[EN] FUNCTIONALIZED AND MULTIVARIATE BTB-BASED METAL ORGANIC FRAMEWORKS [FR] STRUCTURES DE SQUELETTES ORGANOMÉTALLIQUES À BASE DE BTB À PLUSIEURS VARIABLES ET FONCTIONNALISÉS
Introduction of Functionality, Selection of Topology, and Enhancement of Gas Adsorption in Multivariate Metal–Organic Framework-177
作者:Yue-Biao Zhang、Hiroyasu Furukawa、Nakeun Ko、Weixuan Nie、Hye Jeong Park、Satoshi Okajima、Kyle E. Cordova、Hexiang Deng、Jaheon Kim、Omar M. Yaghi
DOI:10.1021/ja512311a
日期:2015.2.25
Metal-organic framework-177 (MOF-177) is one of the most porous materials whose structure is composed of octahedral Zn4O(-COO)(6) and triangular 1,3,5-benzenetribenzoate (BTB) units to make a three-dimensional extended network based on the qom topology. This topology violates a long-standing thesis where highly symmetric building units are expected to yield highly symmetric networks. In the case of octahedron and triangle combinations, MOFs based on pyrite (pyr) and rutile (rtl) nets were expected instead of qom. In this study, we have made 24 MOF-177 structures with different functional groups on the triangular BTB linker, having one or more functionalities. We find that the position of the functional groups on the BTB unit allows the selection for a specific net (qom, pyr, and rtl), and that mixing of functionalities (-H, -NH2, and -C4H4) is an important strategy for the incorporation of a specific functionality (-NO2) into MOF-177 where otherwise incorporation of such functionality would be difficult. Such mixing of functionalities to make multivariate MOF-177 structures leads to enhancement of hydrogen uptake by 25%.
[EN] VERY LOW DENSITY METAL ORGANIC FRAMEWORKS WITH LARGE PORE VOLUMES<br/>[FR] STRUCTURES ORGANOMÉTALLIQUES TRÈS BASSE DENSITÉ À PORES VOLUMINEUX
申请人:UNIV CALIFORNIA
公开号:WO2015161037A1
公开(公告)日:2015-10-22
The disclosure provides for metal organic frameworks (MOFs) which comprise a plurality of repeating magnesium-based SBUs that are linked together by BTB-based linking ligands. The disclosure further provides for the use of these MOFs in variety of applications, including for gas separation, gas storage, catalysis, and water storage.