Macrocyclic polyethers incorporating resorcinol residues as templates for cyclobis(paraquat-p-phenylene) in the self-assembly of [2]catenanes

David B. Amabilino, Peter R. Ashton, J. Fraser Stoddart

Research output: Contribution to journalArticlepeer-review

10 Scopus citations

Abstract

The self-assembly of [2]catenanes incorporating cyclobis(paraquat-p-phenylene) and either bis(metaphenylene)-32-crown-10 or tris(metaphenylene)-48-crown-15 has been achieved. The dynamic processes associated with the relative motions of the two rings have been studied by variable temperature 1H NMR spectroscopy. Both [2]catenanes display rapid relative movements of the two components, associated with free energies of activation in the region 12–14 kcal mol-1 for different processes. The resorcinol residues of the macrocyclic polyethers are bound in the cavity of the cyclophane by π-π stacking, electrostatic interactions, and T-type hydrogen bonding.

Original languageEnglish (US)
Pages (from-to)5-8
Number of pages4
JournalSupramolecular Chemistry
Volume5
Issue number1
DOIs
StatePublished - May 1 1995

ASJC Scopus subject areas

  • Chemistry(all)

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