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Confining H3PO4 network in covalent organic frameworks enables proton super flow

Author

Listed:
  • Shanshan Tao

    (National University of Singapore)

  • Lipeng Zhai

    (National University of Singapore)

  • A. D. Dinga Wonanke

    (Nottingham Trent University)

  • Matthew A. Addicoat

    (Nottingham Trent University)

  • Qiuhong Jiang

    (National University of Singapore)

  • Donglin Jiang

    (National University of Singapore
    Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University)

Abstract

Development of porous materials combining stability and high performance has remained a challenge. This is particularly true for proton-transporting materials essential for applications in sensing, catalysis and energy conversion and storage. Here we report the topology guided synthesis of an imine-bonded (C=N) dually stable covalent organic framework to construct dense yet aligned one-dimensional nanochannels, in which the linkers induce hyperconjugation and inductive effects to stabilize the pore structure and the nitrogen sites on pore walls confine and stabilize the H3PO4 network in the channels via hydrogen-bonding interactions. The resulting materials enable proton super flow to enhance rates by 2–8 orders of magnitude compared to other analogues. Temperature profile and molecular dynamics reveal proton hopping at low activation and reorganization energies with greatly enhanced mobility.

Suggested Citation

  • Shanshan Tao & Lipeng Zhai & A. D. Dinga Wonanke & Matthew A. Addicoat & Qiuhong Jiang & Donglin Jiang, 2020. "Confining H3PO4 network in covalent organic frameworks enables proton super flow," Nature Communications, Nature, vol. 11(1), pages 1-8, December.
    • Handle: RePEc:nat:natcom:v:11:y:2020:i:1:d:10.1038_s41467-020-15918-1
    DOI: 10.1038/s41467-020-15918-1
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