Dielmann Fabian, Fleischmann Matthias, Heindl Claudia, Peresypkina Eugenia V, Virovets Alexander V, Gschwind Ruth M, Scheer Manfred
Institut für Anorganische Chemie, Universität Regensburg, Institut für Organische Chemie, Universität Regensburg, 93040 Regensburg (Germany), Fax: (+49) 941-943-4439; The authors contributed equally to this work.
Chemistry. 2015 Apr 13;21(16):6208-14. doi: 10.1002/chem.201500692. Epub 2015 Mar 11.
The formation of reversible switchable nanostructures monitored by solution and solid-state methods is still a challenge in supramolecular chemistry. By a comprehensive solid state and solution study we demonstrate the potential of the fivefold symmetrical building block of pentaphosphaferrocene in combination with Cu(I) halides to switch between spheres of different porosity and shape. With increasing amount of CuX, the structures of the formed supramolecules change from incomplete to complete spherically shaped fullerene-like assemblies possessing an Ih -C80 topology at one side and to a tetrahedral-structured aggregate at the other. In the solid state, the formed nano-sized aggregates reach an outer diameter of 3.14 and 3.56 nm, respectively. This feature is used to reversibly encapsulate and release guest molecules in solution.
通过溶液和固态方法监测可逆可切换纳米结构的形成在超分子化学中仍然是一个挑战。通过全面的固态和溶液研究，我们证明了五磷杂二茂铁的五重对称结构单元与卤化亚铜相结合，能够在不同孔隙率和形状的球体之间切换。随着卤化铜用量的增加，形成的超分子结构从一侧具有Ih -C80拓扑结构的不完整球形富勒烯状组装体转变为另一侧的四面体结构聚集体。在固态下，形成的纳米级聚集体的外径分别达到3.14和3.56 nm。利用这一特性可以在溶液中可逆地封装和释放客体分子。
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