Electric Transport Properties of Surface-Anchored Metal-Organic Frameworks and the Effect of Ferrocene Loading

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2015
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Liu, Jianxi
Wächter, Tobias
Weidler, Peter G.
Gliemann, Hartmut
Mugnaini, Veronica
Zharnikov, Michael
Wöll, Christof
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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.

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ISO 690LIU, Jianxi, Tobias WÄCHTER, Andreas IRMLER, Peter G. WEIDLER, Hartmut GLIEMANN, Fabian PAULY, Veronica MUGNAINI, Michael ZHARNIKOV, Christof WÖLL, 2015. Electric Transport Properties of Surface-Anchored Metal-Organic Frameworks and the Effect of Ferrocene Loading. In: ACS Applied Materials & Interfaces. 2015, 7(18), pp. 9824-9830. ISSN 1944-8244. eISSN 1944-8252. Available under: doi: 10.1021/acsami.5b01792
BibTex
@article{Liu2015Elect-30995,
  year={2015},
  doi={10.1021/acsami.5b01792},
  title={Electric Transport Properties of Surface-Anchored Metal-Organic Frameworks and the Effect of Ferrocene Loading},
  number={18},
  volume={7},
  issn={1944-8244},
  journal={ACS Applied Materials & Interfaces},
  pages={9824--9830},
  author={Liu, Jianxi and Wächter, Tobias and Irmler, Andreas and Weidler, Peter G. and Gliemann, Hartmut and Pauly, Fabian and Mugnaini, Veronica and Zharnikov, Michael and Wöll, Christof}
}
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