Fabrication, morphological investigation and spectral characterization of nano-encapsulated azo dye-doped nematic liquid crystals

Sharifimehr, Mohammad Reza; Ayoubi, Kazem; Mohajerani, Ezeddin

doi:10.1016/j.molliq.2020.113576

Cited by 8 publications

(2 citation statements)

References 66 publications

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“…The MR molecules can be also used for ferroelectric LC photoalignment [19][20][21]. The photoinduced optical anisotropy of photoalignment layer strongly effects the performance of LC devices [22]. The MR dye can be also used in composite LC materials with different nanoparticles [23,24].…”

Section: Introductionmentioning

confidence: 99%

Photo-Induced Anisotropy of Methyl Red Azo Dye in Polymer Film

Kozenkov¹,

Belyaev²,

Чаусов³

2022

Liq. Cryst. and their Appl.

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A photo-induced anisotropy (PIA) of Methyl Red (MR) azo dye embedded in PMMA polymer solid films was investigated by studying dichroic spectra and photo-induced birefringence. The reversible PIA of MR dye was measured in situ during photoactive irradiation process. Photoinduced order increases with the rise of exposure power. It is shown that PIA dark relaxation slows down at higher exposure energy. The MR rotational diffusion was evaluated at different exposure modes. These data are useful for the characterization of Methyl Red azo dye as a liquid crystal photo-aligning material.

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Section: Introductionmentioning

confidence: 99%

Photo-Induced Anisotropy of Methyl Red Azo Dye in Polymer Film

Kozenkov¹,

Belyaev²,

Чаусов³

2022

Liq. Cryst. and their Appl.

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“…Different concentrations of the azo dye methyl red (MR) significantly affect the dielectric properties of PDLC composites and make them suitable for the design of new devices based on PDLCs. , The TL 205-DG7052 red dye composition has a good CR (85.5:1) and a relatively low driving voltage; the optimum dye concentration of 0.007 wt% dispersed orange 25 was improved the PDLC characteristics to T sat = 99.38%, low response time, and minimized hysteresis loss . Azo dyes such as disperse orange 3 and disperse red 1 have been doped into the PDLCs, achieving a minimized transmittance in the OFF-state and an overall improvement in the CR of the device. − Dye-doped PDLC films can set a foundation for decreasing the scattering effect and improving their absorbance, thus improving their electro-optical properties . A dichroic dye (DD)-doped polymer-stabilized optically isotropic chiral LC (named PSOICIC) film is fabricated, which is stable over a large temperature range, and by doping with a high birefringent DD, the electric-field-induced birefringence is increased and the Kerr effect is improved .…”

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confidence: 99%