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