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Effect of photoaligning azo dye structure on liquid crystal anchoring energy
Author(s) -
Barabanova Natalya N.,
Belyaev Victor V.,
Bogdanov Dmitriy L.,
Chigrinov Vladimir G.,
Dadivanyan Artem K.,
Nazarov Artem P.,
Noah Olga V.
Publication year - 2015
Publication title -
journal of the society for information display
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.578
H-Index - 52
eISSN - 1938-3657
pISSN - 1071-0922
DOI - 10.1002/jsid.403
Subject(s) - anchoring , liquid crystal , polarizability , materials science , intermolecular force , polar , hydrogen bond , molecule , chemical physics , crystal (programming language) , chemical polarity , chemistry , organic chemistry , optoelectronics , physics , structural engineering , astronomy , computer science , engineering , programming language
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 crystal — azo dye system — is shown.