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A highly soluble, crystalline covalent organic framework compatible with device implementation

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Abstract

Covalent organic frameworks (COFs) have emerged as a tailor-made platform for designing next-generation two-dimensional materials. However, COFs are produced as insoluble and unprocessable solids, which precludes the preparation of thin films for optoelectronic applications. Here, we report designed synthesis of a highly soluble yet crystalline COF material through the regulation of its inter-layer interactions. The resulting COF is remarkably soluble in a variety of organic solvents and forms stable true solutions with retention of its layered structure. These unique features endow the COF with solution processability; high-quality, large-area COF films can be produced on various substrates in a high-throughput and efficient manner, with good control over the film thickness, making this material compatible with a variety of device applications. The films are electrically anisotropic; the intra-layer carrier conduction is inhibited, while the inter-layer carrier migration is outstanding, showing the highest conductivity among all reported COF materials. Our highly soluble and processable COF may open new pathways for realising high-performance COF-based optoelectronic devices with diverse functions.

Graphical abstract: A highly soluble, crystalline covalent organic framework compatible with device implementation

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Publication details

The article was received on 25 Sep 2018, accepted on 22 Oct 2018 and first published on 23 Oct 2018


Article type: Edge Article
DOI: 10.1039/C8SC04255A
Citation: Chem. Sci., 2019, Advance Article
  • Open access: Creative Commons BY-NC license
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    A highly soluble, crystalline covalent organic framework compatible with device implementation

    L. Wang, C. Zeng, H. Xu, P. Yin, D. Chen, J. Deng, M. Li, N. Zheng, C. Gu and Y. Ma, Chem. Sci., 2019, Advance Article , DOI: 10.1039/C8SC04255A

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