Stable near-infrared anionic polymethine dyes: structure, photophysical, and redox properties.
The concept of cyanine has been successfully extended to an anionic heptamethine dye featuring tricyanofuran (TCF) moieties in terms of structure, reactivity, and photophysical properties. Importantly, absorption and emission are red-shifted compared to its classical cationic analog without any cost in terms of thermal stability. In addition to its "cyanine" behavior, this molecule exhibits further redox properties: oxidation and reduction led to the reversible formation of radical species whose absorption is in marked contrast with that of cyanines.
Bouit
Pierre-Antoine
PA
University of Lyon, Laboratoire de Chimie, UMR 5182 CNRS, Ecole Normale Supérieure de Lyon, 46 allée d'Italie, 69007 Lyon, France.
Di Piazza
Emmanuel
E
Rigaut
Stéphane
S
Le Guennic
Boris
B
Aronica
Christophe
C
Toupet
Loïc
L
Andraud
Chantal
C
Maury
Olivier
O
D002232:Carbocyanines / Q000737:chemistry*; D004396:Coloring Agents / Q000737:chemistry*; D005663:Furans / Q000737:chemistry; D007259:Infrared Rays; D010084:Oxidation-Reduction
D002232:Carbocyanines; D004396:Coloring Agents; D005663:Furans