Selectivity of single-molecule dynamics in 2D molecular sieves

Guillaume Schull, Ludovic Douillard, Céline Fiorini-Debuisschert, Fabrice Charra, Fabrice Dominique Mathevet, David Kreher, André Jean Attias

    Research output: Contribution to journalArticlepeer-review

    67 Citations (Scopus)

    Abstract

    The size and shape selectivity of a two dimensional (2D) molecular sieve, consisting of a molecularly engineered host matrix that is self assembled at the liquid solid interface is described. The size and shape dependant dynamics of various guest molecules was analyzed in situ and in real time. The temperature dependence of the diffusion dynamics of the different guests was compared, which permits molecular engineering rules for turning the selectivity of the cavities and channels to be derived. Typical room temperature scanning tunneling microscopy (STM) image was obtained from self-assembled aromatic compound on highly oriented pyrolytic graphite (HOPG) before the addition of guest molecules. The experimental data obeys an Arrhenius dependence for each of the guest molecules, with a pre-exponential factor of the order of 5×10×14 Hz that could be considered as an intrinsic parameter directly related to the diffusion process in a 2D matrix.

    Original languageEnglish
    Pages (from-to)2954-2957
    Number of pages4
    JournalAdvanced Materials
    Volume18
    Issue number22
    DOIs
    Publication statusPublished - Nov 17 2006

    All Science Journal Classification (ASJC) codes

    • Materials Science(all)
    • Mechanics of Materials
    • Mechanical Engineering

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