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Highly Conducting Organic–Inorganic Hybrid Copper Sulfides Cu x C 6 S 6 (x=4 or 5.5): Ligand‐Based Oxidation‐Induced Chemical and Electronic Structure Modulation
Author(s) -
Huang Xing,
Qiu Yi,
Wang Yishan,
Liu Liyao,
Wu Xiaoyu,
Liang Yingying,
Cui Yutao,
Sun Yimeng,
Zou Ye,
Zhu Jia,
Fang Weihai,
Sun Junliang,
Xu Wei,
Zhu Daoben
Publication year - 2020
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.202009613
Subject(s) - stacking , copper , electrical resistivity and conductivity , redox , conductivity , ligand (biochemistry) , materials science , metal , electrical conductor , chemistry , crystallography , inorganic chemistry , topology (electrical circuits) , physics , metallurgy , organic chemistry , biochemistry , receptor , quantum mechanics , composite material , mathematics , combinatorics
Conductive coordination polymers (CPs) have potential in a wide range of applications because of their inherent structural and functional diversity. Three electrically conductive CPs (Cu x C 6 S 6 , x =3, 4 or 5.5) derived from the same organic linker (benzenehexathiol) and metal node (copper(I)) were synthesized and studied. Cu x C 6 S 6 materials are organic–inorganic hybrid copper sulfides comprising a π‐π stacking structure and cooper sulfur networks. Charge‐transport pathways within the network facilitate conductivity and offer control of the Fermi level through modulation of the oxidation level of the non‐innocent redox‐active ligand. Two Cu x C 6 S 6 ( x =4 or 5.5) CPs display high electrical conductivity and they feature a tunable structural topology and electronic structure. Cu 4 C 6 S 6 and Cu 5.5 C 6 S 6 act as degenerate semiconductors. Moreover, Cu 5.5 C 6 S 6 is a p‐type thermoelectric material with a ZT value of 0.12 at 390 K, which is a record‐breaking performance for p‐type CPs.