Self‐Assembly of a Two‐Dimensional Bimetallic Coordination Framework and Dynamic Control of Reversible Conversions to Homo‐Metallic Hydrogen‐Bond Arrays

A novel 2D coordination bimetallic framework composed of Cu and Zn is obtained at a Au(111) surface by the supramolecular assembly of Cu and zinc-5,10,15,20-tetra(4-pyridyl)porphyrin molecules (see figure). Suppressing Cu concentration at high temperature transforms the 2D bimetallic frameworks into 2D homo-metallic hydrogen-bond arrays. Enriching the Cu concentration can reverse the structural transformation.