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Continuous negative-to-positive tuning of thermal expansion achieved by controlled gas sorption in porous coordination frameworks

Author

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  • Josie E. Auckett

    (Australian Nuclear Science and Technology Organisation)

  • Arnold A. Barkhordarian

    (The University of Sydney)

  • Stephen H. Ogilvie

    (The University of Sydney)

  • Samuel G. Duyker

    (The University of Sydney)

  • Hubert Chevreau

    (Australian Nuclear Science and Technology Organisation)

  • Vanessa K. Peterson

    (Australian Nuclear Science and Technology Organisation)

  • Cameron J. Kepert

    (The University of Sydney)

Abstract

Control of the thermomechanical properties of functional materials is of great fundamental and technological significance, with the achievement of zero or negative thermal expansion behavior being a key goal for various applications. A dynamic, reversible mode of control is demonstrated for the first time in two Prussian blue derivative frameworks whose coefficients of thermal expansion are tuned continuously from negative to positive values by varying the concentration of adsorbed CO2. A simple empirical model that captures site-specific guest contributions to the framework expansion is derived, and displays excellent agreement with the observed lattice behaviour.

Suggested Citation

  • Josie E. Auckett & Arnold A. Barkhordarian & Stephen H. Ogilvie & Samuel G. Duyker & Hubert Chevreau & Vanessa K. Peterson & Cameron J. Kepert, 2018. "Continuous negative-to-positive tuning of thermal expansion achieved by controlled gas sorption in porous coordination frameworks," Nature Communications, Nature, vol. 9(1), pages 1-5, December.
    • Handle: RePEc:nat:natcom:v:9:y:2018:i:1:d:10.1038_s41467-018-06850-6
    DOI: 10.1038/s41467-018-06850-6
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