Ruthenium-vinylhelicenes: remote metal-based enhancement and redox switching of the chiroptical properties of a helicene core |
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| Authors: | Anger Emmanuel Srebro Monika Vanthuyne Nicolas Toupet Loïc Rigaut Stéphane Roussel Christian Autschbach Jochen Crassous Jeanne Réau Régis |
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| Institution: | Institut des Sciences Chimiques de Rennes, UMR 6226, Institut de Physique de Rennes, UMR 6251, Campus de Beaulieu, CNRS-Université de Rennes 1 , 35042 Rennes Cedex, France. |
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| Abstract: | 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. |
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