In this work, we report the formation of superstructures assembled from organic tubular crystals mediated by metal-coordination chemistry. This template-free process involves the crystallization of molecules into crystals having a rectangular and uniform morphology, which then go on to fuse together into multibranched superstructures. The initially hollow and organic crystals are obtained under solvothermal conditions in the presence of a copper salt, whereas the superstructures are subsequently formed by aging the reaction mixture at room temperature. The mild thermodynamic conditions and the favorable kinetics of this unique self-assembly process allowed us to ex-situ monitor the superstructure formation by electron microscopy, highlighting a pivotal and unusual role for copper ions in their formation and stabilization.

中文翻译：

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金属配位诱导融合产生空心晶体分子超结构

在这项工作中，我们报告了由金属配位化学介导的有机管状晶体组装而成的超结构的形成。这种无模板过程涉及将分子结晶成具有矩形和均匀形态的晶体，然后继续融合成多支链上层结构。在铜盐存在的溶剂热条件下获得最初的空心和有机晶体，而随后通过在室温下老化反应混合物形成超结构。这种独特的自组装过程温和的热力学条件和有利的动力学使我们能够通过电子显微镜对超结构的形成进行异位监测，突出了铜离子在其形成和稳定中的关键和不寻常的作用。