Synthesis and Local Probe Gating of a Monolayer Metal-Organic Framework

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Abstract

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.

Original languageEnglish
Article number2100519
Pages (from-to)2100519
Number of pages7
JournalAdvanced Functional Materials
Volume31
Issue number22
Early online date22 Mar 2021
DOIs
Publication statusPublished - 26 May 2021
MoE publication typeA1 Journal article-refereed

Keywords

  • charge states
  • electronic structures
  • metal-organic frameworks
  • scanning tunneling microscopy, tunneling spectroscopy

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