Multiple Functional Groups of Varying Ratios in Metal-Organic Frameworks
Multiple Functional Groups of Varying Ratios in Metal-Organic Frameworks
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DOI：
10.1126/science.1181761
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发表时间：
2010-02-12
期刊：
影响因子：
56.9
通讯作者：
Yaghi, Omar M.
中科院分区：
文献类型：
--
作者：
Deng, Hexiang;Doonan, Christian J.;Yaghi, Omar M.
我们表明，金属有机框架（mof）可以在连接基团上结合大量不同的功能，从而混合连接剂，而不是形成单独的域。我们用1,4-苯二甲酸酯（本文用“A”表示）及其衍生物- nh2、- br、-(Cl)(2)、- no2、-(CH3)(2)、- c4h4、-(OC3H5)(2)和-(OC7H7)(2)（分别用“B”到“I”表示）合成了18种多元（MTV） MOF-5型结构，在一个相中含有多达8种不同的功能。这些结构的主链（氧化锌和苯基）是有序的，但官能团的分布是无序的。孔隙中几个官能团的复杂排列可以导致其性质不仅仅是纯组分的线性总和。例如，这个系列的一个成员，MTV-MOF-5-EHI，对二氧化碳的选择性比一氧化碳的选择性高出400%。
We show that metal-organic frameworks (MOFs) can incorporate a large number of different functionalities on linking groups in a way that mixes the linker, rather than forming separate domains. We made complex MOFs from 1,4-benzenedicarboxylate (denoted by "A" in this work) and its derivatives -NH2, -Br, -(Cl)(2), -NO2, -(CH3)(2), -C4H4, -(OC3H5)(2), and -(OC7H7)(2) (denoted by "B" to "I," respectively) to synthesize 18 multivariate (MTV) MOF-5 type structures that contain up to eight distinct functionalities in one phase. The backbone (zinc oxide and phenylene units) of these structures is ordered, but the distribution of functional groups is disordered. The complex arrangements of several functional groups within the pores can lead to properties that are not simply linear sums of those of the pure components. For example, a member of this series, MTV-MOF-5-EHI, exhibits up to 400% better selectivity for carbon dioxide over carbon monoxide compared with its best same-link counterparts.