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Showing 1 to 9 of 9 for “"ZIFs"”.
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Mechanochemical approaches to MOF glasses and the thermal response of amorphous MOFs
… up the production of glass forming crystalline ZIFs, but also to produce ZIFs with specific chemical composition. This leads us to the production of a wide variety of ZIF glass formulations, with varying metal and organic com positions. We then exploit the scale-up and chemical specificity …
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The Effect of Framework Structure and Chemical Functionality on Melting in Zeolitic Imidazolate Frameworks
… in 50 years. Zeolitic imidazolate frameworks (ZIFs) are the most common MOF family that have been found to undergo melt-quenching. They are composed of tetrahedrally coordinated metal ions connected to imidazolate linkers. The dynamic nature of the melting mechanism in ZIFs has been …
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Crystalline, Amorphous, and Liquid Metal-Organic Frameworks at Non-Ambient Conditions
… function of varying chemical composition of the ZIFs, as well as of dynamic variables such as heating- and compression-rate. The two ZIFs were shown to be related by a continuous solid solution and this chemical substitution was found to systematically control the high-temperature behaviour. …
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Ab Initio Study of Amorphous Zeolitic Imidazolate Framework (A-ZIF) and Pyrophosphate crystals
Zeolitic imidazolate frameworks (ZIFs) are a rapidly emerging class of versatile porous material with many potential applications. Here, we report the construction of an amorphous ZIF (a-ZIF) model from a near-perfect continuous random network model of a-SiO₂. The radial distribution function is in …
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Understanding the Chemistry and Mechanical Properties of Metal-Organic Framework-Polymer Composites
… strength. Zeolitic imidazolate frameworks (ZIFs), a subdivision of MOFs, were chosen as the template owing to their facile synthesis, structural diversity, and high crystallinity. Two types of micron-sized ZIFs, ZIF-8 with Zn2+ node and ZIF-67 with Co2+ node, were synthesized to compare the …
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Polymer molecular sieve membranes
… microporous zeolitic imidazolate frameworks (ZIFs) nanocrystals are incorporated into a polyimide polymer matrix via solution mixing. The resulting nanocomposite membranes show excellent dispersion of nanoparticles, good adhesion at the interface, and enhanced gas permeability while the …
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The Development of Hybrid Liquids and Glasses
… MOFs known as Zeolitic Imidazolate Frameworks (ZIFs). This work begins with a discussion of the structure of MOF glasses, particularly focusing on structure occurring beyond the first metal-metal correlation, also termed mid-range order. The observed midrange order in MOF glasses, measured by …
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Synthesis and Characterisation of new materials formed from metal-organic frameworks and glasses
… derived from zeolitic imidazolate frameworks (ZIFs). A ZIF that has exhibited remarkable glass forming ability is ZIF-62, [Zn(Im)1.75(bIm)0.25] where Im is imidazolate and bIm is benzimidazolate. Several studies have investigated composite formation with ZIF-62 as one of the components. …