Structure–property correlation of a hockey stick-shaped compound exhibiting N-SmA-SmCa phase transitions

From the Molecular Structure to Spectroscopic and Material Properties: Computational Investigation of a Bent‐Core Nematic Liquid Crystal

“…[17]. [69][70][71] Very recently, the temperature dependence of the elastic constants was measured for the nematic phase of a number of bent-shaped mesogens, [18][19][20][21][22][23][72][73][74] with results similar to those for A131. For the bend-elastic constant, theoretical predictions are in good agreement with the experimental trend in the temperature region far from the smectic C transition: K 3 < K 1 is found, with K 3 scarcely dependent on temperature.…”

Understanding the distinctive elastic constants in an oxadiazole bent-core nematic liquid crystal

“…In the case of the homologous series of p,p -di-n-alkyl and p,p -din-alkoxy azobenzenes, both K 11 and K 33 become greater with increasing chain length, whereas, the ratio K 33 /K 11 decreases along the series [55] due to an increase in the number of conformations adopted by the flexible chain. In hockey-shaped molecules [59] as well as bent-core systems, the molecular shape and population of conformers can certainly lead to situations where W eff > L (W eff is the effective width of the molecule). Finally, there are several papers that demonstrate that the lower-temperature regimes of bent-core systems include large cybotactic SmC or SmA clusters, which can explain many of the unique features of bent-core nematic systems and which could also lead to a situation where W eff > L. Thus, there are several reasons why one might expect K 11 > K 33 in bent-core systems, so it is not surprising that we and others [16,[19][20][21] report such a relationship.…”

Alignment and Deformation Properties of the Third Type of Hockey Stick‐Shaped Molecules in Vertical Alignment and Fringe‐Field Switching Modes

“…In the first type, the rod‐like mesogens containing two flexible terminal chains: one chain being connected to the para position of one side of the terminal ring and the other to the meta one of the other side . In the second type, the asymmetric bent‐core mesogens contain two terminal chains . In the third type, only the longer arms of the asymmetric bent‐core mesogen possess their own terminal chains.…”

“…According to the geometry of the molecular structures reported in the literatures, the HLC molecules can be classified into three types. [8][9][10][11][12][13][14][15][16][17][18][19][20][21] In the first type, the rod-like mesogens containing two flexible terminal chains: one chain being connected to the para position of one side of the terminal ring and the other to the meta one of the other side. [8][9][10] In the second type, the asymmetric bent-core mesogens contain two terminal chains.…”