Subcomponent Self-Assembly and Guest-Binding Properties of Face-Capped Fe4L48+ Capsules
Subcomponent Self-Assembly and Guest-Binding Properties of Face-Capped Fe4L48+ Capsules
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DOI：
10.1021/ja2092272
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发表时间：
2012-03-21
影响因子：
15
通讯作者：
Nitschke, Jonathan R.
中科院分区：
文献类型：
--
作者：
Bilbeisi, Rana A.;Clegg, Jack K.;Nitschke, Jonathan R.
开发了一种通过子组分自组装制备Fe 4L 4面帽四面体笼的一般方法，并使用四种不同的C-3-对称三胺，2-甲酰吡啶和铁（II）进行了证明。三个三胺也被证明形成Fe 2L 3螺旋时，使用适当的化学计量的子组件。观察到两个笼在固态下具有几乎相同的Fe-Fe距离，这使得它们的配体能够共同并入混合笼的集合中。只有一个笼子结合了一个足够大的空腔与客体结合所需的足够小的孔隙，以大小和形状选择性的方式吸收了各种各样的客体物种。
A general method for preparing Fe4L4 face-capped tetrahedral cages through subcomponent self-assembly was developed and has been demonstrated using four different C-3-symmetric triamines, 2-formylpyridine, and iron(II). Three of the triamines were shown also to form Fe2L3 helicates when the appropriate stoichiometry of subcomponents was used. Two of the cages were observed to have nearly identical Fe-Fe distances in the solid state, which enabled their ligands to be coincorporated into a collection of mixed cages. Only one of the cages combined a sufficiently large cavity with the sufficiently small pores required for guest binding, taking up a wide variety of guest species in size- and shape-selective fashion.