Stabilisation of a heptamethine cyanine dye by rotaxane encapsulation

Literature Information

Publication Date 2008-04-22
DOI 10.1039/B802728E
Impact Factor 6.222
Authors

C. M. Simon Yau, 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


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Abstract

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.

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