Chiral nematogen

Note 1 When the type of mesophase formed is known, more precisely qualifying terminology can be used, e.g., nematogen, smectogen and chiral nematogen. 

Having defined the different forms of chiral nematogen structure with regard to the positioning of the chiral moiety relative to the liquid-crystalline core unit, it is now necessary to describe further and more precisely the exact nature of this structural relationship. It has been understood for many years that optical properties, such as helical twist sense and the direction of rotation of plane polarised light, depend intimately on the absolute spatial configuration of the chiral centre, the distance the chiral centre is sep-... 

Figure 5. The relationship between twist sense, parity, and absolute configuration demonstrated for two chiral nematogens.

Figure 6. The general structure of a non-sterol based chiral nematogen.

This entire class of stable, colourless chiral nematogens turned out to be commer-... 

Binary mixture studies involving the chiral nematogens (/f)-2-[(2 -fluoro-4 -pentylbiphenyl-4-carbonyloxy)phenoxy]-... 

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