On-surface synthesis of super-heptazethrene
| Autor: | Oliver Gröning, Pascal Ruffieux, Shantanu Mishra, Carlo A. Pignedoli, Kristjan Eimre, Roman Fasel, Xinliang Feng, Sebastian Obermann, Jason Melidonie |
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| Rok vydání: | 2020 |
| Předmět: |
Surface (mathematics)
Spintronics 530 Physics 010405 organic chemistry Heptazethrene Scanning tunneling spectroscopy Metals and Alloys General Chemistry 010402 general chemistry 01 natural sciences Solution phase Catalysis 0104 chemical sciences Surfaces Coatings and Films Electronic Optical and Magnetic Materials Singlet ground state Chemical physics 540 Chemistry Materials Chemistry Ceramics and Composites Ground state |
| Zdroj: | Chemical Communications |
| ISSN: | 1364-548X 1359-7345 |
| Popis: | Zethrenes are model diradicaloids with potential applications in spintronics and optoelectronics. Despite a rich chemistry in solution, on-surface synthesis of zethrenes has never been demonstrated. We report the on-surface synthesis of super-heptazethrene on Au(111). Scanning tunneling spectroscopy investigations reveal that super-heptazethrene exhibits an exceedingly low HOMO-LUMO gap of 230 meV and, in contrast to its open-shell singlet ground state in the solution phase and in the solid-state, likely adopts a closed-shell ground state on Au(111). |
| Databáze: | OpenAIRE |
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