A molecule carrier

    Authors

    K. L. Wong; G. Pawin; K. Y. Kwon; X. Lin; T. Jiao; U. Solanki; R. H. J. Fawcett; L. Bartels; S. Stolbov;T. S. Rahman

    Comments

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    Abbreviated Journal Title

    Science

    Keywords

    LARGE ORGANIC-MOLECULES; SINGLE-MOLECULE; SURFACE; DYNAMICS; DIFFUSION; HYDROGEN; METALS; ENERGY; Multidisciplinary Sciences

    Abstract

    We found that anthraquinone diffuses along a straight line across a flat, highly symmetric Cu(111) surface. It can also reversibly attach one or two CO2 molecules as "cargo" and act as a "molecule carrier," thereby transforming the diffusive behavior of the CO2 molecules from isotropic to linear. Density functional theory calculations indicated a substrate-mediated attraction of similar to 0.12 electron volt (eV). Scanning tunneling microscopy revealed individual steps of the molecular complex on its diffusion pathway, with increases of similar to 0.03 and similar to 0.02 eV in the diffusion barrier upon attachment of the first and second CO2 molecule, respectively.

    Journal Title

    Science

    Volume

    315

    Issue/Number

    5817

    Publication Date

    1-1-2007

    Document Type

    Article

    Language

    English

    First Page

    1391

    Last Page

    1393

    WOS Identifier

    WOS:000244752200027

    ISSN

    0036-8075

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