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

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 cos2φ 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. © 2018 Society for Information Display

Авторы
Dadivanyan A.K.1 , Nazarov A.P.1 , Barabanova N.N.1 , Belyaev V.V. 1, 2 , Gevorkyan E.V.1 , Bogdanov D.L.1 , Borisenko O.V.1 , Chigrinov V.G.3
Редакторы
-
Издательство
Wiley-Blackwell Publishing Ltd
Номер выпуска
8
Язык
Английский
Страницы
477-482
Статус
Опубликовано
Подразделение
-
Номер
-
Том
26
Год
2018
Организации
  • 1 Moscow Region State University, Moscow, 105005, Russian Federation
  • 2 RUDN University (Peoples' Friendship University of Russia), Moscow, 117198, Russian Federation
  • 3 Hong Kong University of Science and Technology, Hong Kong
Ключевые слова
cooperative orientation; dimerization; dyes; liquid crystal displays; photoorientation; polarizability
Дата создания
19.10.2018
Дата изменения
19.10.2018
Постоянная ссылка
https://repository.rudn.ru/ru/records/article/record/6494/