Formation of Trigons in a Metal-Organic Framework: The Role of Metal-Organic Polyhedron Subunits as Meta-Atoms
Shape control of metal-organic materials in meso- and macroscale has been an important theme due to emerging properties. Especially, chemical etching has been useful to create various forms such as core-shell and hollow crystals in metal-organic frameworks. Here we present a unique chemical etching strategy to create trigonal patterned surfaces in metal-organic frameworks. The mechanism suggests that metal-organic polyhedron subunits serves as meta-atoms, playing a crucial role for formations of trigons on the sur-face. Such patterned surface in porous solids can be utilized in ma-ta-surface applications in the foreseeable future.