Tailoring the Dynamics of Al Metal-Organic Framework Nanocrystals: From Rigid Nanoparticles to Flexible Nanowires

Publikation: Beitrag in FachzeitschriftForschungsartikelBeigetragenBegutachtung

Beitragende

  • Ali Saad - , Université de Versailles Saint-Quentin-en-Yvelines (Autor:in)
  • Frédéric Gobeaux - , Université Paris-Saclay (Autor:in)
  • Volodymyr Bon - , Professur für Anorganische Chemie (I) (AC1) (Autor:in)
  • Sergi Plana-Ruiz - , Universidad Rovira i Virgili (Autor:in)
  • Clémence Sicard - , Université de Versailles Saint-Quentin-en-Yvelines, Institut universitaire de France (Autor:in)
  • Mathieu Frégnaux - , Université de Versailles Saint-Quentin-en-Yvelines (Autor:in)
  • Sanchari Dasgupta - , Université de Versailles Saint-Quentin-en-Yvelines (Autor:in)
  • Subharanjan Biswas - , Université de Versailles Saint-Quentin-en-Yvelines (Autor:in)
  • Khaled Dassouki - , Université de Versailles Saint-Quentin-en-Yvelines (Autor:in)
  • Benoît Baptiste - , Sorbonne Université (Autor:in)
  • Stefano Canossa - , ETH Zürich (Autor:in)
  • Stefan Kaskel - , Professur für Anorganische Chemie (I) (AC1) (Autor:in)
  • Nicolas Menguy - , Sorbonne Université (Autor:in)
  • Nathalie Guillou - , Université de Versailles Saint-Quentin-en-Yvelines (Autor:in)
  • Nathalie Steunou - , Université de Versailles Saint-Quentin-en-Yvelines (Autor:in)

Abstract

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 in situ 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.

Details

OriginalspracheEnglisch
Seiten (von - bis)47355-47367
Seitenumfang13
FachzeitschriftACS Applied Materials and Interfaces
Jahrgang17
Ausgabenummer33
Frühes Online-DatumJuni 2025
PublikationsstatusVeröffentlicht - 20 Aug. 2025
Peer-Review-StatusJa

Schlagworte

ASJC Scopus Sachgebiete

Schlagwörter

  • flexibility, graphene oxide, metal−organic frameworks, nanowires, self-assembly