Two-dimensional delocalized states in organometallic bis-acetylide networks on Ag(111)
The electronic structure of surface-supported organometallic networks with Ag-bis-acetylide bonds that are intermediate products in the bottom-up synthesis of graphdiyne and graphdiyne-like networks were studied. Scanning tunneling microscopy (STM) and spectroscopy (STS) reveal a frontier, unoccupie...
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| Veröffentlicht in: | Nanoscale 2018-02, Vol.10 (8), p.3769-3776 |
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| creator | Yang, Zechao Gebhardt, Julian Schaub, Tobias A Sander, Tim Schönamsgruber, Jörg Soni, Himadri Görling, Andreas Kivala, Milan Maier, Sabine |
| description | The electronic structure of surface-supported organometallic networks with Ag-bis-acetylide bonds that are intermediate products in the bottom-up synthesis of graphdiyne and graphdiyne-like networks were studied. Scanning tunneling microscopy (STM) and spectroscopy (STS) reveal a frontier, unoccupied electronic state that is delocalized along the entire organometallic network and proves the covalent nature of the Ag-bis-acetylide bonds. Density-functional theory (DFT) calculations corroborate the spatial distribution of the observed delocalized state and attribute it to band mixing of carbon and silver atoms combined with n-doping of the metal surface. The metal-bis-acetylide bonds are typical metal-organic bonds with mixed character containing covalent and strong ionic contributions. Moreover, the organometallic networks exhibit a characteristic graphene-like band structure with linear band dispersion at each K point. |
| doi_str_mv | 10.1039/c7nr08238j |
| format | Article |
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Scanning tunneling microscopy (STM) and spectroscopy (STS) reveal a frontier, unoccupied electronic state that is delocalized along the entire organometallic network and proves the covalent nature of the Ag-bis-acetylide bonds. Density-functional theory (DFT) calculations corroborate the spatial distribution of the observed delocalized state and attribute it to band mixing of carbon and silver atoms combined with n-doping of the metal surface. The metal-bis-acetylide bonds are typical metal-organic bonds with mixed character containing covalent and strong ionic contributions. 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| source | Royal Society Of Chemistry Journals 2008- |
| subjects | Bonding strength Chemical bonds Density functional theory Electron states Electronic structure Networks Silver Spatial distribution |
| title | Two-dimensional delocalized states in organometallic bis-acetylide networks on Ag(111) |
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