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Hydrophobization of metal-organic frameworks (MOFs) is important to push forward their practical use and thus has attracted increasing interest. In contrast to the previous reports, which mainly focused on the modification of organic ligands in MOFs, herein, we reported a novel strategy to decorate the metal-oxo nodes of MOFs with phenylsilane to afford super-hydrophobic NH -UiO-66(Zr), which shows highly improved base resistance and holds great promise in versatile applications, such as organic/water separation, self-cleaning, and liquid-marble fabrication. This work demonstrates the first attempt at metal-oxo node modification for super-hydrophobic MOFs, advancing a new concept in the design of MOFs with controlled wettability for practical applications.
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http://dx.doi.org/10.1002/anie.201902961 | DOI Listing |
Angew Chem Int Ed Engl
July 2025
Department of Chemistry, Stony Brook University, Stony Brook, New York, 11794, USA.
Metal-organic frameworks (MOFs) are emerging as unconventional precursors for nanoparticle synthesis, with potential to leverage their tunable structures and chemistry to achieve nanomaterials with structures and compositions inaccessible via traditional synthetic routes. Here, we use in situ synchrotron X-ray diffraction and pair distribution function (PDF) measurements to investigate how the dynamic structure of MOFs at the edge of stability influences their transformation into different metastable polymorphs. Our study reveals that the local structural features of metal-oxo MOF nodes at elevated temperatures are linked to the resulting nanoparticle structures formed under mild conditions.
View Article and Find Full Text PDFChemistry
October 2024
College of Material Science and Engineering, Anhui University of Science and Technology, 232001, Huainan, China.
Two water-stable indium metal-organic frameworks, (NHMe)[In(BTB)] ⋅ 12DMA ⋅ 4.5HO (In-MOF-1) and (NHMe)[InO(BTB)(HO)(DMSO)] ⋅ 27DMSO ⋅ 21HO (In-MOF-2) (BTB=4,4',4''-benzene-1,3,5-tribenzoate) with 3D interpenetrated structure has been constructed by regulating solvents. Structure analysis revealed that In-MOF-1 has a three-dimensional (3D) structure with a single metal core, while In-MOF-2 features an octahedron cage constructed by three kinds of metal clusters to further form a 3D structure.
View Article and Find Full Text PDFJ Phys Chem C Nanomater Interfaces
May 2024
Department of Chemical Engineering, University of California, Davis, Davis, California 95616, United States.
Among the important properties of metal-organic frameworks (MOFs) is stability, which may limit applications, for example, in separations and catalysis. Many MOFs consist of metal oxo cluster nodes connected by carboxylate linkers. Addressing MOF stability, we highlight connections between metal oxo cluster chemistry and MOF node chemistry, including results characterizing Keggin ions and biological clusters.
View Article and Find Full Text PDFChem Sci
October 2023
Department of Chemistry and Biochemistry, Material Science Institute, University of Oregon Eugene OR 97403 USA
Tailoring the molecular components of hybrid organic-inorganic materials enables precise control over their electronic properties. Designing electrically conductive coordination materials, metal-organic frameworks (MOFs), has relied on single-metal nodes because the metal-oxo clusters present in the vast majority of MOFs are not suitable for electrical conduction due to their localized electron orbitals. Therefore, the development of metal-cluster nodes with delocalized bonding would greatly expand the structural and electrochemical tunability of conductive materials.
View Article and Find Full Text PDFJ Am Chem Soc
November 2023
The Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States.
Heterogeneous catalysis plays an indispensable role in chemical production and energy conversion. Incorporation of transition metals into metal oxides and zeolites is a common strategy to fine-tune the activity and selectivity of the resulting solid catalysts, as either the active center or promotor. Studying the underlying mechanism is however challenging.
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