Post‐Synthetic Modification of Mesoporous Zinc‐Adeninate Framework with Tris(2,2′‐bipyridine) Ruthenium(II) Complex and its Electrochemiluminescence

Herein we report a redox-active metal-organic framework (MOF) via post-synthetic cation exchange with tris(2,2'-biprydine) ruthenium(II) complex (Ru(bpy)(3)(2+)). A porous anionic zinc-adeninate framework (bMOF-100) is spacious enough to easily entrap 2.43 of Ru(bpy)(3)(2+) cations within the mesopore. The encapsulation supported the framework structure preventing any distortion from a rapid solvent evaporation under SEM observation. Ru(bpy)(3)(2+)@bMOF-100 was then immobilized on the surface of glassy carbon electrode, and its electrocatalytic and electrochemiluminescent (ECL) properties were investigated in aqueous and organic solution. Especially, Ru(bpy)(3)(2+)@bMOF-100 showed the excellent electrochemical properties of Ru(bpy)(3)(2+), but gradual decomposition of the MOF structure was observed under electrochemical measurements because of the sluggish oxidation of adeninate ligand.