Porous purple glass – a cobalt imidazolate glass with accessible porosity from a meltable cobalt imidazolate framework

Abstract

We report the first microporous cobalt imidazolate glass obtained from a meltable cobalt-based zeolitic imidazolate framework, ZIF-62(Co).

Unraveling the effects of linker substitution on structural, electronic and optical properties of amorphous zeolitic imidazolate frameworks-62 (a-ZIF-62) glasses: a DFT study

“…18 Besides ZIF-62, cobalt-based ZIF-62 can form cobalt imidazolate glass from similar procedure. 36 Despite the experiments and simulations provide the structural information of this a-ZIF-62 glass, there are limited reports on electronic structure, intrinsic bonding and optical properties. These properties are the key point for us to have a deeper understanding of this novel amorphous ZIF glass, and can be merely obtained by the rst principle calculations.…”

A New Dimension for Coordination Polymers and Metal–Organic Frameworks: Towards Functional Glasses and Liquids

“…Contraction of the pore volume from 0.17 to 0.12 vol % with a concomitant change in the pore size distribution occurs on vitrification of the crystalline state. Co‐ZIF‐62, with T m =430 °C, is also reported to be a precursor for a MOF glass . The MQG of Co‐ZIF‐62 contains a few percent metallic cobalt and retains 50 % porosity (CO 2 uptake is about 18 mL g −1 at 100 kPa, 273 K) compared to the crystalline state.…”

“…Co-ZIF-62, with T m = 430 8 8C, is also reported to be aprecursor for aM OF glass. [30] TheM QG of Co-ZIF-62 contains af ew percent metallic cobalt and retains 50 %porosity (CO 2 uptake is about 18 mL g À1 at 100 kPa, 273 K) compared to the crystalline state. Preferential adsorption kinetics of propylene over propane is observed for the Zn-ZIF-62-bimx glass with increasing amounts of bulky benzimidazole ligands (x = 0.05, 0.17, 0.35).…”

Eine neue Dimension von Koordinationspolymeren und Metall‐organischen Gerüsten: hin zu funktionellen Gläsern und Flüssigkeiten

“…Bei einer direkten Verglasung des kristallinen Zustandes kommt es zu einer Kontraktion des Porenvolumens von 0.17 auf 0.12 % unter zeitgleicher Änderung der Porengrößenverteilung. Mit einer Schmelztemperatur von T m =430 °C wurde Co‐ZIF‐62 ebenfalls als geeigneter Ausgangsstoff für die Herstellung eines MOF‐Glases beschrieben . Das MQG von Co‐ZIF‐62 enthält einige Prozentanteile von metallischem Cobalt und behält 50 % der ursprünglichen Porosität des kristallinen Zustandes bei (die CO 2 ‐Aufnahme liegt bei ungefähr 18 mL g −1 bei 100 kPa, 273 K).…”