Acid/base-controlled supramolecular switch

Owen A. Matthews, Francisco Raymo, J. Fraser Stoddart, Andrew J P White, David J. Williams

28 Scopus citations


A rotaxane-like complex incorporating a hydroquinone-intercepted acyclic polyether chain terminated by tert-butylaniline rings and encircled by cyclobis(paraquat-p-phenylene) self-assembles spontaneously in acetonitrile solution from which it can be crystallized. Protonation of the nitrogen atoms of the guest is accompanied by the complete dissociation of the supramolecular complex into its free components. Addition of a base restores the original equilibrium affording back the rotaxane-like complex.

Original languageEnglish
Pages (from-to)1131-1134
Number of pages4
JournalNew Journal of Chemistry
Issue number11
StatePublished - Nov 1 1998
Externally publishedYes


ASJC Scopus subject areas

  • Chemistry(all)

Cite this

Matthews, O. A., Raymo, F., Stoddart, J. F., White, A. J. P., & Williams, D. J. (1998). Acid/base-controlled supramolecular switch. New Journal of Chemistry, 22(11), 1131-1134.