Stabilisation of a heptamethine cyanine dye by rotaxane encapsulation.
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.
Department of Chemistry, Chemistry Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford, UK OX1 3TA.
C M Simon
CM
Yau
Sofia I
SI
Pascu
Susan A
SA
Odom
John E
JE
Warren
Eric J F
EJ
Klotz
Michael J
MJ
Frampton
Charlotte C
CC
Williams
Veaceslav
V
Coropceanu
Marina K
MK
Kuimova
David
D
Phillips
Stephen
S
Barlow
Jean-Luc
JL
Brédas
Seth R
SR
Marder
Val
V
Millar
Harry L
HL
Anderson