Effect of intermolecular charge transfer between Ni(II)Pc and CdSeS/ZnS QD on dielectric relaxation mechanism of 5CB nematic liquid crystals in the presence of UV illumination

Kocakülah, Gülsüm; Yıldırım, Mert; Köysal, Oğuz

doi:10.1007/s10854-019-02797-6

Cited by 8 publications

(1 citation statement)

References 37 publications

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“…Improved nematic ordering at the level of a suspension of carbon nanotubes in a nematic LC has been highlighted with the help of DS as well [12]. Moreover, DS enables the determination of the dielectric anisotropic properties of liquid crystalline compounds [13][14][15][16][17][18]. Dielectric anisotropy (∆ε) is a key physical property of LCs that essentially establishes the lower threshold voltages of LC displays [19].…”

Section: Introductionmentioning

confidence: 99%

Dielectric anisotropy in self-assembling MXene-based lyotropic nematic compounds

Olariu,

Vlad-Bubulac,

Filip

et al. 2024

J. Phys. D: Appl. Phys.

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Formation of lyotropic liquid crystal (LC) phase at the level of MXene aqueous dispersions as of self-assembling capacity has been previously successfully reported. However, the influence of electrical external factors was less studied in spite of the fact that understanding the electrical behaviour of 2D based liquid crystal compounds is vital for fostering the development of new innovative applications. Consequently, within the herein paper we are reporting an in-depth evaluation of dielectric properties of liquid crystalline phases in Ti3C2 Mxene aqueous dispersions. Dependence on low voltage of planner ′⟘ to homeotropic ′ǁ orientational transition is emphasized and discussed while the influence of electric field frequency at the level of dielectric anisotropy is assessed in respect to various concentrations of Mxene flakes within the same 2D based compounds. Nonetheless, dielectric spectroscopy highlighted the biphasic nature (containing both nematic and isotopic phases) of the studied aqueous Ti3C2 Mxene inks visible up to 20% Mxene. Above this concentration, pure nematic phase existence in dispersion of high Mxene concentration (>20 wt%) was detected based on evaluation of dielectric permittivity against various voltage values.

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