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Formation of a Single‐Crystal Aluminum‐Based MOF Nanowire with Graphene Oxide Nanoscrolls as Structure‐Directing Agents
Author(s) -
Muschi Mégane,
Lalitha Anusha,
Sene Saad,
Aureau Damien,
Fregnaux Mathieu,
Esteve Imène,
Rivier Lucie,
Ramsahye Naseem,
DevautourVinot Sabine,
Sicard Clémence,
Menguy Nicolas,
Serre Christian,
Maurin Guillaume,
Steunou Nathalie
Publication year - 2020
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.202000795
Subject(s) - graphene , materials science , nanowire , nanotechnology , x ray photoelectron spectroscopy , oxide , nanostructure , chemical engineering , anodic aluminum oxide , crystallography , chemistry , fabrication , metallurgy , engineering , medicine , alternative medicine , pathology
An innovative strategy is proposed 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 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.