Face-Directed Assembly of Molecular Cubes: In Situ Substitution of a Predetermined Concave Cluster
Face-Directed Assembly of Molecular Cubes: In Situ Substitution of a Predetermined Concave Cluster
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DOI：
10.1002/anie.202010824
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发表时间：
2020-10-07
影响因子：
16.6
通讯作者：
Su, Zhongmin
中科院分区：
文献类型：
--
作者：
Gong, Yaru;Qin, Chao;Su, Zhongmin
具有可预测结构的金属有机多面体的系统设计和自组装一直是晶体工程中的一个挑战。本文报道了一种凹形多钒氧酸盐簇[V6O6(OCH3)(9)(SO4)(4)](5-)，可在特定的反应条件下原位生成。在此基础上，通过桥接-配体-取代策略可得到一种潜在的三价分子构建块[V6O6(OCH3)(9)(SO4)(CO2)(3)](2-)，它具有适合分子立方体设计的角度信息。利用三价分子构建块的定向组装和多种四异位羧酸盐连接体，设计和构建了一系列具有相同拓扑结构但功能和尺寸不同的金属有机立方体（VMOC-1-VMOC-5）。用vmoc -3进行的包合研究表明，它们是选择性捕获尺寸匹配的多环芳烃客体分子的潜在分子受体。
Systematic design and self-assembly of metal-organic polyhedra with predictable configurations has been a long-standing challenge in crystal engineering. Herein a concave polyoxovanadate cluster, [V6O6(OCH3)(9)(SO4)(4)](5-), which can be generated in situ under specific reaction conditions, is reported. Based on this cluster, a potential trivalent molecular building block, [V6O6(OCH3)(9)(SO4)(CO2)(3)](2-), can be obtained by the bridging-ligand-substitution strategy and it possesses appropriate angle information for the design of molecular cubes. Utilizing the face-directed assembly of the trivalent molecular building block and a diverse set of tetratopic carboxylate linkers, a series of metal-organic cubes (VMOC-1-VMOC-5) with the same topology but different functionalities and dimensions were designed and constructed. An inclusion study usingVMOC-3shows that they are potential molecular receptors for selective capture of size-matching polycyclic aromatic hydrocarbon guest molecules.