Selective Formation of a Single Atropisomer of meso–meso‐Linked Zn^II Diporphyrin through Supramolecular Self‐Assembly

Abstract

One‐way atropisomerism: meso‐(4‐Butoxypyrid‐3‐yl)‐substituted Zn^II porphyrins self‐assemble to form zigzag‐shaped cyclic hexamers, whereas the meso–meso‐linked Zn^II diporphyrins 1 undergo self‐sorting self‐assembly to form different assemblies. Upon heating, entropically driven one‐way atropisomerism to 1_in−in has been achieved through fragmentary reconstitution of supramolecular aggregates.