Integrative Self-Sorting: Construction of a Cascade-Stoppered HeteroRotaxane.
W. Jiang, H.D.F. Winkler, C.A. Schalley – 2008
In this Communication, a competing self-sorting system containing benzo-21-crown-7, dibenzo-24-crown-8 and two secondary ammonium salts is constructed, which is then modified to achieve a heteropseudorotaxane with a specific sequence of wheels. With these two systems, we successfully demonstrate the concept of integrative self-sorting, and their relation. Furthermore, based on this self-sorting scheme, a heterorotaxane with an efficient stopper cascade has been synthesized.