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On-surface synthesis of super-heptazethrene.
Chemical Communications ( IF 4.3 ) Pub Date : 2020-05-29 , DOI: 10.1039/d0cc02513e
Shantanu Mishra 1 , Jason Melidonie , Kristjan Eimre , Sebastian Obermann , Oliver Gröning , Carlo A Pignedoli , Pascal Ruffieux , Xinliang Feng , Roman Fasel
Affiliation  

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).

中文翻译:

超级庚二烯的表面合成。

并蒽是模型双自由基,在自旋电子学和光电子学中具有潜在的应用。尽管溶液中的化学成分很丰富,但尚未证明zethrenes的表面合成。我们报告了Au(111)上的超庚并蒽的表面合成。扫描隧道光谱研究表明,超庚并蒽的HOMO-LUMO间隙极低,为230 meV,与溶液相和固态的开壳单线态基态相反,它很可能采用闭壳式在Au(111)上的状态。
更新日期:2020-07-07
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