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Single‐Step Self‐Organization of Ordered Macroporous Nanocrystal Thin Films
Author(s) -
Shah P.S.,
Sigman M.B.,
Stowell C.A.,
Lim K.T.,
Johnston K.P.,
Korgel B.A.
Publication year - 2003
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.200304903
Subject(s) - nanocrystal , materials science , dispersity , coalescence (physics) , condensation , evaporation , nanotechnology , thin film , chemical engineering , self assembly , porosity , composite material , polymer chemistry , physics , astrobiology , engineering , thermodynamics
Spatially organized macroporous thin films made of close‐packed nanocrystals (see Figure) can be formed using a single‐step dispersion evaporation technique. Water condensation is induced, in which droplet coalescence is prevented by interfacially active nanocrystals, allowing close‐packed arrays of monodisperse water droplets to form. The hydrophobic nanocrystals then mold themselves around the water droplet template, leading to highly ordered porous nanocrystal films.