Balancing Ligand Flexibility versus Rigidity for the Stepwise Self‐Assembly of M
<sub>12</sub>
L
<sub>24</sub>
via M
<sub>6</sub>
L
<sub>12</sub>
Metal–Organic Cages
作者:Cui‐Lian Liu、Eduard O. Bobylev、Yang Fu、David A. Poole、Koen Robeyns、Charles‐André Fustin、Yann Garcia、Joost N. H. Reek、Michael L. Singleton
DOI:10.1002/chem.202001399
日期:2020.9.16
interactions, were synthesized and used for self‐assembly with Pd2+. As these weak interactions are easily broken, the bend angles have a controlled flexibility giving access to M2(L1)4, M6(L2)12, and M12(L2)24 cages. By controlling the self‐assembly conditions this process can be directed in a stepwise fashion. Additionally, the multiple endohedral hydrogen‐bonding sites on the ligand were found to play
非共价相互作用对于指导蛋白质跨多个中间体折叠非常重要,甚至可以提供具有不同特性和功能的多个稳定结构的访问。本文中,我们描述了一种在金属有机笼的自组装中模仿这种行为的方法。合成了两个配体,其弯曲角由非共价相互作用控制,而一个配体缺乏上述相互作用,并用于与Pd 2+的自组装。由于这些弱相互作用很容易破坏,因此弯曲角度具有可控制的柔韧性,可以访问M 2(L1)4,M 6(L2)12和M 12(L2)24笼。通过控制自组装条件,该过程可以逐步进行。此外,还发现配体上的多个内表面氢键位在中性客体的结合和区分中起着作用。