Polyslipping: A New Approach to Polyrotaxane-like Assemblies

“Polyslipping”, that is, multiple slipping of dumbbell components into macrocyclic ones having the appropriate size complementarity, of bis-ammonium salt 1 and bis-crown ether 5 in acetone or acetonitrile afforded polyrotaxane-like assembly 6, which quantitatively reverted to the monomers 1 and 5 by dissolving in DMSO.