Effect of terminal metamers and homologous with imine and ester groups on mesomorphism and their DFT study

Vyas, Akshay; Koshti, Rohit R.; Patel, H. N.

doi:10.1080/02678292.2022.2028312

Cited by 3 publications

(2 citation statements)

References 46 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[16][17][18][19][20] This change in the geometry can be the change in the flexible alkyl/alkoxy chain, change in the rigid core, changing the linkage group and the terminal group. [21] Structural isomers, compounds with identical chemical formula but different arrangements of atoms. [22] With the deepening of LC research, isomerism can appear as an effective molecular tool to regulate the physical properties of liquid crystals, and in each isomeric series, different molecular structures may lead to changes in their important properties.…”

Section: Introductionmentioning

confidence: 99%

“…Thus, a very slight change in the molecular geometry brings up a significant change in its mesomorphic properties [16–20] . This change in the geometry can be the change in the flexible alkyl/alkoxy chain, change in the rigid core, changing the linkage group and the terminal group [21] . Structural isomers, compounds with identical chemical formula but different arrangements of atoms [22] .…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Effect of Functional Group Positional Isomerization on the Mesomorphic Properties and Thermal Stability of Biphenyl Ester Liquid Crystals

Yang,

Zhu,

Liu

et al. 2024

ChemistrySelect

View full text Add to dashboard Cite

Intermolecular interactions and molecular configurations are of great significance for the formation of liquid crystals. During this study, a series of isomer compounds with biphenyl esters as rigid cores were synthesized, and their mesomorphic properties and thermal stability were investigated. Based on the same rigid core, compounds heptyl 4′‐methoxy‐[1,1′‐biphenyl]‐4‐carboxylate (1OBE7), propyl 4′‐(pentyloxy)‐[1,1′‐biphenyl]‐4‐carboxylate (5OBE3), ethyl 4′‐(hexyloxy)‐[1,1′‐biphenyl]‐4‐carboxylate (6OBE2) and methyl 4′‐(heptyloxy)‐[1,1′‐biphenyl]‐4‐carboxylate (7OBE1) have no mesophase, while compounds hexyl 4′‐ethoxy‐[1,1′‐biphenyl]‐4‐carboxylate (2OBE6), pentyl 4′‐propoxy‐[1,1′‐biphenyl]‐4‐carboxylate (3OBE5) and butyl 4′‐butoxy‐[1,1′‐biphenyl]‐4‐carboxylate (4OBE4) have multiple smectic mesophases, whereas the production of the smectic mesophase is due to the microphase separation between aromatic cores and the alkyl chains. Compound 3OBE5 exhibiting good thermal stability (The value of T5% is 258.3 °C). In addition, with the right shift of the functional group position, compound 4OBE4 formed the widest smectic mesophase. The results show that the mesophase properties and thermal stability of liquid crystals are related to the position of the functional group.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%