Abstract:Reversible phase transformations (RPTs) of metal− organic frameworks not only create material diversity but also promise a self-restoration of crystals in a controllable manner. However, there are only limited examples because seeking for a convenient and effective trigger for RPTs, especially for RPTs with respect to spatiotemporal harmony in cleavage and reconstruction of metal−linker chemical bonds, is challenging. In this work, we found that zeolitic imidazolate framework (ZIF)-108 with Zn−N coordination b… Show more
“…76 The different strength of the Zn-N bond in different Zn-based imidazolate MOFs provides different applications for the materials; while stronger Zn-N bonds are desired for storage applications, weaker bonds can facilitate reversible phase transformation, which broadens the material's applicability. 77 Indeed, ZIF-108 undergoes metal substitution much easier than ZIF-8 does, the latter of which requires a base to prevent phase transformation during this process. 76,78 This suggests that the rate of growth should be higher for ZIF-8, as hydrolysis-resistant metal-ligand bonds lead to higher crystal growth rates.…”
Section: Chemical Composition and Mediummentioning
“…76 The different strength of the Zn-N bond in different Zn-based imidazolate MOFs provides different applications for the materials; while stronger Zn-N bonds are desired for storage applications, weaker bonds can facilitate reversible phase transformation, which broadens the material's applicability. 77 Indeed, ZIF-108 undergoes metal substitution much easier than ZIF-8 does, the latter of which requires a base to prevent phase transformation during this process. 76,78 This suggests that the rate of growth should be higher for ZIF-8, as hydrolysis-resistant metal-ligand bonds lead to higher crystal growth rates.…”
Section: Chemical Composition and Mediummentioning
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