title: Pressure Processing of Nanocube Assemblies Toward Harvesting of a Metastable PbS Phase.
abstract: This materials-by-design approach combines nanocrystal assembly with pressure processing to drive the attachment and coalescence of PbS nanocubes along directed crystallographic dimensions to form a large 3D porous architecture. This quenchable and strained mesostructure holds the storage of large internal stress, which stabilizes the high-pressure PbS phase in atmospheric conditions. Nanocube fusion enhances the structural stability; the large surface area maintains the size-dependent properties.
authors.affiliation: Beijing National Laboratory for Molecular Sciences, Key Laboratory of Analytical Chemistry for Living Biosystems, Institute of Chemistry, Chinese Academy of Science, Beijing, 100190, China.|Department of Chemistry, University of Florida, Gainesville, FL, 32611, USA.
authors.forename: Tie
authors.initials: T
authors.lastname: Wang
authors.affiliation: Cornell High Energy Synchrotron Source, Cornell University, Ithaca, NY, 14853, USA.
authors.forename: Ruipeng
authors.initials: R
authors.lastname: Li
authors.affiliation: Department of Chemistry, State University of New York at Binghamton, NY, 13902, USA.
authors.forename: Zewei
authors.initials: Z
authors.lastname: Quan
authors.affiliation: Department of Chemistry, State University of New York at Binghamton, NY, 13902, USA.
authors.forename: Welley Siu
authors.initials: WS
authors.lastname: Loc
authors.affiliation: Department of Earth and Atmospheric Sciences, Cornell University, Ithaca, NY, 14853, USA.
authors.forename: William A
authors.initials: WA
authors.lastname: Bassett
authors.affiliation: Earth and Environmental Sciences Division, Los Alamos National Laboratory, Los Alamos, NM, 87545, USA.
authors.forename: Hongwu
authors.initials: H
authors.lastname: Xu
authors.affiliation: Department of Chemistry, University of Florida, Gainesville, FL, 32611, USA.
authors.forename: Y Charles
authors.initials: YC
authors.lastname: Cao
authors.affiliation: Department of Chemistry, State University of New York at Binghamton, NY, 13902, USA.
authors.forename: Jiye
authors.initials: J
authors.lastname: Fang
authors.affiliation: Cornell High Energy Synchrotron Source, Cornell University, Ithaca, NY, 14853, USA.
authors.forename: Zhongwu
authors.initials: Z
authors.lastname: Wang
mesh_terms: D007854:Lead / Q000737:chemistry; D008855:Microscopy, Electron, Scanning; D046529:Microscopy, Electron, Transmission; D053758:Nanoparticles / Q000737:chemistry; D036103:Nanotechnology / Q000379:methods; D010316:Particle Size; D044367:Phase Transition; D016062:Porosity; D011312:Pressure; D053838:Scattering, Small Angle; D013314:Stress, Mechanical; D013440:Sulfides / Q000737:chemistry; D014961:X-Ray Diffraction
chemical_list: D013440:Sulfides; C018391:lead sulfide; D007854:Lead
keywords: metastable phases; nanocrystal assemblies; porous architectures; pressure processing