Doping cholesteric liquid crystals with photo-responsive molecules enables controlling the colour and polarisation of the light they reflect. However, accelerating the rate of relaxation of these photo-controllable liquid crystals remains challenging. Here we show that the relaxation rate of the cholesteric helix is fully determined by helix inversion of the molecular dopants.
S. J. Aßhoff, S. Iamsaard, A. Bosco, J. J. L. M. Cornelissen, B. L. Feringa and N. Katsonis, Chem. Commun., 2013, 49, 4256 DOI: 10.1039/C2CC37161H
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