A Controllable Gate Effect in Cobalt(II) Organic Frameworks by Reversible Structure Transformations

Authors

  • Qiang Chen,

    1. Department of Chemistry, TKL of Metal- and Molecule-based Material Chemistry and Synergetic Innovation Center of Chemical Science and Engineering (Tianjin), Nankai University, Tianjin 300071 (China)
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  • Dr. Ze Chang,

    1. Department of Chemistry, TKL of Metal- and Molecule-based Material Chemistry and Synergetic Innovation Center of Chemical Science and Engineering (Tianjin), Nankai University, Tianjin 300071 (China)
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  • Dr. Wei-Chao Song,

    1. Department of Chemistry, TKL of Metal- and Molecule-based Material Chemistry and Synergetic Innovation Center of Chemical Science and Engineering (Tianjin), Nankai University, Tianjin 300071 (China)
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  • Han Song,

    1. Department of Chemistry, TKL of Metal- and Molecule-based Material Chemistry and Synergetic Innovation Center of Chemical Science and Engineering (Tianjin), Nankai University, Tianjin 300071 (China)
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  • Dr. Hai-Bin Song,

    1. State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin 300071 (China)
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  • Dr. Tong-Liang Hu,

    1. Department of Chemistry, TKL of Metal- and Molecule-based Material Chemistry and Synergetic Innovation Center of Chemical Science and Engineering (Tianjin), Nankai University, Tianjin 300071 (China)
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  • Prof. Dr. Xian-He Bu

    Corresponding author
    1. Department of Chemistry, TKL of Metal- and Molecule-based Material Chemistry and Synergetic Innovation Center of Chemical Science and Engineering (Tianjin), Nankai University, Tianjin 300071 (China)
    • Department of Chemistry, TKL of Metal- and Molecule-based Material Chemistry and Synergetic Innovation Center of Chemical Science and Engineering (Tianjin), Nankai University, Tianjin 300071 (China)

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  • We thank Prof. Jian-Rong Li (Beijing University of Technology), Prof. Michael J. Zaworotko (University of South Florida), and Prof. Wei-Xiong Zhang (Sun Yat-sen University) for the helpful discussions, Dr. Andrey A. Yakovenko (Brookhaven National Laboratory) for the powder refinements, and Hong-Jian Song (Nankai University) for the measurement of NMR spectra. This work was financially supported by the 973 program (2012CB821700), NNSF of China (21031002, 21290171, and 51073079).

Abstract

original image

With H2O or NH3 stimuli, the blue cobalt-based metal–organic framework (MOF) BP can reversibly transform to red RP. The removal/recovery of terephthalate ligands accompanied by the transformation leads to a gate effect, which allows the encapsulation and release of small solvent molecules under certain conditions. This is the first example of topology transformation from a self-penetrating to interpenetrating net in 3D MOFs.

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