Oriented crystalline monolayers and bilayers of 2 x 2 silver(1) grid architectures at the air-solution interface: Their assembly and crystal structure elucidation

J. Weissbuch, P.N.W. Baxter, I. Kuzmenko, H. Cohen, S. Cohen, K. Kjær, P.B. Howes, J. Als-Nielsen, J.M. Lehn, L. Leiserowitz, M. Lahav

    Research output: Contribution to journalJournal articleResearchpeer-review

    Abstract

    Oriented crystalline monolayers, similar to 14 Angstrom thick, of a 2 x 2 Ag+ grid complex, self-assembled at the air-solution interface starting from an water-insoluble ligand 3,6-bis[2-(6-phenylpyridine)]pyridazine spread on silver-ion-containing solutions,were examined by grazing-incidence X-ray diffraction and specular X-ray reflectivity using synchrotron radiation. The monolayer structure was refined, including a determination of the positions of the counterions, with the SHELX-97 computer program. The monolayers were transferred from the interface onto various solid supports and visualized by scanning force microscopy, and characterized by X-ray photoelectron spectroscopy in terms of molecular structure. On surface compression, the initial self-assembled monolayer undergoes a transition to a crystalline bilayer in which the two layers, almost retaining the original arrangement, are in registry. Such a phase transition is of relevance to the understanding of crystal nucleation.
    Original languageEnglish
    JournalChemistry: A European Journal
    Volume6
    Issue number4
    Pages (from-to)725-734
    ISSN0947-6539
    DOIs
    Publication statusPublished - 2000

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