Orientation of Dyes in Liquid Crystalline Media

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Abstract
These two papers form part of a research project investigating the effect of dye orientation in liquid crystalline media. The first paper describes briefly the principles underlying the development of present–day liquid crystal displays, and the second describes a method used for the quantitative investigation of the efficiency of such media in orienting dye molecules (order parameter) in relation to the chemical structure of the dye and the effects of solvent orientation and polarity on absorbance and colour. The data obtained should permit choices of dye to be made to improve visibility and contrast in current liquid crystal display systems.

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