title: Facile synthesis of PbS truncated octahedron crystals with high symmetry and their large-scale assembly into regular patterns by a simple solution route.
abstract: Highly regular patterns with amazingly well-defined uniform truncated octahedrons of PbS nanocrystals as building blocks were prepared via a simple one-pot solution method. Each truncated octahedron has a composition of six {100} squares and eight {111} hexagons, and the overall structure shares 24 identical edges in a mecon way. Hexapod PbS, six-arm star-shaped dendrites, octahedron and truncated cubes were also fabricated. Structural and optical properties as well as morphological evolutions were studied by transmission electron microscopy, scanning electron microscopy, X-ray diffraction, and a confocal Raman spectroscopy. A mechanism for the formation of the PbS nanocrystals as well as their inner structure was tentatively proposed based on the characterization results.
authors.affiliation: School of Materials Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing, 100083, China.
authors.forename: Ning
authors.initials: N
authors.lastname: Wang
authors.forename: Xia
authors.initials: X
authors.lastname: Cao
authors.forename: Lin
authors.initials: L
authors.lastname: Guo
authors.forename: Shihe
authors.initials: S
authors.lastname: Yang
authors.forename: Ziyu
authors.initials: Z
authors.lastname: Wu
mesh_terms: D003102:Colloids / Q000737:chemistry*; D003460:Crystallization / Q000379:methods*; D007854:Lead / Q000737:chemistry*; D046911:Macromolecular Substances / Q000737:chemistry; D008422:Materials Testing; D008968:Molecular Conformation; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure*; D036103:Nanotechnology / Q000379:methods*; D010316:Particle Size; D012996:Solutions; D013440:Sulfides / Q000737:chemistry*; D013499:Surface Properties
chemical_list: D003102:Colloids; D046911:Macromolecular Substances; D012996:Solutions; D013440:Sulfides; C018391:lead sulfide; D007854:Lead