On-surface synthesis of super-heptazethrene?
Chemical Communications Pub Date: 2020-05-29 DOI: 10.1039/D0CC02513E
Abstract
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).
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Journal Name：Chemical Communications
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CAS no.: 89640-58-4
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