A two-dimensional π–d conjugated coordination polymer with extremely high electrical conductivity and ambipolar transport behaviour

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作者
Xing Huang
Peng Sheng
Zeyi Tu
Fengjiao Zhang
Junhua Wang
Hua Geng
Ye Zou
Chong-an Di
Yuanping Yi
Yimeng Sun
Wei Xu
Daoben Zhu
机构
[1] Beijing National Laboratory for Molecular Sciences,
[2] Key Laboratory of Organic Solids,undefined
[3] Institute of Chemistry,undefined
[4] Chinese Academy of Sciences,undefined
[5] The Daniel Chee Tsui Laboratory,undefined
[6] Institute of Physics,undefined
[7] Chinese Academy of Sciences,undefined
来源
Nature Communications | / 6卷
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摘要
Currently, studies on organic two-dimensional (2D) materials with special optic-electronic properties are attracting great research interest. However, 2D organic systems possessing promising electrical transport properties are still rare. Here a highly crystalline thin film of a copper coordination polymer, Cu-BHT (BHT=benzenehexathiol), is prepared via a liquid–liquid interface reaction between BHT/dichloromethane and copper(II) nitrate/H2O. The morphology and structure characterization reveal that this film is piled up by nanosheets of 2D lattice of [Cu3(C6S6)]n, which is further verified by quantum simulation. Four-probe measurements show that the room temperature conductivity of this material can reach up to 1,580 S cm−1, which is the highest value ever reported for coordination polymers. Meanwhile, it displays ambipolar charge transport behaviour and extremely high electron and hole mobilities (99 cm2V−1s−1 for holes and 116 cm2V−1s−1 for electrons) under field-effect modulation.
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