Influence of chemical moieties and the flexible chain for the tilted smectic phases in linear hydrogen bonded liquid crystals with Schiff based pyridene derivatives

Thermal properties of liquid crystal hexylbenzoic acid/octyloxybenzoic acid mixture

“…The results of the thermal analyses, the phase transition temperatures of crystalline -nematic, T CrN , and nematic -isotropic, T NI , and enthalpies, ΔH CrN , ΔH NI , of those phase transitions were presented in Table 1. As seen in Table 1, the values of phase transition temperatures and enthalpies obtained in our experiments are approximately similar to the values reported in literatures [8][9][10][11]. Figure 1.b shows the dependence of phase transition temperature on the heating rate for the 6BA/8OBA liquid crystal mixture.…”

Induced Smectic-A phase at low temperatures through self-assembly

“…These observations confirm the formation of an imine group (Schiff's base) in the PyB10A moiety. Similarly, the FTIR spectra for the other two proton acceptors viz., PyB14A and PyB16A are recorded and are found to be in agreement with the reported [10,11] data.…”

“…Kato and co-workers also have shown that the intermolecular HB between 4-substituted benzoic acids and substituted pyridine derivatives can stabilize [4] or induce the mesomorphism. In continuation of our earlier work [5][6][7][8][9][10][11][12] on supramolecular liquid…”

“…The intermolecular HBLCs with PyB14A (as proton acceptor) and 4-n-alkoxybenzoic acids (nOBAs' as proton donors) were prepared [11] and studied. Interestingly, a titled SmF phase is induced even in the lower homologues.…”

Study of phase behavior in a system of linear hydrogen-bonded carboxylic acid homologues

“…Diffraction patterns were obtained for pure compounds I, II, and samples 2,4,6,8,9,11,12,14, and 16 (see Table 1). The samples 2 and 4 containing I to 25 mol% possess the same structure as the original p-n-undecloxybenzoic acid (II) (Figure 5(A)).…”