Self-Assembly at the Air-Water Interface. In-Situ Preparation of Thin Films of Metal Ion Grid Architectures
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Weissbuch, Isabelle; Baxter, Paul N. W.; Cohen, Sidney; Cohen, Hagai; Kjaer, Kristian; Howes, Paul B.; Als-Nielsen, Jens; Hanan, Garry S.; Schubert, Ulrich S.; Lehn, Jean-Marie; Leiserowitz, Leslie; Lahav, Meir
- Abstract:
- Oriented crystalline films, 11-20 Å thick, of metal ion complexes of the grid type [Co4L4]8+â8PF6
-
and [Ag9L6]9+â9CF3SO3
-, based on various ligands L, were prepared in-situ at the air-aqueous solution interface
by the interaction of the free ligand molecules spread onto aqueous solutions containing Co2+ or Ag+ ions.
The structure of the complex architectures composed of a 2 2 Co2+ grid coordinated to four ligand molecules
and a 3 3 Ag+ grid coordinated to six ligand molecules as well as their molecular organization in thin films
were characterized by grazing incidence synchrotron X-ray diffraction (GIXD) and specular X-ray reflectivity
(XR) measurements performed at the air-aqueous solution interface and by UV, X-ray photoelectron spectroscopy
(XPS), and scanning force microscopy (SFM) after film transfer onto various solid supports. The results open
perspectives toward an implementation of the air-water interface for the self-assembly and subsequent deposition
of organized arrays of complex inorganic architectures onto solid support.
- Year:
- 1998
- Type of Publication:
- Article
- Journal:
- Journal of the American Chemical Society
- Volume:
- 120
- Pages:
- 4850 – 4860