Experimental investigation on the effect of mesogenic ratio in hydrogen-bonded liquid crystal complexes

Sundaram, S.; Subhasri, P.; Vasanthi, T.; Senthil, T.S.; Jayaprakasam, R.; Vijayakumar, V. N.

doi:10.1080/01932691.2017.1283514

Cited by 5 publications

(1 citation statement)

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“…Different properties LCs' are needed for diverse applications areas. For these reasons, the required enhanced properties of liquid crystals are obtained by synthesizing a new liquid crystals [8,9] and/or a mixture of two or more different liquid crystals [10][11][12] and/or using polymer [13][14][15], nanoparticles [16][17][18][19] and dyes [20,21] and/or using at least two of them to reveal their LC behavior [22][23][24]. Among all of them, NPs are very important to obtain liquid crystals having different physical properties.…”

Section: Introductionmentioning

confidence: 99%

Thermal and electro-optic properties of graphene oxide-doped hexylcyanobiphenyl liquid crystal

2018

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Hexylcyanobiphenyl liquid crystal was doped with graphene oxide at ratios %0.25GO, %0.5GO, %1GO and %2GO, and the change in physical properties of pristine and the doped liquid crystals has been investigated. The phase transitions of prepared samples were studied by differential scanning calorimeter and polarized optical microscopy. The differential scanning calorimeter and polarized optical microscopy results are in good agreement when examining the nematic-isotropic liquid phase transition temperatures of the hexylcyanobiphenyl. The liquid crystal texture images obtained with polarized optical microscopy reveals that thermal stability of sample changed with graphene oxide concentration, i.e., increased with graphene oxide concentration. Impedance, capacitance, conductivity and real and imaginary dielectric constants of the pure and doped liquid crystals were obtained depending on frequency and voltage at the room temperature by using impedance analyzer. These electrical properties of the pure and the graphene oxide-doped samples showed an increase with increasing the graphene oxide ratio. The voltage-dependent light transmittance experiment revealed that threshold voltage of LC cells decreased for %0.25GO-and % 1GO-dispersed samples, but it was increased at %0.5GO-and %2GO-dispersed samples.

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