A Molecule Carrier
| Autor: | Talat S. Rahman, Greg Pawin, Ki-Young Kwon, Kin L. Wong, U. Solanki, R. H. J. Fawcett, Ludwig Bartels, Sergey Stolbov, Xing Lin, T. Jiao |
|---|---|
| Rok vydání: | 2007 |
| Předmět: | |
| Zdroj: | Science. 315:1391-1393 |
| ISSN: | 1095-9203 0036-8075 |
| Popis: | 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 CO 2 molecules as “cargo” and act as a “molecule carrier,” thereby transforming the diffusive behavior of the CO 2 molecules from isotropic to linear. Density functional theory calculations indicated a substrate-mediated attraction of ∼0.12 electron volt (eV). Scanning tunneling microscopy revealed individual steps of the molecular complex on its diffusion pathway, with increases of ∼0.03 and ∼0.02 eV in the diffusion barrier upon attachment of the first and second CO 2 molecule, respectively. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|