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Achieving large-area uniform 2D metal-organic frameworks (MOFs) and controlling their electronic properties on inert surfaces is a big step toward future applications in electronic devices. Here a 2D monolayer Cu-dicyanoanthracene MOF with long-range order is successfully fabricated on an epitaxial graphene surface. Its structural and electronic properties are studied by low-temperature scanning tunneling microscopy and spectroscopy complemented by density-functional theory calculations. Access to multiple molecular charge states in the 2D MOF is demonstrated using tip-induced local electric fields. It is expected that a similar strategy could be applied to fabricate and characterize 2D MOFs with exotic, engineered electronic states.
|Number of pages||7|
|Journal||Advanced Functional Materials|
|Early online date||22 Mar 2021|
|Publication status||Published - 26 May 2021|
|MoE publication type||A1 Journal article-refereed|
- charge states
- electronic structures
- metal-organic frameworks
- scanning tunneling microscopy, tunneling spectroscopy
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