Systematic design of pore size and functionality in isoreticular MOFs and their application in methane storage
Systematic design of pore size and functionality in isoreticular MOFs and their application in methane storage
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DOI：
10.1126/science.1067208
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发表时间：
2002-01-18
期刊：
影响因子：
56.9
通讯作者：
Yaghi, OM
中科院分区：
文献类型：
--
作者：
Eddaoudi, M;Kim, J;Yaghi, OM
基于网状金属离子和有机羧酸酯连接成扩展网络的策略已经被推进到允许设计多孔结构的程度，其中孔径和功能可以系统地变化。金属-有机骨架（MOF-5）是一类新型多孔材料的原型，由八面体Zn-O-C簇和苯环构成，用于证明其三维多孔系统可以用有机基团-Br，-NH 2，-OC 3 H 7，-OC 5 H 11，-C 2 H 4和-C 4 H 4官能化，可以用联苯、四氢芘、芘、三联苯等同分子支柱展开。我们合成了一个isoreticutar系列（一个具有相同的框架拓扑结构）的16个高度结晶的材料，其开放空间代表高达91.1%的晶体体积，以及均匀的周期性孔，可以从3.8到28.8埃递增变化。该系列中的一个成员表现出高的甲烷储存容量（在标准温度和压力下，在36个大气压和环境温度下，每克240立方厘米），而其他成员在室温下的晶体材料的密度最低（0.41至0.21克/立方厘米）。
A strategy based on reticulating metal ions and organic carboxylate links into extended networks has been advanced to a point that allowed the design of porous structures in which pore size and functionality could be varied systematically. Metal-organic framework (MOF-5), a prototype of a new class of porous materials and one that is constructed from octahedral Zn-O-C clusters and benzene links, was used to demonstrate that its three-dimensional porous system can be functionalized with the organic groups -Br, -NH2, -OC3H7, -OC5H11,-C2H4, and -C4H4 and that its pore size, can be expanded with the tong molecular struts biphenyl, tetrahydropyrene, pyrene, and terphenyl. We synthesized an isoreticutar series (one that has the same framework topology) of 16 highly crystalline materials whose open space represented up to 91.1% of the crystal volume, as well as homogeneous periodic pores that can be incrementally varied from 3.8 to 28.8 angstroms. One member of this series exhibited a high capacity for methane storage (240 cubic centimeters at standard temperature and pressure per gram at 36 atmospheres and ambient temperature), and others the lowest densities (0.41 to 0.21 gram per cubic centimeter) for a crystalline material at room temperature.