Isoreticular metal-organic frameworks, process for forming the same, and systematic design of pore size and functionality therein, with application for gas storage

摘要: The ability to design and construct solid-state materials with pre-determined structures is a grand challenge in chemistry. An inventive strategy based on reticulating metal ions organic carboxylate links into extended networks has been advanced point that allows the of porous which pore size functionality can be varied systematically. MOF-5, prototype new class one constructed from octahedral Zn-O-C clusters benzene links, was used demonstrate its 3-D system functionalized groups, -Br, -NH2, -OC3H7, -OC5H11, -H4C2 -H4C4, expanded long molecular struts biphenyl, tetrahydropyrene, pyrene, terphenyl. direct formation presence desired link an essential feature this strategy, resulted isoreticular (having same framework topology) series sixteen well-defined whose crystals have open space representing up 91.1% crystal volume, homogeneous periodic pores incrementally 3.8 28.8 angstroms. Unlike unpredictable nature zeolite other sieve syntheses, deliberate control exercised at level these expected tremendous implications properties future technologies. Indeed, data indicate members represent first monocrystalline mesoporous organic/inorganic frameworks, exhibit highest capacity for methane storage (155 cm3/cm3 36 atm) lowest densities (0.41 0.21 g/cm3) attained date any crystalline material room temperature.