Acid/base controllable complexation of a triptycene-derived macrotricyclic host and protonated 4,4′-bipyridinium/pyridinium salts†
Abstract
A new acid/base controllable host–guest system based on a triptycene-derived macrotricyclic host and protonated 4,4′-bipyridinium/pyridinium salts was developed. Moreover, the competition complexation process between the host and two different kinds of 4,4′-bipyridinium salts could also be chemically controlled by acid and base.