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

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  • Ashleigh M. Chester
  • Celia Castillo-Blas
  • Roman Sajzew
  • Bruno P. Rodrigues
  • Ruben Mas-Balleste
  • Alicia Moya
  • Jessica E. Snelson
  • Sean M. Collins
  • Sapnik, Adam
  • Georgina P. Robertson
  • Daniel J.M. Irving
  • Lothar Wondraczek
  • David A. Keen
  • Thomas D. Bennett

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, 30Na2O-70P2O5, 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 Tg shifted relative to the pristine materials. Annular dark field scanning transmission electron microscopy tomography, X-ray energy dispersive spectroscopy (EDS), nanoindentation and 31P NMR all indicated close mixing of the two phases, suggesting the formation of immiscible blends.

OriginalsprogEngelsk
TidsskriftChemical Science
Vol/bind14
Udgave nummer42
Sider (fra-til)11737-11748
Antal sider12
ISSN2041-6520
DOI
StatusUdgivet - 2023
Eksternt udgivetJa

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© 2023 The Royal Society of Chemistry.

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