A flexible interpenetrating coordination framework with a bimodal porous functionality
A flexible interpenetrating coordination framework with a bimodal porous functionality
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DOI：
10.1038/nmat1827
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发表时间：
2007-02-01
期刊：
影响因子：
41.2
通讯作者：
Kitagawa, Susumu
中科院分区：
文献类型：
--
作者：
Maji, Tapas Kumar;Matsuda, Ryotaro;Kitagawa, Susumu
将功能部件引入开放框架材料中，调节孔径/形状和整体多孔活性，将为框架工程和新材料的制造开辟新途径。我们设计并合成了双峰微孔双重互穿网络{[Ni(bpe)(2)(N(CN)(2))](N(CN)(2))(5H2O)}(n) (1)，分别具有阴离子N(CN)(2)(-)（二氰胺）和中性水分子的两种类型的通道。脱水骨架提供游离 N(CN)(2)(-) 与较小的 N-3(-) 阴离子的特异性阴离子交换和选择性气体吸附的双重功能。 N-3 交换框架导致两个互穿框架的相互位置错位，导致通道对应部分的有效孔径增加，并且比合成框架中的吸附物容纳量更高 (1)，这显示了柔性多孔框架中受控吸附性能的第一种情况。
Introducing a functional part into open-framework materials that tunes the pore size/shape and overall porous activity will open new routes in framework engineering and in the fabrication of new materials. We have designed and synthesized a bimodal microporous twofold interpenetrating network {[Ni(bpe)(2)(N(CN)(2))](N(CN)(2))(5H2O)}(n) (1), with two types of channel for anionic N(CN)(2)(-) (dicyanamide) and neutral water molecules, respectively. The dehydrated framework provides a dual function of specific anion exchange of free N(CN)(2)(-) for the smaller N-3(-) anions and selective gas sorption. The N-3-exchanged framework leads to a dislocation of the mutual positions of the two interpenetrating frameworks, resulting in an increase in the effective pore size in one of the counterparts of the channels and a higher accommodation of adsorbate than in the as-synthesized framework (1), showing the first case of controlled sorption properties in flexible porous frameworks.