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Waterproof Light‐Emitting Metal Halide Perovskite–Polymer Composite Microparticles Prepared via Microfluidic Device
Author(s) -
Kim Kyung Hak,
Park Jin Kyoung,
Im Sang Hyuk,
Park Bum Jun
Publication year - 2021
Publication title -
particle and particle systems characterization
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.877
H-Index - 56
eISSN - 1521-4117
pISSN - 0934-0866
DOI - 10.1002/ppsc.202100006
Subject(s) - polymer , polymerization , halide , materials science , microfluidics , chemical engineering , composite number , aqueous solution , nanoparticle , microparticle , polymer chemistry , nanotechnology , chemistry , inorganic chemistry , composite material , organic chemistry , engineering
Waterproof light‐emitting perovskite–polymer composite microparticles are synthesized by a continuous one‐step microfluidic reactor, which enables in situ production of metal halide perovskite nanoparticles (MHP‐NPs) by the ligand‐assisted reprecipitation process (LARP) and the encapsulation of MHP‐NPs by UV cross‐linking polymerization in the microfluidic channel. Successful encapsulation of MHP‐NPs in polymer microparticles is attributed to the co‐dispersion of an LARP solution and UV polymerizable solution in an aqueous continuous phase within the microfluidic channel, in which N , N ‐dimethylformamide, in co‐dispersion droplets, is continuously extracted to the aqueous medium upon UV polymerization. MHP‐NPs–polymer composite microparticles show enhanced stability against air and moisture.