Abstract
We describe herein a concept of optical memory using a photosensitive metal complex, [Cr((-)-tfac)3] ((-)-tfac = (-)-3-trifluoroacetylcamphorato), as a dopant to induce chiral nematic phases. The memory was written by the photo-epimerization of the complex and read-out in terms of circular dichroism spectra. The rewritability of the memory was attempted by using the cycles between liquid crystals and isotropic phases.
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