Remarkably stable metal-organic frameworks on an inert substrate: M-TCNQ on graphene (M = Ni, Fe, Mn)

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dc.contributor.authorJakub, Zdeněkcs
dc.contributor.authorKurowská, Annacs
dc.contributor.authorHerich, Ondrejcs
dc.contributor.authorČerná, Lenkacs
dc.contributor.authorKormoš, Lukášcs
dc.contributor.authorTrllová Shahsavar, Azincs
dc.contributor.authorProcházka, Pavelcs
dc.contributor.authorČechal, Jancs
dc.coverage.issue26cs
dc.coverage.volume14cs
dc.date.issued2022-07-07cs
dc.description.abstractPotential applications of 2D metal-organic frameworks (MOF) require the frameworks to be monophase and well-defined at the atomic scale, to be decoupled from the supporting substrate, and to remain stable at the application conditions. Here,we present three systems meeting this elusive set of requirements: M-TCNQ (M = Ni, Fe, Mn) on epitaxial graphene/Ir(111). We study the systems experimentally by scanning tunneling microscopy, low energy electron microscopy and x-ray photoelectron spectroscopy. When synthesized on graphene, the 2D M-TCNQ MOFs are monophase with M1(TCNQ)1 stoichiometry, no alternative structure was observed with slight variation of the preparation protocol. We further demonstrate a remarkable chemical and thermal stability of TCNQ-based 2D MOFs: All the studied systems survive exposure to ambient conditions, with Ni-TCNQ doing so without any significant changes to its atomic-scale structure or chemical state. Thermally, the most stable system is Fe-TCNQ which remains stable above 500 °C, while all the tested MOFs survive heating to 250 °C. Overall, the modular M-TCNQ/graphene system combines the atomic-scale definition required for fundamental studies with the robustness and stability needed for applications, thus we consider it an ideal model for research in single atom catalysis, spintronics or high-density storage media.en
dc.description.abstractPotential applications of 2D metal-organic frameworks (MOF) require the frameworks to be monophase and well-defined at the atomic scale, to be decoupled from the supporting substrate, and to remain stable at the application conditions. Here,we present three systems meeting this elusive set of requirements: M-TCNQ (M = Ni, Fe, Mn) on epitaxial graphene/Ir(111). We study the systems experimentally by scanning tunneling microscopy, low energy electron microscopy and x-ray photoelectron spectroscopy. When synthesized on graphene, the 2D M-TCNQ MOFs are monophase with M1(TCNQ)1 stoichiometry, no alternative structure was observed with slight variation of the preparation protocol. We further demonstrate a remarkable chemical and thermal stability of TCNQ-based 2D MOFs: All the studied systems survive exposure to ambient conditions, with Ni-TCNQ doing so without any significant changes to its atomic-scale structure or chemical state. Thermally, the most stable system is Fe-TCNQ which remains stable above 500 °C, while all the tested MOFs survive heating to 250 °C. Overall, the modular M-TCNQ/graphene system combines the atomic-scale definition required for fundamental studies with the robustness and stability needed for applications, thus we consider it an ideal model for research in single atom catalysis, spintronics or high-density storage media.en
dc.formattextcs
dc.format.extent9507-9515cs
dc.format.mimetypeapplication/pdfcs
dc.identifier.citationNanoscale. 2022, vol. 14, issue 26, p. 9507-9515.en
dc.identifier.doi10.1039/d2nr02017ccs
dc.identifier.issn2040-3364cs
dc.identifier.orcid0000-0001-9538-9087cs
dc.identifier.orcid0000-0002-8646-8434cs
dc.identifier.orcid0000-0001-9099-4595cs
dc.identifier.orcid0000-0001-7120-7488cs
dc.identifier.orcid0000-0002-4727-4776cs
dc.identifier.orcid0000-0003-4745-8441cs
dc.identifier.other178050cs
dc.identifier.researcheridAAW-8780-2020cs
dc.identifier.researcheridJ-5596-2014cs
dc.identifier.researcheridG-3038-2018cs
dc.identifier.researcheridD-6994-2012cs
dc.identifier.scopus57191076802cs
dc.identifier.scopus57070117100cs
dc.identifier.scopus55710905700cs
dc.identifier.urihttp://hdl.handle.net/11012/208211
dc.language.isoencs
dc.publisherRoyal Society of Chemistrycs
dc.relation.ispartofNanoscalecs
dc.relation.urihttps://pubs.rsc.org/en/content/articlelanding/2022/NR/D2NR02017Ccs
dc.rightsCreative Commons Attribution 4.0 Internationalcs
dc.rights.accessopenAccesscs
dc.rights.sherpahttp://www.sherpa.ac.uk/romeo/issn/2040-3364/cs
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/cs
dc.subjectSINGLE-ATOM CATALYSTSen
dc.subjectOXYGEN REDUCTIONen
dc.subjectCHARGE-TRANSFERen
dc.subjectNETWORKSen
dc.subjectMONOLAYERen
dc.subjectSINGLE-ATOM CATALYSTS
dc.subjectOXYGEN REDUCTION
dc.subjectCHARGE-TRANSFER
dc.subjectNETWORKS
dc.subjectMONOLAYER
dc.titleRemarkably stable metal-organic frameworks on an inert substrate: M-TCNQ on graphene (M = Ni, Fe, Mn)en
dc.title.alternativeRemarkably stable metal-organic frameworks on an inert substrate: M-TCNQ on graphene (M = Ni, Fe, Mn)en
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
sync.item.dbidVAV-178050en
sync.item.dbtypeVAVen
sync.item.insts2025.10.14 15:06:05en
sync.item.modts2025.10.14 10:29:36en
thesis.grantorVysoké učení technické v Brně. Fakulta strojního inženýrství. Ústav fyzikálního inženýrstvícs
thesis.grantorVysoké učení technické v Brně. Středoevropský technologický institut VUT. Molekulární nanostruktury na površíchcs
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