Ultrathin Double-Shell Capsules for High Performance Photon Upconversion.

Kang, Ji-Hwan; Lee, Sang Seok; Guerrero, Josefa; Fernandez-Nieves, Alberto; Kim, Shin-Hyun; Reichmanis, Elsa · Adv Mater · 2017

basic_science · Level V

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Abstract

Triplet-fusion-based photon upconversion capsules with ultrathin double shells are developed through a single dripping instability in a microfluidic flow-focusing device. An inner separation layer allows use of a brominated hydrocarbon oil-based fluidic core, demonstrating significantly enhanced upconversion quantum yield. Furthermore, a perfluorinated photocurable monomer serves as a transparent shell phase with remote motion control through magnetic nanoparticle incorporation.