Formation of a Single‐Crystal Aluminum‐Based MOF Nanowire with Graphene Oxide Nanoscrolls as Structure‐Directing Agents |
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| Authors: | Mgane Muschi Anusha Lalitha Saad Sene Damien Aureau Mathieu Fregnaux Imne Esteve Lucie Rivier Naseem Ramsahye Sabine Devautour‐Vinot Clmence Sicard Nicolas Menguy Christian Serre Guillaume Maurin Nathalie Steunou |
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| Institution: | Mégane Muschi,Anusha Lalitha,Saad Sene,Damien Aureau,Mathieu Fregnaux,Imène Esteve,Lucie Rivier,Naseem Ramsahye,Sabine Devautour‐Vinot,Clémence Sicard,Nicolas Menguy,Christian Serre,Guillaume Maurin,Nathalie Steunou |
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| Abstract: | An innovative strategy is proposed to synthesize single‐crystal nanowires (NWs) of the Al3+ dicarboxylate MIL‐69(Al) MOF by using graphene oxide nanoscrolls as structure‐directing agents. MIL‐69(Al) NWs with an average diameter of 70±20 nm and lengths up to 2 μm were found to preferentially grow along the 001] crystallographic direction. Advanced characterization methods (electron diffraction, TEM, STEM‐HAADF, SEM, XPS) and molecular modeling revealed the mechanism of formation of MIL‐69(Al) NWs involving size‐confinement and templating effects. The formation of MIL‐69(Al) seeds and the self‐scroll of GO sheets followed by the anisotropic growth of MIL‐69(Al) crystals are mediated by specific GO sheets/MOF interactions. This study delivers an unprecedented approach to control the design of 1D MOF nanostructures and superstructures. |
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| Keywords: | graphene oxide metal– organic frameworks nanowires self-assembly templates |
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