Lateral substitution in nematic systems

Substitution Effects on the Liquid Crystalline Properties of Thermotropic Liquid Crystals Containing Schiff Base Chalcone Linkages

“…The methyl lateral group on the imine linkage decreases the S C phase stability and this also affects the stability of nematic phase, which results in a reduced N-I range compared to series-B [47].…”

“…In addition, terminal and lateral subtituents also play a vital role in imparting liquid crystallinity to potentially mesogenic compounds [15][16][17][18][19]. The correlation between chemical structure and mesomorphic properties is one of the most important problems in liquid crystals science [20].…”

Polyfunctional intermediates for the preparation of liquid-crystalline and anisotropic materials

“…[30][31][32][33] (B) Lateral substituted p-terphenyls, p-quaterphenyls and p-quinquephenyls (10-17), which, as our investigations have shown [34][35][36][37], are easily formed in a one-stage procedure from the corresponding 3,6-disubstituted cyclohex-2-enones (I.3) (Scheme 7).…”

Sulfur as a Structural Element in Calamitic Liquid Crystals. 2 Terminal, Linking, Axial and Lateral Substitutions. 3 Sulfur-Containing Rings

“…In this case, we can say that the axial NCS or CONCS substitutions work as the lateral ones, which usually reduce the intermolecular interactions and consequently, the clearing points [87]. The position of the axial substituent NCS in the molecular core of liquid crystals plays an important role in their mesomorphic properties: the axial substituent A in the middle of the core gives more significant reduction of the melting and clearing points in comparison with those of the axial substituent B at the terminal position of the core (compounds 10-1, 10-2).…”

“…It can be explained by the largest size of the NCS group among lateral substituents under consideration [4]. Such a large substituent would reduce the intermolecular interactions and destroy the liquid crystal packing in the most significant way [87].…”