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Chirality issues and interesting properties of achiral and racemic materials with bent molecular structures.
Hird, Michael; Raoul, Yann; Goodby, John W.; Gleeson, Helen
Ferroelectrics. 2004;309:95-101.
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Abstract
Spontaneous symmetry breaking in achiral and racemic materials is reviewed in terms of the so-called banana-shaped liq. crystal materials. Some novel results are reported in the area of conventional liq. crystal phases generated by achiral, bent-shaped mol. architectures where the smectic C phase is seen to consist of domains of opposite handedness in equal proportion. Moreover, an analogous racemic material was found to generate a liq. crystal phase that showed only one handedness. Other materials based on the same bent-core architecture were found to generate a nematic phase that also consists of domains of opposite handedness in equal proportion. This nematic phase was also found not to show any areas of homeotropic alignment. [on SciFinder (R)]
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