Shanghai Key Laboratory of Green Chemistry and Chemical Processes, Shanghai Frontiers Science Center of Molecule Intelligent Syntheses, School of Chemistry and Molecular Engineering, East China Normal University, 3663 N. Zhongshan Road, Shanghai, P. R. China.
Wuhu Hospital Affiliated to East China Normal University (The Second People's Hospital of Wuhu), Wuhu 241001, P. R. China.
Chem Soc Rev. 2023 Feb 6;52(3):1129-1154. doi: 10.1039/d2cs00779g.
Two-dimensional metallacycles and three-dimensional metallacages constructed by coordination-driven self-assembly have attracted much attention because they exhibit unique structures and properties and are highly efficient to synthesize. Introduction of switching into supramolecular chemistry systems is a popular strategy, as switching can endow systems with reversible features that are triggered by different stimuli. Through this strategy, novel switchable metallacycles and metallacages were generated, which can be reversibly switched into different stable states with distinct characteristics by external stimuli. Switchable metallacycles and metallacages exhibit versatile structures and reversible properties and are inherently dynamic and respond to artificial signals; thus, these structures have many promising applications in a wide range of fields, such as drug delivery, data processing, pollutant removal, switchable catalysis, smart functional materials, . This review focuses on the design of switchable metallacycles and metallacages, their switching behaviours and mechanisms triggered by external stimuli, and the corresponding structural changes and resultant properties and functions.
由配位驱动自组装构建的二维金属环和三维金属笼由于具有独特的结构和性能，并且合成效率很高，因此引起了广泛关注。将切换引入超分子化学体系是一种流行的策略，因为切换可以赋予系统具有不同刺激触发的可逆特征。通过这种策略，产生了新型的可切换金属环和金属笼，它们可以通过外部刺激可逆地切换到具有不同特征的不同稳定状态。可切换的金属环和金属笼具有多样的结构和可逆的性质，并且固有地是动态的，并对人工信号做出响应；因此，这些结构在广泛的领域中具有许多有前途的应用，例如药物输送、数据处理、污染物去除、可切换催化、智能功能材料等。本综述重点介绍了可切换金属环和金属笼的设计、它们对外界刺激的切换行为和机制，以及相应的结构变化和产生的性质和功能。
