Distribution of Dye and Mesogen Molecules Orientation in Photoaligning Layer vs. Aperture of Polarized Light Beam

Barabanova, N. N.; Belyaev, V. V.; Bogdanov, D. L.; Bugrimov, A. L.; Chigrinov, Vladimir G.; Dadivanyan, A. K.; Rodionova, Ye A.

doi:10.1080/15421406.2014.918311

Cited by 6 publications

(7 citation statements)

References 5 publications

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“…К наиболее перспективным методам полу-чения ориентированных ЖК относится их ориен-тирование в системах ЖК-краситель с помощью светового или лазерного излучения [2][3][4][5][6][7][8][9][10][11][12][13]. Этот эффект называется фотоориентацией.…”

Section: unclassified

Effect of Azo Dyes Molecules Dimerization on Properties of LC – Dye Systems Under Laser Irradiation

Barabanova¹,

Belyaev²,

Bogdanov³

et al. 2015

Liq. Cryst. and their Appl.

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Effect of Azo Dyes Molecules Dimerization on Properties of LC – Dye Systems Under Laser Irradiation

Barabanova¹,

Belyaev²,

Bogdanov³

et al. 2015

Liq. Cryst. and their Appl.

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“…It is possible to make 2D distribution of the pretilt angle for stereoscopic devices and other applications. Different to date applications of this effect for displays, optoelectronics, and photonics devices are presented in previous studies . Finally, this technology allows enhancement of LC display (LCD) contrast, viewing angle range, speed of response, and appearance of new LCD functions.…”

Section: Introductionmentioning

confidence: 99%

“…The electric transition dipole moment in the dye molecules is directed along the direction of the largest polarizability. The dye molecules form dimers; therefore, the direction of the largest polarizability can form some noticeable angle with the molecule's transition moment …”

Section: Introductionmentioning

confidence: 99%

“…Different to date applications of this effect for displays, optoelectronics, and photonics devices are presented in previous studies. [12][13][14][15][16][17][18][19] Finally, this technology allows enhancement of LC display (LCD) contrast, viewing angle range, speed of response, and appearance of new LCD functions.…”

Section: Introductionmentioning

confidence: 99%

“…The dye molecules form dimers 26,27 ; therefore, the direction of the largest polarizability can form some noticeable angle with the molecule's transition moment. 12,13 Problem of intensive light influence on the dyes' dimers as well as the single molecule performances in the photoalignment process is of special interest for both optics and display technology because of correlation of the azo dye dimer structure with both polar and azimuthal anchoring energy values. 11,23,24 The present work is devoted to the study of the orientation of the dye molecules under action of the intensive light (laser) radiation.…”

Section: Introductionmentioning

confidence: 99%

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Relation between dichroism of photoalignment azo dyes and their orientation under light wave field

et al. 2018

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To date, azo dyes are widely used for liquid crystal photoalignment in flat panel displays. The relation of dichroism of azo dyes with their orientation under intensive light wave field is considered. Values of a truecos2φ¯ parameter, which characterizes orientation order of both molecules and dimers, were obtained as well as energy of their orientation process. Number of cooperatively oriented dye molecules was estimated. The angles distribution functions for different dimers were derived. Dipole electrical transition moments directed on angles close to 90° to the direction of maximal polarizability of dimers were revealed.

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Effect of photoaligning azo dye structure on liquid crystal anchoring energy

Barabanova

Belyaev

Bogdanov

et al. 2015

Jnl Soc Info Display

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A method of controlling anchoring energy of surface interaction of liquid crystal photoaligning substances is considered to enhance the liquid crystal display performances. An important parameter of the dye's molecular structure that determines the ratio of polar and azimuthal anchoring energy is the ability to form dimers. The values of dimerization thermodynamic potentials have been found. The probability of the formation of dye molecules dimers is evaluated. The bonds conjugation transfer via intermolecular hydrogen bond is revealed, and anisotropy of polarizability of the hydrogen bond is evaluated. The effect of dimerization on polar and azimuthal anchoring energy of liquid crystalazo dye systemis shown.

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Distribution of Dye and Mesogen Molecules Orientation in Photoaligning Layer vs. Aperture of Polarized Light Beam

Cited by 6 publications

References 5 publications

Effect of Azo Dyes Molecules Dimerization on Properties of LC – Dye Systems Under Laser Irradiation

Effect of Azo Dyes Molecules Dimerization on Properties of LC – Dye Systems Under Laser Irradiation

Relation between dichroism of photoalignment azo dyes and their orientation under light wave field

Effect of photoaligning azo dye structure on liquid crystal anchoring energy

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