Tilted face-centered-cubic supercrystals of PbS nanocubes.
We demonstrate a direct fabrication of PbS nanocube supercrystals without size-selection pretreatment on the building blocks. Electron microscopic and synchrotron small angle X-ray scattering analyses confirm that nanocubes pack through a tilted face-centered-cubic (fcc) arrangement, that is, face-to-face along the <110>(super) direction, resulting in a real packing efficiency of as high as ∼83%. This new type of superstructure consisting of nanocubes as building blocks, reported here for the first time, is considered the most stable surfactant-capped nanocube superstructure determined by far.
Department of Chemistry, State University of New York at Binghamton, Binghamton, New York 13902, USA.
Zewei
Z
Quan
Welley Siu
WS
Loc
Cuikun
C
Lin
Zhiping
Z
Luo
Kaikun
K
Yang
Yuxuan
Y
Wang
Howard
H
Wang
Zhongwu
Z
Wang
Jiye
J
Fang