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Metal-organic framework crystal-glass composites.
Nature Communications ( IF 14.7 ) Pub Date : 2019-06-12 , DOI: 10.1038/s41467-019-10470-z
Jingwei Hou 1 , Christopher W Ashling 1 , Sean M Collins 1 , Andraž Krajnc 2 , Chao Zhou 1 , Louis Longley 1 , Duncan N Johnstone 1 , Philip A Chater 3 , Shichun Li 1, 4 , Marie-Vanessa Coulet 5 , Philip L Llewellyn 5 , François-Xavier Coudert 6 , David A Keen 7 , Paul A Midgley 1 , Gregor Mali 2 , Vicki Chen 8, 9 , Thomas D Bennett 1
Affiliation  

The majority of research into metal-organic frameworks (MOFs) focuses on their crystalline nature. Recent research has revealed solid-liquid transitions within the family, which we use here to create a class of functional, stable and porous composite materials. Described herein is the design, synthesis, and characterisation of MOF crystal-glass composites, formed by dispersing crystalline MOFs within a MOF-glass matrix. The coordinative bonding and chemical structure of a MIL-53 crystalline phase are preserved within the ZIF-62 glass matrix. Whilst separated phases, the interfacial interactions between the closely contacted microdomains improve the mechanical properties of the composite glass. More significantly, the high temperature open pore phase of MIL-53, which spontaneously transforms to a narrow pore upon cooling in the presence of water, is stabilised at room temperature in the crystal-glass composite. This leads to a significant improvement of CO2 adsorption capacity.



中文翻译:

金属有机骨架的晶体玻璃复合材料。

对金属有机框架(MOF)的大多数研究都集中在其晶体性质上。最近的研究揭示了该系列中的固液过渡,我们在这里使用它来创建一类功能,稳定和多孔的复合材料。本文描述了MOF晶体玻璃复合材料的设计,合成和表征,其是通过将晶体MOF分散在MOF玻璃基质中形成的。MIL-53晶相的配位键和化学结构保留在ZIF-62玻璃基质中。在分离相的同时,紧密接触的微区之间的界面相互作用改善了复合玻璃的机械性能。更重要的是,MIL-53的高温开孔相在有水冷却时会自发转变为狭窄的孔,在室温下稳定在晶体玻璃复合物中。这导致CO的显着改善2吸附能力。

更新日期:2019-06-12
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