Self-assembly of nanoscale cuboctahedra by coordination chemistry
Self-assembly of nanoscale cuboctahedra by coordination chemistry
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DOI：
10.1038/19740
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发表时间：
1999-04-29
期刊：
影响因子：
64.8
通讯作者：
Stang, PJ
中科院分区：
文献类型：
--
作者：
Olenyuk, B;Whiteford, JA;Stang, PJ
自组装多面体结构在生物学中很常见。例如，许多病毒的外壳具有基于二十面体对称的结构（1）。合成多面体分子组装体的制备是一个具有挑战性的问题，但是超分子化学（2-4）现在已经发展到了可以解决这一任务的阶段。具有预定几何形状和明确内部环境的大分子和超分子实体对于包合现象（5-8）、分子识别（5，6）和催化（9）可能很重要。在这里，我们报告了使用由配位驱动的分子单元自组装到过渡金属离子（10），以在一个步骤中从20个三齿和二齿亚基制备立方八面体。立方八面体是一种阿基米德半正多面体，它结合了正方形和三角形的面。我们的自组装多面体胶囊，其特征是核磁共振和电喷雾质谱，直径约为5纳米。
Self-assembled polyhedral structures are common in biology. The coats of many viruses, for example, have a structure based on icosahedral symmetry(1). The preparation of synthetic polyhedral molecular assemblies represents a challenging problem, but supramolecular chemistry(2-4) has now advanced to the Feint where the task may be addressed. Macromolecular and supramolecular entities of predefined geometric shape and with well-defined internal environments are potentially important for inclusion phenomena(5-8), molecular recognition(5,6) and catalysis(9). Here we report the use of self-assembly of molecular units driven by coordination to transition-metal ions(10) to prepare a cuboctahedron from 20 tridentate and bidentate subunits in a single step. The cuboctahedron is an archimedean semiregular polyhedron that combines square and triangular faces. Our self-assembled polyhedral capsules, characterized by NMR and electrospray mass spectrometry, are around 5 nanometres in diameter.