The influence of lateral hydroxyl group and molecular flexibility on the mesogenic behaviour of a new homologous series based on thiophene-chalcone: Synthesis, characterization, crystal structure and DFT study

Nakum, Kiran J.; Katariya, Kanubhai D.; Hagar, Mohamed; Jadeja, R.N.

doi:10.1016/j.molstruc.2022.132891

Cited by 12 publications

(2 citation statements)

References 61 publications

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“…15 Till the date, different type of liquid crystalline compound based on chalcone group was reported in the literature with different types of mesogenic properties. [16][17][18][19][20][21] Apart from this, our research group reported two phenyl ring based linear and non-linear single chalcone substituted imidazolium based LCs. 22 These imidazolium based ionic compounds displayed smectic C and nematic type mesogenic properties.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of acrylamide substituted sulfanilamide based calamitic LCs: effect of terminal group on phase behavior

Meena,

Sharma,

Mali

et al. 2024

10.5267/j.ccl

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In the present study, we have prepared two phenyl ring substituted sulfanilamide bearing acrylamide linking groups. The four derivatives (C1-C4) were prepared by changing the left n-alkoxy terminal group. The liquid crystalline properties of the synthesized sulfanilamide-based compounds were investigated using POM and DSC studies. All four materials exhibit nematic liquid crystalline properties during both heating and cooling. They also demonstrate a broad temperature range and thermal stability. Further, we have studied the structure-property relationship to gain a better understanding of the effect of the linking group and variable alkoxy tail group on mesomorphic behavior. The results indicate that thermal stability, mesophase temperature range, and liquid crystalline properties depend on the linking group and variable alkyl chain length.

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Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of acrylamide substituted sulfanilamide based calamitic LCs: effect of terminal group on phase behavior

Meena,

Sharma,

Mali

et al. 2024

10.5267/j.ccl

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“…An organic molecule’s molecular shape generally affects the mesophase stability and temperature ranges it can withstand; even a little alteration in molecular geometry can have a significant impact on mesomorphic behavior [ 42 ].Moreover, the Schiff base (azomethine group) serves as a connecting group within the molecule’s rigid core. The azomethine group maintains molecular linearity despite having a stepped core structure, making the molecule more stable and enabling the evolution of mesophase [ 43 , 44 , 45 , 46 , 47 , 48 ].…”

Section: Introductionmentioning

confidence: 99%

Novel Imidazole Liquid Crystals; Experimental and Computational Approaches

et al. 2022

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The liquid crystalline materials named (E)-4-(2-(4-oxo-5,5-diphenyl-4,5-dihydro-1H-imidazol-2-yl)hydrazineylidene)methyl)phenyl and 4-(alkoxy)benzoate, In, were synthesized and their mesomorphic behaviors were examined. The chemical structures of the produced compounds were confirmed by Fourier-transform infrared spectroscopy (FT-IR), NMR, and elemental analysis. Differential scanning calorimetry (DSC) and polarized optical microscopy were used to investigate the mesomorphic properties of designed heterocyclic derivatives. All the compounds tested had suitable thermal stability and enantiotropic behavior of smectogenic temperature ranges. Furthermore, the enantiotropic smectic C phases were observed to cover all the homologues. Moreover, computational investigations corroborated the experimental findings of the mesomorphic behavior. The reactivity parameters were computed for the derivatives and linked with the experimental data. Theoretical calculations revealed that the polarizability of the studied series increases with the chain length, whereas the HOMO–LUMO energy gap or other reactivity descriptors were less sensitive to the size of the system. On the other hand, the predicted thermodynamic parameters revealed the size dependence of thermal stability of the compounds.

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Imine based Four-Ring Chalcone-Ester liquid Crystals: Synthesis, Characterization, mesomorphic behaviour and DFT approach

Katariya

Nakum

Soni

et al. 2023

Journal of Molecular Liquids

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The influence of lateral hydroxyl group and molecular flexibility on the mesogenic behaviour of a new homologous series based on thiophene-chalcone: Synthesis, characterization, crystal structure and DFT study

Cited by 12 publications

References 61 publications

Synthesis and characterization of acrylamide substituted sulfanilamide based calamitic LCs: effect of terminal group on phase behavior

Synthesis and characterization of acrylamide substituted sulfanilamide based calamitic LCs: effect of terminal group on phase behavior

Novel Imidazole Liquid Crystals; Experimental and Computational Approaches

Imine based Four-Ring Chalcone-Ester liquid Crystals: Synthesis, Characterization, mesomorphic behaviour and DFT approach

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