Direct imaging by atomic force microscopy of surface-localized self-assembled monolayers on a cuprate superconductor and surface X-ray scattering analysis of analogous monolayers on the surface of water

Steen B. Schougaard, Niels Reitzel, Thomas Bjørnholm, Kristian Kjær, Torben R. Jensen, Olga E. Shmakova, Ramon Jr. Colorado, T. Randall Lee, J.-H. Choi, John T. Markert, David Derro, Alex de Lozanne, John T. McDevitt

Abstract

A self-assembled monolayer of CF3(CF2)(3)(CH2)(11)NH2 atop the (001) surface of the high-temperature superconductor YBa2Cu3O7-x was imaged by atomic force microscopy (AFM). The AFM images provide direct 2D-structural evidence for the epitaxial 5.5 angstrom square root 2 x root 2R45 degrees unit cell previously predicted for alkyl amines by molecular modeling [J.E. Ritchie, C.A. Wells, J.-P. Zhou, J. Zhao, J.T. McDevitt, C.R. Ankrum, L. Jean, D.R. Kanis, J. Am. Chem. Soc. 120 (1998) 2733]. Additionally, the 3D structure of an analogous Langmuir monolayer of CF3(CF2)9(CH2)(11)NH2 on water was studied by grazing-incidence X-ray diffraction and specular X-ray reflectivity. Structural differences and similarities between the water-supported and superconductor-localized monolayers are discussed.
OriginalsprogEngelsk
TidsskriftThin Solid Films
Vol/bind515
Sider (fra-til)8424-8429
Antal sider6
ISSN0040-6090
StatusUdgivet - 2007

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