the way to fully computer aided chemical science tuning molecular or particle properties. [14][15][16][17][18][19] The commonly used flow reactors which were developed for wet-chemical syntheses of small and large molecules, however, are often unsuitable for fouling prone syntheses, and nano or micro particle syntheses in particular.…”

“…1–7 Their ease of automation is also why flow reactors are in demand for high-throughput screening as well as self-optimising reactor platforms. 8–13 Not only for fine chemical, but also polymer as well as micro and nanoparticle synthesis, such platforms combining flow reactors, intelligent algorithms and real-time material characterisation can pave the way to fully computer aided chemical science tuning molecular or particle properties. 14–19…”