Proton and electron transfer control of the position of cucurbit[n]uril wheels in pseudorotaxanesn

Vladimir Sindelar, Serena Silvi, Samantha E. Parker, David Sobransingh, Angel E. Kaifer

Research output: Contribution to journalArticle

90 Scopus citations

Abstract

This paper presents an overview of recent work on the binding interactions between a series of 4,4′-bipyridinium (viologen) derivatives and the hosts cucurbit[6]uril (CB6) and cucurbit[7]uril (CB7), which give rise to stable 'wheel-on-an-axle' inclusion complexes (pseudorotaxanes) in aqueous solution. The carboxylic acid termini on the pseudorotaxane axle can be used as handles to control-via proton transfer reactions - the relative position of the CB wheel along the axle. We also report on a different type of pseudorotaxane in which the reversible oxidation of the axle's ferrocenyl end groups leads to controlled displacement of the CB7 wheel.

Original languageEnglish (US)
Pages (from-to)694-701
Number of pages8
JournalAdvanced Functional Materials
Volume17
Issue number5
DOIs
StatePublished - Mar 23 2007

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics

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