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Synthesis of a Thiol Building Block for the Crystallization of a Semiconducting Gyroidal Metal-sulfur Framework
Published on: April 9, 2018
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A coronene-based semiconducting two-dimensional metal-organic framework with ferromagnetic behavior.
Renhao Dong1, Zhitao Zhang2, Diana C Tranca1
1Department of Chemistry and Food Chemistry & Center for Advancing Electronics Dresden, Technische Universität Dresden, 01062, Dresden, Germany.
Nature Communications
|July 8, 2018
Summary
This study introduces a novel 2D metal-organic framework (MOF) with high electrical conductivity and ferromagnetism, paving the way for spintronic applications.
Area of Science:
- Materials Science
- Condensed Matter Physics
- Chemistry
Background:
- Metal-organic frameworks (MOFs) are recognized for catalysis and gas storage.
- High electrical conductivity and magnetic ordering in MOFs are underexplored for spintronics.
Purpose of the Study:
- To synthesize a 2D MOF with enhanced electrical and magnetic properties.
- To explore the potential of conjugated 2D MOFs for spintronic applications.
Main Methods:
- Solvothermal synthesis using perthiolated coronene and iron-bis(dithiolene) ligands.
- Electrical conductivity measurements at various temperatures.
- Magnetization and 57Fe Mössbauer spectroscopy.
Main Results:
- A 2D MOF with ~10 S/cm electrical conductivity at 300 K was synthesized.
- The MOF exhibits semiconductor behavior, with conductivity decreasing upon cooling.
- Ferromagnetism was observed below 20 K, indicating exchange interactions via delocalized π electrons.
Conclusions:
- Conjugated 2D MOFs can achieve high electrical conductivity and ferromagnetism.
- These materials show promise as ferromagnetic semiconductors for spintronics.
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