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On-surface synthesis of super-heptazethrene

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).

Identiferoai:union.ndltd.org:DRESDEN/oai:qucosa:de:qucosa:77018
Date03 January 2022
CreatorsMishra, Shantanu, Melidonie, Jason, Eimre, Kristjan, Obermann, Sebastian, Gröning, Oliver, Pignedoli, Carlo A., Ruffieux, Pascal, Feng, Xinliang
PublisherRSC
Source SetsHochschulschriftenserver (HSSS) der SLUB Dresden
LanguageEnglish
Detected LanguageEnglish
Typeinfo:eu-repo/semantics/publishedVersion, doc-type:article, info:eu-repo/semantics/article, doc-type:Text
Rightsinfo:eu-repo/semantics/openAccess
Relation0022-4936, 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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