Coordination-driven self-assembly: Solids with bidirectional porosity
Coordination-driven self-assembly: Solids with bidirectional porosity
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DOI：
10.1021/ja025773x
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发表时间：
2002-06-26
影响因子：
15
通讯作者：
Tykwinski, RR
中科院分区：
文献类型：
--
作者：
Campbell, K;Kuehl, CJ;Tykwinski, RR
配位驱动的自组装反应已用于制备各种离散的超分子物质，其中一些已显示出作为合成受体的前景。许多高度有序的配位聚合物和多孔网络已经以类似的方式制备。虽然其中一些固体能够在所得分子通道中吸收小有机分子，但真正多孔结构的形成经常受到晶格互穿的阻碍。可以规避这个问题的形成多孔固体的策略是基于纳米级大环化合物的共价结构，当其在固态下黯淡时，可以产生多孔的管状组件。我们将这些概念融入到双向多孔固体的实现中。共轭大环配体的金属定向自组装在溶液和固态中提供了离散的超分子实体。 X 射线晶体学分析表明，该组装件可以实现双向通道，并且仅将 ClCH2CH2Cl 掺入晶格中表明这些通道可能适合选择性吸收小有机客体。
Coordination-driven self-assembly reactions have been used in the preparation of a variety of discrete supramolecular species, some of which have shown promise as synthetic receptors. Many highly ordered coordination polymers and porous networks have been prepared in a similar fashion. While a few of these solids are capable of the uptake of small organic molecules in the resultant molecular channels, the formation of truly porous structures has frequently been thwarted by lattice interpenetration. A strategy for the formation of porous solids that may circumvent this problem is based on the covalent construction of nanoscale macrocycles which, when eclipsed in the solid state, may lead to porous, tubular assemblies. We have incorporated these concepts toward the realization of a bidirectionally porous solid. The metal-directed, self-assembly of a conjugated, macrocyclic ligand provides a discrete, supramolecular entity in solution and the solid state. X-ray crystallographic analysis establishes that this assembly packs such that bidirectional channels are realized, and the incorporation of only ClCH2CH2Cl into the crystal lattice demonstrates that these channels are potentially suitable for the selective uptake of small organic guests.