Stimuli-responsive structural transformations are common in artificial coordination assemblies and can help expand the engineering of programmable functional materials. In particular, chemical guests have proven to act as stimuli and signals inducing structural interconversions in Metal-Organic Cages (MOCs). In addition to cages, other related classes of coordination assemblies can express structural reorganization upon chemical binding to produce new MOC constructs, many of which do not form otherwise, and exhibit properties and functions not available before the transformation. This review highlights recent examples of such a class of guest-induced transformations. The connection between changes and host-guest interactions is examined for both neutral and anionic guests, pointing out that in-situ formed molecular cargoes may also exert conversions. Cases of mixtures of MOCs that redistribute upon encapsulation of complementary species are also featured. This review thus aims to provide an update and new methodological insights into guest-responsive MOCs for enhancing their design and applications.

中文翻译：

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金属有机笼中的客体诱导转变

刺激响应结构转换在人工协调组件中很常见，可以帮助扩展可编程功能材料的工程。特别是，化学客体已被证明可作为诱导金属有机笼 (MOC) 结构互变的刺激和信号。除了笼子之外，其他相关类别的配位组件可以在化学结合时表达结构重组，以产生新的 MOC 结构，其中许多结构不会以其他方式形成，并表现出转化前不可用的特性和功能。这篇评论重点介绍了此类由客人引起的转变的最新例子。中性和阴离子客体都检查了变化和主客交互之间的联系，指出原位形成的分子货物也可能产生转化。MOC 的混合物在封装互补物种时重新分布的案例也有特色。因此，本次审查旨在为来宾响应 MOC 提供更新和新的方法论见解，以增强其设计和应用。