2024
DOI: 10.1038/s41467-024-45326-8
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Melt-quenched carboxylate metal–organic framework glasses

Minhyuk Kim,
Hwa-Sub Lee,
Dong-Hyun Seo
et al.

Abstract: Although carboxylate-based frameworks are commonly used architectures in metal-organic frameworks (MOFs), liquid/glass MOFs have thus far mainly been obtained from azole- or weakly coordinating ligand-based frameworks. This is because strong coordination bonds of carboxylate ligands to metals block the thermal vitrification pathways of carboxylate-based MOFs. In this study, we present the example of carboxylate-based melt-quenched MOF glasses comprising Mg2+ or Mn2+ with an aliphatic carboxylate ligand, adipat… Show more

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Cited by 19 publications
(4 citation statements)
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“…The calculated Martens’ hardness ranges between 0.02 and 0.06 GPa (Figures S8–S9 and Table S1). Comparing these values to reported experimental measurements of CP/MOF glass suggests that CoHCF-g is much softer than any reported CP/MOF glass . For instance, the hardness values of previously reported Fe­[Fe] 3/4 -g and Cu­[Fe] 2/3 -g are 0.51 and 0.46 GPa, respectively .…”
Section: Resultsmentioning
confidence: 58%
See 1 more Smart Citation
“…The calculated Martens’ hardness ranges between 0.02 and 0.06 GPa (Figures S8–S9 and Table S1). Comparing these values to reported experimental measurements of CP/MOF glass suggests that CoHCF-g is much softer than any reported CP/MOF glass . For instance, the hardness values of previously reported Fe­[Fe] 3/4 -g and Cu­[Fe] 2/3 -g are 0.51 and 0.46 GPa, respectively .…”
Section: Resultsmentioning
confidence: 58%
“…Comparing these values to reported experimental measurements of CP/MOF glass suggests that CoHCF-g is much softer than any reported CP/MOF glass. 25 For instance, the hardness values of previously reported Fe[Fe] 3/4 -g and Cu[Fe] 2/3 -g are 0.51 and 0.46 GPa, respectively. 15 The hardness of glasses from zeolitic imidazolate frameworks (ZIFs) is ca.…”
Section: ■ Results and Discussionmentioning
confidence: 96%
“…Several a g MOFs are reported in the literature, with a large majority based on zeolitic imidazolate frameworks (ZIFs). 57,92–98 Control of the melting temperature of these MOFs, with the aim of reducing the T m below that of the T d , has been achieved through the incorporation of bulky, flexible, weakly coordinating or low symmetry ligands to non-melting MOFs, or through the introduction of an ionic liquid. 92,93,99,100 The presence of the ionic liquid stabilises the de-coordinated linker, facilitating the breakage of M–L bonds and lowering the enthalpy of melting.…”
Section: Synthesis Of Amofsmentioning
confidence: 99%
“…57,92–98 Control of the melting temperature of these MOFs, with the aim of reducing the T m below that of the T d , has been achieved through the incorporation of bulky, flexible, weakly coordinating or low symmetry ligands to non-melting MOFs, or through the introduction of an ionic liquid. 92,93,99,100 The presence of the ionic liquid stabilises the de-coordinated linker, facilitating the breakage of M–L bonds and lowering the enthalpy of melting. 99 Amorphisation, through alternative methodologies, has been shown to lower the T m of a MOF, allowing for subsequent quenching into an a g MOF material.…”
Section: Synthesis Of Amofsmentioning
confidence: 99%