Lu Xiaocun, Li Xiaopeng, Guo Kai, Wang Jing, Huang Mingjun, Wang Jin-Liang, Xie Ting-Zheng, Moorefield Charles N, Cheng Stephen Z D, Wesdemiotis Chrys, Newkome George R
Department of Polymer Science, Department of Chemistry, The University of Akron, 302 Buchtel Common, Akron, OH 44325 (USA) http://www.dendrimers.com.
Chemistry. 2014 Oct 6;20(41):13094-8. doi: 10.1002/chem.201404358. Epub 2014 Aug 25.
A facile high yield, self-assembly process that leads to a terpyridine-based, three-dimensional, bis-rhomboidal-shaped, molecular wheel is reported. The desired coordination-driven supramolecular wheel involves eight structurally distorted tristerpyridine (tpy) ligands possessing a 60° angle between the adjacent tpy units and twelve Zn(2+) ions. The tpy ligand plays dual roles in the self-assembly process: two are staggered at 180° to create the internal hub, while six produce the external rim. The wheel can be readily generated by mixing the tpy ligand and Zn(2+) in a stoichiometric ratio of 2:3; full characterization is provided by ESI-MS, NMR spectroscopy, and TEM imaging.
报道了一种简便的高产率自组装过程，该过程可生成基于三联吡啶的三维双菱形分子轮。所需的配位驱动超分子轮包含八个结构扭曲的三三联吡啶（tpy）配体，相邻tpy单元之间的夹角为60°，以及十二个Zn(2+)离子。tpy配体在自组装过程中发挥双重作用：两个以180°交错排列形成内部轮毂，而六个形成外部轮缘。通过将tpy配体和Zn(2+)按化学计量比2:3混合，可轻松生成该分子轮；通过电喷雾质谱（ESI-MS）、核磁共振光谱和透射电子显微镜成像（TEM）提供了完整的表征。
