Self-sorting of porous Cu₄L₂L₂ metal-organic cages composed of isomerisable ligands

We report the self-sorting of a dynamic combinatorial library (DCL) of metal-organic cages composed of a rotationally isomerisable ligand. Convergence of the DCL occurs upon crystallisation and leads to low-symmetry Cu4L2L '(2) cages that display differing porosities based on their overall shape and ligand configuration.