Stabilisation of a heptamethine cyanine dye by rotaxane encapsulation

C. M.Simon Yau, Sofia I. Pascu, Susan A. Odom, John E. Warren, Eric J.F. Klotz, Michael J. Frampton, Charlotte C. Williams, Veaceslav Coropceanu, Marina K. Kuimova, David Phillips, Stephen Barlow, Jean Luc Brédas, Seth R. Marder, Val Millar, Harry L. Anderson

Research output: Contribution to journalArticlepeer-review

74 Scopus citations


The crystal structure of a cyanine dye rotaxane shows that the cyclodextrin is tightly threaded round the polymethine bridge of the dye; encapsulation dramatically increases the kinetic chemical stability of the radicals formed on oxidation and reduction of the dye, making it possible to observe the rotaxane radical dication by ESR and UV-vis-NIR spectroscopy.

Original languageEnglish (US)
Pages (from-to)2897-2899
Number of pages3
JournalChemical Communications
Issue number25
StatePublished - 2008
Externally publishedYes

ASJC Scopus subject areas

  • Catalysis
  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • General Chemistry
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Materials Chemistry


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