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Nanoparticle‐Stabilized Double Emulsions and Compressed Droplets
Author(s) -
Miesch Caroline,
Kosif Irem,
Lee Eunji,
Kim JungKeun,
Russell Thomas P.,
Hayward Ryan C.,
Emrick Todd
Publication year - 2012
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201106665
Subject(s) - coalescence (physics) , emulsion , nanoparticle , materials science , chemical engineering , nanotechnology , solvent , evaporation , water in oil , oil droplet , double layer (biology) , chemistry , organic chemistry , layer (electronics) , thermodynamics , physics , astrobiology , engineering
Stable double emulsions , both oil‐in‐water‐in‐oil and water‐in‐oil‐in‐water, stabilized by two types of nanoparticles residing at the o/w interfaces (see picture; red: CdSe quantum dots) were prepared in a simple fashion by shaking, and with narrow size distributions by microcapillary flow focusing. These double‐emulsion droplets proved stable against coalescence throughout solvent evaporation, allowing for formation of nanoparticle foams and hexagonally arrayed structures.