Issue 25, 2008
From the journal:

Chemical Communications

Stabilisation of a heptamethine cyanine dye by rotaxane encapsulation†

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

* Corresponding authors

a Department of Chemistry, Chemistry Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford, UK
E-mail: harry.anderson@chem.ox.ac.uk
Fax: +44 1865 285002
Tel: +44 1865 275704

b Department of Chemistry, University of Bath, Bath, UK

c School of Chemistry and Biochemistry and Center for Organic Photonics and Electronics, Georgia Institute of Technology, Atlanta, Georgia, USA

d Synchrotron Radiation Source, Daresbury Laboratory, Warrington, UK

e Chemistry Department, Imperial College London, Exhibition Road, UK

f GE Healthcare, The Maynard Centre, Whitchurch, Cardiff, UK

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.

Graphical abstract: Stabilisation of a heptamethine cyanine dye by rotaxane encapsulation

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Article information

DOI
https://doi.org/10.1039/B802728E
Article type
Communication
Submitted
18 feb 2008
Accepted
18 mar 2008
First published
22 apr 2008

Chem. Commun., 2008, 2897-2899

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Stabilisation of a heptamethine cyanine dye by rotaxane encapsulation

C. M. S. Yau, S. I. Pascu, S. A. Odom, J. E. Warren, E. J. F. Klotz, M. J. Frampton, C. C. Williams, V. Coropceanu, M. K. Kuimova, D. Phillips, S. Barlow, J. Brédas, S. R. Marder, V. Millar and H. L. Anderson, Chem. Commun., 2008, 2897 DOI: 10.1039/B802728E

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