Metallosupramolecular Complexes Based on Pyrogallol[4]arenes

Abstract Novel metal-organic nanocapsules have shown great potential in various applications ranging from drug delivery, sensing, gas adsorption/separation, and catalysis. Herein, we provide a brief introduction of pyrogallol[4]arene-based dimeric (M 7 L 2 and M 8 L 2 ) and hexameric (M 12 L 6 and M 24 L 6 ) metal-organic nanocapsules. In addition, hierarchical assemblies using dimeric/hexameric nanocapsules as building blocks are introduced. The strategies of direct linking, addition of a bridging linker, and dual function of C -propan-3-ol-pyrogallol[4]arene have been employed to connect these nanocapsules into supramolecular superstructures. In addition, the solution-phase studies of metallopyrogallol[4]arene complexes showing solution-phase stability, rearrangement of nanoassemblies, and magnetic behavior of these nanocapsules are presented.