di Gregorio Maria Chiara, Ranjan Priyadarshi, Houben Lothar, Shimon Linda J W, Rechav Katya, Lahav Michal, van der Boom Milko E
J Am Chem Soc. 2018 Jul 25;140(29):9132-9139. doi: 10.1021/jacs.8b03055. Epub 2018 Jul 16.
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.
在这项工作中，我们报道了由金属配位化学介导的有机管状晶体组装形成的超结构。这个无模板过程涉及分子结晶成具有矩形且均匀形态的晶体，然后这些晶体融合在一起形成多分支超结构。最初的空心有机晶体是在溶剂热条件下于铜盐存在的情况下获得的，而超结构随后通过在室温下使反应混合物老化而形成。这种独特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非原位监测，突出了铜离子在其形成和稳定过程中关键且不寻常的作用。
