Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, Guizhou University, Guiyang 550025, China.
Inorg Chem. 2013 Feb 18;52(4):1909-15. doi: 10.1021/ic302145j. Epub 2013 Jan 29.
There is intensive interest in the design of tubular channels because of their novel structures and various applications in a variety of research fields. Herein, we present a series of coordination-driven Q[7]-derived organic nanochannels using an anion-induced strategy under different acid concentrations. An advantage of this approach is that the tubular channels not only retain the original character of the parent macrocyclic receptors but also provide deep hydrophobic cavities possessing guest binding sites. Importantly, this study also emphasizes the efficiency of the macrocyclic receptors in providing a tubular hydrophobic cavity by directly stacking on top of one another with the anion-fixed and by acid control. The resulting combination of hydrogen bonding, C-H···Cl, and ion-dipole interactions helps to stabilize these supramolecular architectures. Such systems are both tunable and versatile and allow for interconvertibility in the construction of nanochannels based on these macrocyclic receptors.
由于管状通道的新颖结构和在各种研究领域的各种应用，人们对其设计产生了浓厚的兴趣。在此，我们采用阴离子诱导策略，在不同的酸浓度下，展示了一系列由配位驱动的 Q[7]-衍生的有机纳米通道。这种方法的一个优点是，管状通道不仅保留了母体大环受体的原有特征，而且还提供了具有客体结合位点的深疏水性空腔。重要的是，这项研究还强调了大环受体通过与阴离子固定和酸控制直接堆叠在一起来提供管状疏水性空腔的效率。氢键、C-H···Cl 和离子偶极相互作用的结合有助于稳定这些超分子结构。这些系统既具有可调性又具有多功能性，并允许基于这些大环受体构建纳米通道的互变性。
