Liu Jialin, Huang Yan, Bai Qixia, Yang Qiaoan, Wu Xinyi, Zhang Limin, Wu Tun, Wang Pingshan, Wang Jianqiao, Zhang Zhe
Institute of Environmental Research at Greater Bay Area, Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, Guangzhou University, Guangzhou 510006, China.
School of Environmental Science and Engineering, Key Laboratory for Water Quality and Conservation of the Pearl River Delta, Ministry of Education, Guangzhou University, Guangzhou 510006, China.
Dalton Trans. 2024 Sep 10;53(35):14701-14709. doi: 10.1039/d4dt01169d.
Due to their unique physical and chemical properties, metal-organic cage structures have great potential for applications in various fields. However, current studies have mainly focused on highly symmetric structures assembled from single metal ions and organic ligands, limiting their diversity and complexity, and there are still relatively few studies on the dynamic formation process of metal-organic cages. Herein, we constructed a series of metal-organic cages with different sizes assembled from the highly-stable coordination of 2,2':6',2''-terpyridine-based tetratopic ligands and various metals ions such as Zn, Cu, Co and Fe. Furthermore, the intermolecular exchange process between the metal-organic cages was explored through the dynamic exchange of ligands, and the formation of a series of hybrid supramolecular nanocages together with their final tendency to form a predominant structure of M24L14L28 was observed. In addition, the binding of metal-organic cages with 5,10,15,20-tetrakis(3,4,5-trimethoxyphenyl) porphyrin-Zn was also investigated. This study not only expands the complexity and diversity of metal-organic cages, but also provides a new perspective for studying the dynamic behaviour of metal-organic cages.
由于其独特的物理和化学性质，金属有机笼状结构在各个领域具有巨大的应用潜力。然而，目前的研究主要集中在由单一金属离子和有机配体组装而成的高度对称结构上，限制了它们的多样性和复杂性，并且关于金属有机笼的动态形成过程的研究仍然相对较少。在此，我们通过基于2,2':6',2''-三联吡啶的四齿配体与各种金属离子（如Zn、Cu、Co和Fe）的高度稳定配位，构建了一系列不同尺寸的金属有机笼。此外，通过配体的动态交换探索了金属有机笼之间的分子间交换过程，并观察到一系列混合超分子纳米笼的形成及其最终形成M24L14L28主要结构的趋势。此外，还研究了金属有机笼与5,10,15,20-四（3,4,5-三甲氧基苯基）卟啉-Zn的结合。这项研究不仅扩展了金属有机笼的复杂性和多样性，还为研究金属有机笼的动态行为提供了新的视角。
