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Flexible single-layer ionic organic–inorganic frameworks towards precise nano-size separation

Author

Listed:
  • Liang Yue

    (State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University)

  • Shan Wang

    (State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University)

  • Ding Zhou

    (State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University)

  • Hao Zhang

    (State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University)

  • Bao Li

    (State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University)

  • Lixin Wu

    (State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University
    Key Laboratory of Natural Resources of Changbai Mountain and Functional Molecules, Yanbian University)

Abstract

Consecutive two-dimensional frameworks comprised of molecular or cluster building blocks in large area represent ideal candidates for membranes sieving molecules and nano-objects, but challenges still remain in methodology and practical preparation. Here we exploit a new strategy to build soft single-layer ionic organic–inorganic frameworks via electrostatic interaction without preferential binding direction in water. Upon consideration of steric effect and additional interaction, polyanionic clusters as connection nodes and cationic pseudorotaxanes acting as bridging monomers connect with each other to form a single-layer ionic self-assembled framework with 1.4 nm layer thickness. Such soft supramolecular polymer frameworks possess uniform and adjustable ortho-tetragonal nanoporous structure in pore size of 3.4–4.1 nm and exhibit greatly convenient solution processability. The stable membranes maintaining uniform porous structure demonstrate precisely size-selective separation of semiconductor quantum dots within 0.1 nm of accuracy and may hold promise for practical applications in selective transport, molecular separation and dialysis systems.

Suggested Citation

  • Liang Yue & Shan Wang & Ding Zhou & Hao Zhang & Bao Li & Lixin Wu, 2016. "Flexible single-layer ionic organic–inorganic frameworks towards precise nano-size separation," Nature Communications, Nature, vol. 7(1), pages 1-10, April.
    • Handle: RePEc:nat:natcom:v:7:y:2016:i:1:d:10.1038_ncomms10742
    DOI: 10.1038/ncomms10742
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    Cited by:

    1. Minghui Tan & Pan Tian & Qian Zhang & Guiqiang Zhu & Yuchen Liu & Mengjiao Cheng & Feng Shi, 2022. "Self-sorting in macroscopic supramolecular self-assembly via additive effects of capillary and magnetic forces," Nature Communications, Nature, vol. 13(1), pages 1-9, December.
    2. Guohua Zhang & Xinyue Li & Gang Chen & Yue Zhang & Mingfeng Wei & Xiaofei Chen & Bao Li & Yuqing Wu & Lixin Wu, 2023. "Supramolecular framework membrane for precise sieving of small molecules, nanoparticles and proteins," Nature Communications, Nature, vol. 14(1), pages 1-12, December.

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