Random‐Graft Polymer‐Directed Synthesis of Inorganic Mesostructures with Ultrathin Frameworks |
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Authors: | Dr Changbum Jo Dr Yongbeom Seo Dr Kanghee Cho Jaeheon Kim Hye Sun Shin Munhee Lee Jeong‐Chul Kim Prof Sang Ouk Kim Prof Jeong Yong Lee Prof Hyotcherl Ihee Prof Ryong Ryoo |
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Institution: | 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;3. Graduate School of Nanoscience and Technology, KAIST, Daejeon 305‐701 (Republic of Korea);4. Department of Materials Science and Engineering, KAIST, Daejeon 305‐701 (Republic of Korea) |
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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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Keywords: | mesostructures nanosheets nanosponges polymers structure directing agents |
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