Ruthenium-vinylhelicenes: remote metal-based enhancement and redox switching of the chiroptical properties of a helicene core.
Introducing metal-vinyl ruthenium moieties onto [6]helicene results in a significant enhancement of the chiroptical properties due to strong metal-ligand electronic interactions. The electro-active Ru centers allow the achievement of the first purely helicene-based redox-triggered chiroptical switches. A combination of electrochemical, spectroscopic, and theoretical techniques reveals that the helicene moiety is a noninnocent ligand bearing a significant spin density.
Institut des Sciences Chimiques de Rennes, UMR 6226, Campus de Beaulieu, CNRS-Université de Rennes 1, 35042 Rennes Cedex, France.
Emmanuel
E
Anger
Monika
M
Srebro
Nicolas
N
Vanthuyne
Loïc
L
Toupet
Stéphane
S
Rigaut
Christian
C
Roussel
Jochen
J
Autschbach
Jeanne
J
Crassous
Régis
R
Réau