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).
| Identifer | oai:union.ndltd.org:DRESDEN/oai:qucosa:de:qucosa:77018 |
| Date | 03 January 2022 |
| Creators | Mishra, Shantanu, Melidonie, Jason, Eimre, Kristjan, Obermann, Sebastian, Gröning, Oliver, Pignedoli, Carlo A., Ruffieux, Pascal, Feng, Xinliang |
| Publisher | RSC |
| Source Sets | Hochschulschriftenserver (HSSS) der SLUB Dresden |
| Language | English |
| Detected Language | English |
| Type | info:eu-repo/semantics/publishedVersion, doc-type:article, info:eu-repo/semantics/article, doc-type:Text |
| Rights | info:eu-repo/semantics/openAccess |
| Relation | 0022-4936, 1364-548X, 10.1039/D0CC02513E, info:eu-repo/grantAgreement/European Union/Horizon 2020 - MSCA-ITN-ETN/ 813036//Bottom-Up generation of atomicalLy precise syntheTIc 2D MATerials for high performance in energy and Electronic applications – A multi-site innovative training action/ULTIMATE, info:eu-repo/grantAgreement/European Union/H2020 - SGA-RIA/785219//Graphene Flagship Core Project 2/GrapheneCore2, info:eu-repo/grantAgreement/European Commission/H2020 - ERC - ERC-COG/819698//Development of Thiophene Based Conjugated Polymers in Two Dimensions/T2DCP |
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