Journal
JOURNAL OF MATERIALS CHEMISTRY C
Volume 10, Issue 7, Pages 2711-2717Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/d1tc03614a
Keywords
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Funding
- National Key R&D Program of China [2017YFA0204701]
- National Natural Science Foundation of China [22071256]
- Chinese Academy of Sciences [QYZDY-SSW-SLH024]
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This study reports a facile and controllable synthetic approach for the preparation of highly crystalline BHT-based OMCs using Cu2O as a precursor. A series of highly conducting organic metal chalcogenides were precisely constructed through variation of the molar ratio between Cu2O and BHT, with a fascinating chemical transformation phenomenon discovered in conducting OMCs.
The design of conducting organic metal chalcogenides (OMCs) has attracted extensive attention for their applications in diverse areas. However, only a handful of OMCs exhibit appealing electrical transport properties due to the limited synthetic approaches. Herein, a facile and controllable synthetic approach for the preparation of highly crystalline benzenehexathiol (BHT)-based OMCs using Cu2O as a precursor is reported. Under heterogeneous conditions, a series of highly conducting organic metal chalcogenides CuxBHT (x = 3, 4, and 5.5) were precisely constructed via variation of the molar ratio between Cu2O and BHT. In particular, a fascinating chemical transformation phenomenon was discovered in this work. This is the first time that a phase transition has been observed in conducting OMCs, with the semiconducting species (Cu4BHT and Cu5.5BHT) being converted to metallic species (Cu3BHT) under delicate oxidation regulation. This work provides a prominent paradigm for constructing highly crystalline OMCs, and opens up the possibility of developing OMCs with different structural topologies through chemical transformation.
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