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Azoarenes with Opposite Chiral Configurations: Light-Driven Reversible Handedness Inversion in Self-Organized Helical Superstructures

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  • This work is supported by the Air Force Office of Scientific Research (AFOSR FA9550-09-1-0193 and FA9950-09-0254).

Abstract

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On the other hand: Azoarene compounds with axially chiral binaphthyl units of the same and opposite chiral configurations were doped into achiral liquid crystals (LCs). They were found to efficiently induce self-organized helical superstructures, which could be reversibly tuned by light irradiation using transcis photoisomerization to change the handedness of the helix (see scheme) in LC hosts.

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