A coronene-based semiconducting two-dimensional metal-organic framework with ferromagnetic behavior

Renhao Dong, Zhitao Zhang, Diana C. Tranca, Shengqiang Zhou, Mingchao Wang, Peter Adler, Zhongquan Liao, Feng Liu, Yan Sun, Wujun Shi, Zhe Zhang, Ehrenfried Zschech, Stefan C. B. Mannsfeld, Claudia Felser and Xinliang Feng ()
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Renhao Dong: Technische Universität Dresden
Zhitao Zhang: Institute of Ion Beam Physics and Materials Research
Diana C. Tranca: Technische Universität Dresden
Shengqiang Zhou: Institute of Ion Beam Physics and Materials Research
Mingchao Wang: Technische Universität Dresden
Peter Adler: Max Planck Institute for Chemical Physics of Solids
Zhongquan Liao: Fraunhofer Institute for Ceramic Technologies and Systems (IKTS)
Feng Liu: Xi’an Jiaotong University
Yan Sun: Max Planck Institute for Chemical Physics of Solids
Wujun Shi: Max Planck Institute for Chemical Physics of Solids
Zhe Zhang: Technische Universität Dresden
Ehrenfried Zschech: Fraunhofer Institute for Ceramic Technologies and Systems (IKTS)
Stefan C. B. Mannsfeld: Technische Universität Dresden
Claudia Felser: Max Planck Institute for Chemical Physics of Solids
Xinliang Feng: Technische Universität Dresden

Nature Communications, 2018, vol. 9, issue 1, 1-9

Abstract: Abstract Metal–organic frameworks (MOFs) have so far been highlighted for their potential roles in catalysis, gas storage and separation. However, the realization of high electrical conductivity (>10−3 S cm−1) and magnetic ordering in MOFs will afford them new functions for spintronics, which remains relatively unexplored. Here, we demonstrate the synthesis of a two-dimensional MOF by solvothermal methods using perthiolated coronene as a ligand and planar iron-bis(dithiolene) as linkages enabling a full π-d conjugation. This 2D MOF exhibits a high electrical conductivity of ~10 S cm−1 at 300 K, which decreases upon cooling, suggesting a typical semiconductor nature. Magnetization and 57Fe Mössbauer experiments reveal the evolution of ferromagnetism within nanoscale magnetic clusters below 20 K, thus evidencing exchange interactions between the intermediate spin S = 3/2 iron(III) centers via the delocalized π electrons. Our results illustrate that conjugated 2D MOFs have potential as ferromagnetic semiconductors for application in spintronics.

Date: 2018
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DOI: 10.1038/s41467-018-05141-4

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