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Designed synthesis of stable light-emitting two-dimensional sp2 carbon-conjugated covalent organic frameworks

Author

Listed:
  • Enquan Jin

    (National University of Singapore)

  • Juan Li

    (National University of Singapore)

  • Keyu Geng

    (National University of Singapore)

  • Qiuhong Jiang

    (National University of Singapore)

  • Hong Xu

    (National University of Singapore)

  • Qing Xu

    (National University of Singapore)

  • Donglin Jiang

    (National University of Singapore)

Abstract

Covalent organic frameworks enable the topological connection of organic chromophores into π lattices, making them attractive for creating light-emitting polymers that are predesignable for both the primary- and high-order structures. However, owing to linkages, covalent organic frameworks are either unstable or poor luminescent, leaving the practical synthesis of stable light-emitting frameworks challenging. Here, we report the designed synthesis of sp2 carbon-conjugated frameworks that combine stability with light-emitting activity. The C=C linkages topologically connect pyrene knots and arylyenevinylene linkers into two-dimensional all sp2 carbon lattices that are designed to be π conjugated along both the x and y directions and develop layer structures, creating exceptionally stable frameworks. The resulting frameworks are capable of tuning band gap and emission by the linkers, are highly luminescent under various conditions and can be exfoliated to produce brilliant nanosheets. These results suggest a platform based on sp2 carbon frameworks for designing robust photofunctional materials.

Suggested Citation

  • Enquan Jin & Juan Li & Keyu Geng & Qiuhong Jiang & Hong Xu & Qing Xu & Donglin Jiang, 2018. "Designed synthesis of stable light-emitting two-dimensional sp2 carbon-conjugated covalent organic frameworks," Nature Communications, Nature, vol. 9(1), pages 1-10, December.
    • Handle: RePEc:nat:natcom:v:9:y:2018:i:1:d:10.1038_s41467-018-06719-8
    DOI: 10.1038/s41467-018-06719-8
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    Cited by:

    1. Cheng-Rong Zhang & Wei-Rong Cui & Shun-Mo Yi & Cheng-Peng Niu & Ru-Ping Liang & Jia-Xin Qi & Xiao-Juan Chen & Wei Jiang & Xin Liu & Qiu-Xia Luo & Jian-Ding Qiu, 2022. "An ionic vinylene-linked three-dimensional covalent organic framework for selective and efficient trapping of ReO4− or 99TcO4−," Nature Communications, Nature, vol. 13(1), pages 1-8, December.
    2. Maria-Anna Gatou & Panagiota Bika & Thomas Stergiopoulos & Panagiotis Dallas & Evangelia A. Pavlatou, 2021. "Recent Advances in Covalent Organic Frameworks for Heavy Metal Removal Applications," Energies, MDPI, vol. 14(11), pages 1-26, May.

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