Tailoring the Dynamics of Al Metal–Organic Framework Nanocrystals: From Rigid Nanoparticles to Flexible Nanowires
Here we describe the synthesis of a series of 1D anisotropic Al metal-organic framework (i.e., DUT-5(Al)) nanostructures differing in their crystal dimensions and aspect ratios. By using graphene oxide (GO) nanoscrolls as structure-directing agents, we synthesized monodisperse DUT-5(Al) nanowires (NWs) that are >6 μm in length. Shorter DUT-5(Al) nanorods (∼50 nm) and polydisperse samples with broader size distributions were prepared without GO. Remarkably, these nanostructures also differed by their dynamic properties upon the adsorption of guest molecules. While DUT-5(Al) nanorods exhibited a rigid large pore (lp) phase, it was revealed that DUT-5(Al) NWs could present a gating behavior characterized by a structural transition from a disordered narrow pore (np) phase to the lp phase upon adsorption. The structure of DUT-5(Al) NWs and their guest-responsive structural flexibility were fully characterized by coupling high-resolution TEM, 3D electron diffraction, high-resolution synchrotron PXRD and PDF, adsorption isotherms, and <i>in situ</i> PXRD. To the best of our knowledge, this study delivers an unprecedented design of flexible DUT-5(Al) NWs, revising the conventional view of this MOF as a rigid porous material. Moreover, this demonstrates that tuning the aspect ratio of MOF particles can influence their structural flexibility.
Authors
- Nicolas Menguy (ORCID: https://orcid.org/0000-0003-4613-2490)
- Stefano Canossa (ORCID: https://orcid.org/0000-0002-6817-0810)
- Mathieu Frégnaux (ORCID: https://orcid.org/0000-0002-3915-3982)
- Subharanjan Biswas (ORCID: https://orcid.org/0000-0002-1608-4240)
- Sanchari Dasgupta (ORCID: https://orcid.org/0000-0003-4997-5258)
- Stefan Kaskel (ORCID: https://orcid.org/0000-0003-4572-0303)
- Benoı̂t Baptiste (ORCID: https://orcid.org/0000-0002-3762-0663)
- Khaled Dassouki (ORCID: https://orcid.org/0009-0003-0710-6895)
- Volodymyr Bon (ORCID: https://orcid.org/0000-0002-9851-5031)
- Clémence Sicard (ORCID: https://orcid.org/0000-0002-3312-9025)
- Sergi Plana‐Ruiz (ORCID: https://orcid.org/0000-0002-4047-8362)
- Nathalie Steunou (ORCID: https://orcid.org/0000-0002-7049-7388)
- Frédéric Gobeaux (ORCID: https://orcid.org/0000-0003-4410-2378)
- Nathalie Guillou (ORCID: https://orcid.org/0009-0003-4373-4063)
- Ali Saad (ORCID: https://orcid.org/0000-0003-0055-2043)
Institutions
- Centre National de la Recherche Scientifique (FR)
- Institut Universitaire de France (FR)
- Université de Versailles Saint-Quentin-en-Yvelines (FR)
- Commissariat à l'Énergie Atomique et aux Énergies Alternatives (FR)
- Université Paris-Saclay (FR)
- ETH Zurich (CH)
- Sorbonne Université (FR)
- CEA Paris-Saclay (FR)
- Institut de minéralogie, de physique des matériaux et de cosmochimie (FR)
- Institut Lavoisier de Versailles (FR)
- Institut de Recherche pour le Développement (FR)
- Universitat Rovira i Virgili (ES)
- Technische Universität Dresden (DE)
Publication Details
- Journal
- ACS Applied Materials & Interfaces
- Published
- 2025-06-16
- DOI
- https://doi.org/10.1021/acsami.5c04998
- Citations
- 2
- Primary Topic
- Metal-Organic Frameworks: Synthesis and Applications
- Type
- article
- Field-Weighted Citation Impact
- 1.07
Funders
- Université Paris-Saclay