Chapter Five - Metallosupramolecular Complexes Based on Pyrogallol[4]arenes.

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 (M₇L₂ and M₈L₂) and hexameric (M₁₂L₆ and M₂₄L₆) 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. [ABSTRACT FROM AUTHOR]