Structural insights into hybrid immiscible blends of metal-organic framework and sodium ultraphosphate glasses

Recently, increased attention has been focused on amorphous metal-organic frameworks (MOFs) and, more specifically, MOF glasses, the first new glass category discovered since the 1970s. In this work, we explore the fabrication of a compositional series of hybrid blends, the first example of blending...

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Bibliographic Details
Published in:Chemical science (Cambridge) 2023-11, Vol.14 (42), p.11737-11748
Main Authors: Chester, Ashleigh M, Castillo-Blas, Celia, Sajzew, Roman, Rodrigues, Bruno P, Mas-Balleste, Ruben, Moya, Alicia, Snelson, Jessica E, Collins, Sean M, Sapnik, Adam F, Robertson, Georgina P, Irving, Daniel J. M, Wondraczek, Lothar, Keen, David A, Bennett, Thomas D
Format: Article
Language:English
Subjects:
Chemistry
Distribution functions
Function analysis
Glass
Mechanical properties
Metal-organic frameworks
Miscibility
Mixtures
Nanoindentation
NMR spectroscopy
Scanning transmission electron microscopy
Spectrum analysis
Thermal analysis
Thermal stability
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Summary:Recently, increased attention has been focused on amorphous metal-organic frameworks (MOFs) and, more specifically, MOF glasses, the first new glass category discovered since the 1970s. In this work, we explore the fabrication of a compositional series of hybrid blends, the first example of blending a MOF and inorganic glass. We combine ZIF-62(Zn) glass and an inorganic glass, 30Na 2 O-70P 2 O 5 , to combine the chemical versatility of the MOF glass with the mechanical properties of the inorganic glass. We investigate the interfacial interactions between the two components using pair distribution function analysis and solid state NMR spectroscopy, and suggest potential interactions between the two phases. Thermal analysis of the blend samples indicated that they were less thermally stable than the starting materials and had a T g shifted relative to the pristine materials. Annular dark field scanning transmission electron microscopy tomography, X-ray energy dispersive spectroscopy (EDS), nanoindentation and 31 P NMR all indicated close mixing of the two phases, suggesting the formation of immiscible blends. The characterisation of hybrid blends comprising a metal-organic framework (MOF) glass and a phosphate glass is explored. The mechanical and thermal properties of the blends are studied and interfacial interactions between the phases are analysed.
ISSN:2041-6520
2041-6539
DOI:10.1039/d3sc02305b