Abstract
The behaviour of novel 3-oxy benzanthrone derivatives of intense fluorescence emission in liquid crystalline media has been studied with regard to their potential for display application. The optical properties of the dyes were examined both in organic solvents, nematic liquid crystal (LC) and polymer film. The influence of the dyes upon the phase transition temperatures and the electro-optical properties of LC in dye/LC systems was investigated in surface-stabilised display cells. The dichroism D(λ) and the orientational order parameters SA and SF of the dyes in LC were determined from absorption and fluorescence anisotropy. The effect of a polymer component added to the dye/LC systems upon the transition temperatures of LC was established.
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