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Random-Graft Polymer-Directed Synthesis of Inorganic Mesostructures with Ultrathin Frameworks

Authors

  • Dr. Changbum Jo,

    1. Center for Nanomaterials and Chemical Reactions, Institute for Basic Science (IBS), Daejeon 305-701 (Republic of Korea)
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  • Dr. Yongbeom Seo,

    1. Center for Nanomaterials and Chemical Reactions, Institute for Basic Science (IBS), Daejeon 305-701 (Republic of Korea)
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  • Dr. Kanghee Cho,

    1. Center for Nanomaterials and Chemical Reactions, Institute for Basic Science (IBS), Daejeon 305-701 (Republic of Korea)
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  • Jaeheon Kim,

    1. Center for Nanomaterials and Chemical Reactions, Institute for Basic Science (IBS), Daejeon 305-701 (Republic of Korea)
    2. Department of Chemistry, KAIST, Daejeon 305-701 (Republic of Korea) http://rryoo.kaist.ac.kr
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  • Hye Sun Shin,

    1. Center for Nanomaterials and Chemical Reactions, Institute for Basic Science (IBS), Daejeon 305-701 (Republic of Korea)
    2. Department of Chemistry, KAIST, Daejeon 305-701 (Republic of Korea) http://rryoo.kaist.ac.kr
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  • Munhee Lee,

    1. Center for Nanomaterials and Chemical Reactions, Institute for Basic Science (IBS), Daejeon 305-701 (Republic of Korea)
    2. Department of Chemistry, KAIST, Daejeon 305-701 (Republic of Korea) http://rryoo.kaist.ac.kr
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  • Jeong-Chul Kim,

    1. Center for Nanomaterials and Chemical Reactions, Institute for Basic Science (IBS), Daejeon 305-701 (Republic of Korea)
    2. Graduate School of Nanoscience and Technology, KAIST, Daejeon 305-701 (Republic of Korea)
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  • Prof. Sang Ouk Kim,

    1. Center for Nanomaterials and Chemical Reactions, Institute for Basic Science (IBS), Daejeon 305-701 (Republic of Korea)
    2. Department of Materials Science and Engineering, KAIST, Daejeon 305-701 (Republic of Korea)
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  • Prof. Jeong Yong Lee,

    1. Center for Nanomaterials and Chemical Reactions, Institute for Basic Science (IBS), Daejeon 305-701 (Republic of Korea)
    2. Department of Materials Science and Engineering, KAIST, Daejeon 305-701 (Republic of Korea)
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  • Prof. Hyotcherl Ihee,

    1. Center for Nanomaterials and Chemical Reactions, Institute for Basic Science (IBS), Daejeon 305-701 (Republic of Korea)
    2. Department of Chemistry, KAIST, Daejeon 305-701 (Republic of Korea) http://rryoo.kaist.ac.kr
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  • Prof. Ryong Ryoo

    Corresponding author
    1. Center for Nanomaterials and Chemical Reactions, Institute for Basic Science (IBS), Daejeon 305-701 (Republic of Korea)
    2. Department of Chemistry, KAIST, Daejeon 305-701 (Republic of Korea) http://rryoo.kaist.ac.kr
    • Center for Nanomaterials and Chemical Reactions, Institute for Basic Science (IBS), Daejeon 305-701 (Republic of Korea)===

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  • This work was supported by the Institute for Basic Science (IBS) [CA1401] in Korea. We acknowledge the use of XRD beamline at Pohang Light Source (PLS). The authors are grateful to Dr. D. Ahn at PLS for helpful discussions on XRD measurement, and Dr. B. Kim at KARA for NMR. The 2D-NMR measurements were provided by J. Hwang at Bruker BioSpin Korea.

Abstract

A widely employed route for synthesizing mesostructured materials is the use of surfactant micelles or amphiphilic block copolymers as structure-directing agents. A versatile synthesis method is described for mesostructured materials composed of ultrathin inorganic frameworks using amorphous linear-chain polymers functionalized with a random distribution of side groups that can participate in inorganic crystallization. Tight binding of the side groups with inorganic species enforces strain in the polymer backbones, limiting the crystallization to the ultrathin micellar scale. This method is demonstrated for a variety of materials, such as hierarchically nanoporous zeolites, their aluminophosphate analogue, TiO2 nanosheets of sub-nanometer thickness, and mesoporous TiO2, SnO2, and ZrO2. This polymer-directed synthesis is expected to widen our accessibility to unexplored mesostructured materials in a simple and mass-producible manner.

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