Lath-shaped mesogens

Finally, the miscibility between difierently shaped mesogens, such as a disk-like phthalocyanine and a lath-shaped perylenetetracarboxidiimide. 

Referring to the nomenclature defined in Table 1.1, we shall encounter mainly one-comb, double-comb, parallel (and biparallel) and network LCPs that exhibit calamitic phases (such as smectic and nematic). Calamitic phases result from mesogens that are lath-shaped. We shall... 

A further variant on the spacer-mesogen linkage follows from the lath shape of typical mesogens. In most comb LCPs the linkage is to the end of the long axis of the mesogen (longitudinal attachment), but connection... 

Figure 3.1 represents the characteristic types of mesogenic molecules. Among them are rods, laths, discs, helices which are more popular for physical investigations and technological applications and also main-chain and side-chain polymers. We may add to this list banana- or bent-shape molecules and dendrimers [4] that recently become very popular. 

Fig. 5.1. Example molecular structures of low molecular weight liquid crystals. From left to right, primary chemical constitutions, low-resolution secondary structures, and lastly the idealized shapes for calamitic (prolate, rod-Uke, or lathe-Uke), nonlinear (discoid-, banana- or boomerang-shaped), and discotic (oblate or disklike) mesogens.

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