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Figure 2
In situ GISAXS patterns and corresponding structures of solvent vapour-mediated transformations in a PbS nanocrystal superlattice. (a) and (e) Disordered film in a saturated octane vapour environment. (b) Initial superlattice nucleation in a subsaturated vapour environment. (c) and (f) Face-centred cubic (f.c.c.) nanocrystal superlattice formed by drying the film. (d) and (g) Body-centred tetragonal (b.c.t.) nanocrystal superlattice formed by drying in the presence of He purge. (h) Molecular dynamics snapshot of two nanocrystals and (i) of ligands between facets of proximate nanocrystals. δ and LOA denote the interparticle distance and length of the oleic acid ligand, respectively. Reprinted with permission from Bian et al. (2011BB4). Copyright (2011) American Chemical Society.

IUCrJ
Volume 2| Part 2| February 2015| Pages 292-304
ISSN: 2052-2525
doi:10.1107/S2052252514026062