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American Chemical Society, Journal of the American Chemical Society, 38(134), p. 15628-15631, 2012

DOI: 10.1021/ja304424t

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Ruthenium-vinylhelicenes: remote metal-based enhancement and redox switching of the chiroptical properties of a helicene core.

Journal article published in 2012 by Emmanuel Anger, Monika Srebro ORCID, Nicolas Vanthuyne, Loïc Toupet, Stéphane Rigaut, Christian Roussel, Jochen Autschbach ORCID, Jeanne Crassous, Régis Réau
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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.