4.8 Article

Ruthenium-Vinylhelicenes: Remote Metal-Based Enhancement and Redox Switching of the Chiroptical Properties of a Helicene Core

Journal

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Volume 134, Issue 38, Pages 15628-15631

Publisher

AMER CHEMICAL SOC
DOI: 10.1021/ja304424t

Keywords

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Funding

  1. National Science Foundation [CHE 0952253]
  2. Foundation for Polish Science ('START' scholarship)
  3. Polish Ministry of Science and Higher Education ('Mobility Plus' program)
  4. Direct For Mathematical & Physical Scien
  5. Division Of Chemistry [0952253] Funding Source: National Science Foundation

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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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