Issue 7, 2022

Facile synthesis, precise species control and chemical transformation of highly conducting organic metal chalcogenides CuxBHT (BHT = benzenehexathiol; x = 3, 4, and 5.5)

Abstract

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.

Graphical abstract: Facile synthesis, precise species control and chemical transformation of highly conducting organic metal chalcogenides CuxBHT (BHT = benzenehexathiol; x = 3, 4, and 5.5)

Supplementary files

Article information

Article type
Paper
Submitted
03 août 2021
Accepted
20 sept. 2021
First published
23 sept. 2021

J. Mater. Chem. C, 2022,10, 2711-2717

Facile synthesis, precise species control and chemical transformation of highly conducting organic metal chalcogenides CuxBHT (BHT = benzenehexathiol; x = 3, 4, and 5.5)

Y. Jin, Y. Li, Y. Sun, M. Zhu, Z. Li, L. Liu, Y. Zou, C. Liu, Y. Sun and W. Xu, J. Mater. Chem. C, 2022, 10, 2711 DOI: 10.1039/D1TC03614A

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