Non‐Chiral Smectic Liquid Crystals: Synthesis of Non‐Chiral Smectic Liquid Crystals

Abstract

The synthesis of nonchiral smectic liquid crystals is a broad topic for discussion, however, it can be divided into subsections in two different ways. For example, smectic systems can be split into metallomesogens and nonmetallomesogens, alternatively, they can be divided into materials for (1) mesophase structure elucidation and classification [I], (2) property-structure correlations [2]; and ( 3 ) host systems for ferroelectric and antiferroelectric mixtures. In the following sections template structures used for the synthesis of smectic materials will be described, followed by discussions of the syntheses of materials that have extensive histories in the elucidation of smectic phase structures, and finally of the syntheses of smectogens that are useful in applications.

Nano‐Segregation and Directed Self‐Assembly in the Formation of Functional Liquid Crystals

“…similar to those discussed for DB9NO 2 . Consider the molecular structure of N,N′ ‐terephthalylidene‐bis(4‐ n ‐butylaniline) (TBBA), which is shown in Figure 16 51. TBBA is selected for discussion because it has a symmetrical molecular structure, and it exhibits nematic and smectic A and smectic C phases, where the smectic A phase has its molecules orthogonal to the planes of the layers whereas in the smectic C phase they are tilted…”