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Electric transport properties of surface-anchored metal-organic frameworks and the effect of ferrocene loading

Understanding of the electric transport through surface-anchored metal-organic frameworks (SURMOFs) is important both from a fundamental perspective as well as with regards to possible future applications in electronic devices. To address this mostly unexplored subject, we integrated a series of rep...

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Main Authors: Liu, Jianxi (Author) , Wächter, Tobias (Author) , Irmler, Andreas (Author) , Weidler, Peter G. (Author) , Gliemann, Hartmut (Author) , Pauly, Fabian (Author) , Mugnaini, Veronica (Author) , Zharnikov, Michael (Author) , Wöll, Christof (Author)
Format: Article (Journal)
Language:English
Published: April 15, 2015
In: ACS applied materials & interfaces
Year: 2015, Volume: 7, Issue: 18, Pages: 9824-9830
ISSN:1944-8252
DOI:10.1021/acsami.5b01792
Online Access:Resolving-System, lizenzpflichtig, Volltext: https://doi.org/10.1021/acsami.5b01792
Verlag, lizenzpflichtig, Volltext: https://pubs.acs.org/doi/10.1021/acsami.5b01792
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Author Notes:Jianxi Liu, Tobias Wächter, Andreas Irmler, Peter G. Weidler, Hartmut Gliemann, Fabian Pauly, Veronica Mugnaini, Michael Zharnikov, and Christof Wöll
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Summary:Understanding of the electric transport through surface-anchored metal-organic frameworks (SURMOFs) is important both from a fundamental perspective as well as with regards to possible future applications in electronic devices. To address this mostly unexplored subject, we integrated a series of representative SURMOF thin films, formed by copper nodes and trimesic acid and known as HKUST-1, in a mercury-drop-based tunneling junction. Although the transport properties of these SURMOFs are analogous to those of hybrid metal-organic molecular wires, manifested by a very low value of the tunneling decay constant (β ≈ 0.006 Å-1), they are at the same time found to be consistent with a linear increase of resistance with film thickness. Upon loading of SURMOF pores with ferrocene (Fc), a noticeable increase in transport current was observed. A transport model and ab initio electronic structure calculations were used to reveal a hopping transport mechanism and to relate the changes upon Fc loading to those of the electronic and vibrational structures of the SURMOF films.
Item Description:Gesehen am 26.06.2020
Physical Description:Online Resource
ISSN:1944-8252
DOI:10.1021/acsami.5b01792

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