title: Hierarchical assembly of ultranarrow alkylamine-coated ZnS nanorods: a synchrotron surface X-ray diffraction study.
abstract: The packing of anisotropic ultranarrow nanoparticles ( r <or= 0.5 nm) in Langmuir films was investigated for two types of nanoparticles: short ZnS wires coated with tetradecylamine and ZnS rods coated with octadecylamine. In situ grazing incidence small-angle X-ray scattering (GISAXS) revealed the formation, even under zero pressure, of ordered superstructures on the water surface consisting of alternating nanoparticles. A hierarchical "packing model" is proposed, based on GISAXS, transmission electron microscopy, thermogravimetric analysis, and grazing incidence X-ray diffraction of pure surfactant Langmuir films.
authors.affiliation: Department of Materials Engineering, Ilse Katz Institute of Nanotechnology, Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel.
authors.forename: Nataly
authors.initials: N
authors.lastname: Belman
authors.forename: Somobrata
authors.initials: S
authors.lastname: Acharya
authors.forename: Oleg
authors.initials: O
authors.lastname: Konovalov
authors.forename: Alexei
authors.initials: A
authors.lastname: Vorobiev
authors.forename: Jacob
authors.initials: J
authors.lastname: Israelachvili
authors.forename: Shlomo
authors.initials: S
authors.lastname: Efrima
authors.forename: Yuval
authors.initials: Y
authors.lastname: Golan