California Nanosystems Institute, University of California-Los Angeles (UCLA)-Department of Energy (DOE) Institute of Genomics and Proteomics, Department of Chemistry and Biochemistry, UCLA, 607 Charles E. Young Drive East, Los Angeles, CA 90095, USA.
Science. 2010 Feb 12;327(5967):846-50. doi: 10.1126/science.1181761.
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.
我们表明，金属有机骨架（MOFs）可以在连接基团上以混合配体的方式结合大量不同的功能，而不是形成单独的域。我们使用 1,4-苯二甲酸（在本工作中表示为“A”）及其衍生物 -NH2、-Br、-(Cl)2、-NO2、-(CH3)2、-C4H4、-(OC3H5)2 和 -(OC7H7)2（分别表示为“B”至“I”）制造了复杂的 MOF-5 型结构的 18 种多元（MTV）结构，其中一种相中包含多达八种不同的功能。这些结构的骨架（氧化锌和亚苯基单元）是有序的，但官能团的分布是无序的。几个官能团在孔内的复杂排列可以导致性质不是纯组分的简单线性总和。例如，该系列的一个成员，MTV-MOF-5-EHI，与最佳同配体相比，对二氧化碳的选择性提高了 400%以上。
