High H 2 Adsorption in a Microporous Metal–Organic Framework with Open Metal Sites

A copper-based metal–organic framework (MOF) has been synthesized, and its structure has been solved by X-ray crystallography (see picture; Cu blue, C black, O red, framework pore yellow). The remarkably high hydrogen adsorption properties (2.47 wt %) of this compound have been studied. Metal–organic frameworks (MOFs) are a rapidly growing class of porous materials that are studied for their amenability to design1 and extraordinary permanent porosity.2 The recent discovery that MOFs take up significant amounts of hydrogen has further intensified research in this area.3 In particular, the focus remains on identifying strategies for designing MOFs with high hydrogen-storage capacities. We have already found that…