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Stitching 2D Polymeric Layers into Flexible Interpenetrated Metal–Organic Frameworks within Single Crystals

Authors

  • Zi-Xuan Zhang,

    1. Institute of Materials Research and Engineering (IMRE) Agency for Science, Technology and Research (A*STAR), 3 Research Link, 117602 Singapore (Singapore)
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  • Dr. Ni-Ni Ding,

    1. Institute of Materials Research and Engineering (IMRE) Agency for Science, Technology and Research (A*STAR), 3 Research Link, 117602 Singapore (Singapore)
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  • Dr. Wen-Hua Zhang,

    Corresponding author
    1. Institute of Materials Research and Engineering (IMRE) Agency for Science, Technology and Research (A*STAR), 3 Research Link, 117602 Singapore (Singapore)
    2. Current address: College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123 (China)
    • Institute of Materials Research and Engineering (IMRE) Agency for Science, Technology and Research (A*STAR), 3 Research Link, 117602 Singapore (Singapore)===

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    • These authors contributed equally to this work.

  • Prof. Jin-Xiang Chen,

    Corresponding author
    1. Institute of Materials Research and Engineering (IMRE) Agency for Science, Technology and Research (A*STAR), 3 Research Link, 117602 Singapore (Singapore)
    2. School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515 (P. R. China)
    • Institute of Materials Research and Engineering (IMRE) Agency for Science, Technology and Research (A*STAR), 3 Research Link, 117602 Singapore (Singapore)===

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    • These authors contributed equally to this work.

  • Prof. David J. Young,

    Corresponding author
    1. Institute of Materials Research and Engineering (IMRE) Agency for Science, Technology and Research (A*STAR), 3 Research Link, 117602 Singapore (Singapore)
    2. Department of Chemistry, Faculty of Science, Universiti Brunei Darussalam, Jalan Tungku Link, Gadong BE 1410 (Brunei Darussalam)
    • Institute of Materials Research and Engineering (IMRE) Agency for Science, Technology and Research (A*STAR), 3 Research Link, 117602 Singapore (Singapore)===

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    • These authors contributed equally to this work.

  • Prof. T. S. Andy Hor

    Corresponding author
    1. Institute of Materials Research and Engineering (IMRE) Agency for Science, Technology and Research (A*STAR), 3 Research Link, 117602 Singapore (Singapore)
    2. Department of Chemistry, National University of Singapore, 3 Science Drive 3, 117543 Singapore (Singapore)
    • Institute of Materials Research and Engineering (IMRE) Agency for Science, Technology and Research (A*STAR), 3 Research Link, 117602 Singapore (Singapore)===

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    • These authors contributed equally to this work.


  • This work was supported by IMRE assured funding (13-1C0203), the National Natural Science Foundation of China (No. 21102070), and the Program for Pearl River New Stars of Science and Technology in Guangzhou (No. 2011J2200071). J.X.C. is grateful to IMRE for financial support during her visit.

Abstract

A 2D coordination polymer prepared with bulky diethylformamide solvates exhibits channels which allow dipyridyl bridging ligands to diffuse into the crystal lattice. The absorbed dipyridyls thread through the pores of one layer and substitute the surface diethylformamide molecules on the neighboring layers to stitch alternate layers to form flexible interpenetrated metal–orgaic frameworks. The threading process also results in exchange of the bulky diethylformamide solvates for aqua to minimize congestion and, more strikingly, forces the slippage of two-dimensional layers, while still maintaining crystallinity.

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