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Meltable, Glass-Forming, Iron Zeolitic Imidazolate Frameworks

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Valencià Castellano

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IMPORTANT: Aquest repositori està en una versió antiga des del 3/12/2023. La nova instal.lació está en https://roderic.uv.es/

Meltable, Glass-Forming, Iron Zeolitic Imidazolate Frameworks

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León-Alcaide, Luis; Christensen, Rasmus S.; Keen, David A.; Jordá, José L.; Brotons-Alcazar, Isaac; Forment Aliaga, Alicia; Mínguez Espallargas, Guillermo

Aquest document és un/a article, creat/da en: 2023

We describe the first meltable iron-based zeolitic imidazolate framework (ZIF), denoted MUV-24. This material, elusive from direct synthesis, is obtained from the thermal treatment of [Fe3(im)6(Him)2], which yields Fe(im)2 upon loss of the neutral imidazole molecules. Different crystalline phase transformations are observed upon further heating, until the material melts at 482 °C. Vitrification upon cooling of the liquid phase gives rise to the first Fe-metal-organic framework glass. X-ray total scattering experiments show that the tetrahedral environment of the crystalline solids is maintained in the glass, whereas nanoindentation measurements reveal an increase in Young's modulus, in agreement with stiffening upon vitrification.

León-Alcaide, Luis Christensen, Rasmus S. Keen, David A. Jordá, José L. Brotons-Alcazar, Isaac Forment Aliaga, Alicia Mínguez Espallargas, Guillermo 2023 Meltable, Glass-Forming, Iron Zeolitic Imidazolate Frameworks Journal of the American Chemical Society 145 11258 11264