Dendronized organoplatinum(II) metallacyclic polymers constructed by hierarchical coordination-driven self-assembly and hydrogen-bonding interfaces.
Dendronized organoplatinum(II) metallacyclic polymers constructed by hierarchical coordination-driven self-assembly and hydrogen-bonding interfaces.
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DOI：
10.1021/ja4092193
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发表时间：
2013-11
影响因子：
15
通讯作者：
Xuzhou Yan;B. Jiang;Timothy R. Cook;Yanyan Zhang;Jinying Li;Y. Yu;Feihe Huang;Hai‐Bo Yang;
中科院分区：
文献类型：
--
作者：
Xuzhou Yan;B. Jiang;Timothy R. Cook;Yanyan Zhang;Jinying Li;Y. Yu;Feihe Huang;Hai‐Bo Yang;
我们描述了一种高效制备菱形金属环的方法，这种金属环在用2-脲基-4-嘧啶酮（UPy）修饰的供体和含有悬垂[G1]-[G3]树突的受体混合后自组装。形成的菱形体随后通过h键UPy界面聚合成枝状有机铂（II）金属环聚合物，具有传统枝状聚合物的结构特征，同时又具有超分子聚合物的动态可逆性。通过利用分层自组装，即配位驱动的自组装与氢键的统一，可以在单一材料中保留这两种性质，这为枝晶化金属循环和随后的高有序提供了便利的途径。这里定义的超分子聚合代表了一种提供具有自适应特性的结构复杂和有序聚合物材料的新方法。
We describe the efficient preparation of rhomboidal metallacycles that self-assemble upon mixing a donor decorated with 2-ureido-4-pyrimidinone (UPy) with acceptors containing pendant [G1]-[G3] dendrons. The formed rhomboids subsequently polymerize into dendronized organoplatinum(II) metallacyclic polymers through H-bonding UPy interfaces, which possess the structural features of conventional dendronized polymers as well as the dynamic reversibility of supramolecular polymers. Preservation of both properties in a single material is achieved by exploiting hierarchical self-assembly, namely the unification of coordination-driven self-assembly with H-bonding, which provides facile routes to dendronized metallacycles and subsequent high ordering. The supramolecular polymerization defined here represents a novel method to deliver architecturally complex and ordered polymeric materials with adaptive properties.