Intense redox-driven chiroptical switching with a 580 mV hysteresis actuated through reversible dimerization of an azoniahelicene

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Abstract

Electrochemical reduction of an azoniahelicene affords a dimer, accompanied by a strong change in the electronic circular dichroism. The fast dimerisation event leads to a >500 mV shift of the oxidation potential, affording a large area of bistability, where the chiroptical signal only depends on the redox history.

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Brandt, J. R., Pospíšil, L., Bednárová, L., Da Costa, R. C., White, A. J. P., Mori, T., … Fuchter, M. J. (2017). Intense redox-driven chiroptical switching with a 580 mV hysteresis actuated through reversible dimerization of an azoniahelicene. Chemical Communications, 53(65), 9059–9062. https://doi.org/10.1039/c7cc04903j

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