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Formation of a Single‐Crystal Aluminum‐Based MOF Nanowire with Graphene Oxide Nanoscrolls as Structure‐Directing Agents

Abstract : Here we propose an innovative strategy to synthesize single-crystal nanowires (NWs) of the Al 3+ 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 m were found to preferentially grow along the [001] crystallographic direction. Advanced characterization tools (electron diffraction, TEM, STEM-HAADF, SEM, XPS) and molecular modelling 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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https://hal.archives-ouvertes.fr/hal-03080047
Contributor : Christian Serre <>
Submitted on : Monday, December 21, 2020 - 5:25:08 PM
Last modification on : Tuesday, February 9, 2021 - 11:24:48 AM

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Mégane Muschi, Anusha Lalitha, Saad Sene, Damien Aureau, Mathieu Frégnaux, et al.. Formation of a Single‐Crystal Aluminum‐Based MOF Nanowire with Graphene Oxide Nanoscrolls as Structure‐Directing Agents. Angewandte Chemie International Edition, Wiley-VCH Verlag, 2020, 59 (26), pp.10353-10358. ⟨10.1002/anie.202000795⟩. ⟨hal-03080047⟩

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