pH-Controlled motions in mechanically interlocked molecules,Materials Chemistry Frontiers

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pH-Controlled motions in mechanically interlocked molecules
Materials Chemistry Frontiers ( IF 6.0 ) Pub Date : 2019-09-30 , DOI: 10.1039/c9qm00546c
He-Ye Zhou _{1,

2,

3,

4,

5} , Ying Han _{1,

2,

3,

4,

5} , Chuan-Feng Chen _{1,

2,

3,

4,

5}

Affiliation

Mechanically interlocked molecules (MIMs), especially rotaxanes and catenanes, allow large-amplitude movement at the molecular level, making them the perfect prototypes for artificial molecular switches and machines. By applying external stimuli, the noncovalent interactions between their subcomponents can be interrupted and formed reversibly, leading to mechanical motions. Among various stimuli, pH stimulation is one of the most powerful and commonly used means of controlling motions by acids and bases. In this review, we summarize the pH-controlled mechanical motions including translocation in rotaxanes, circumrotation in catenanes and other kinds of motion in more sophisticated mechanomolecules, and discuss their operating mechanisms. In addition, we present several more recent developments of alternative stimuli for pH responsive motions.

中文翻译：

机械连锁分子中的pH控制运动

机械互锁的分子（MIM），尤其是轮烷和链烷，可以在分子水平上发生大幅度的运动，使其成为人造分子开关和机器的理想原型。通过施加外部刺激，它们的子成分之间的非共价相互作用可以被中断和可逆地形成，从而导致机械运动。在各种刺激中，pH刺激是通过酸和碱控制运动的最有力且最常用的手段之一。在这篇综述中，我们总结了pH控制的机械运动，包括轮烷中的易位，链烷中的旋转和其他更复杂的机械分子中的其他类型的运动，并讨论了它们的工作机理。此外，我们介绍了pH响应运动的替代刺激的几个最新的发展。

更新日期：2019-12-19

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