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Peculiarities of the Relaxation Behavior of Nematic Liquid Crystal Compositions with Azochromophores and Quantum Dotsстатья
Информация о цитировании статьи получена из
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 23 января 2026 г.
- Авторы: Merekalov A.S., Karpov O.N., Egorov Yu A., Plotnikova A.S., Legkov S.A., Bondarenko G.N., Talroze R.V.
- Журнал: Optics and Spectroscopy (English translation of Optika i Spektroskopiya)
- Том: 133
- Номер: 7-12
- Год издания: 2025
- Издательство: Optical Society of America
- Местоположение издательства: United States
- Первая страница: 52
- Последняя страница: 59
- DOI: 10.1134/s0030400x25700109
- Аннотация: In this work, the relaxation process in mixtures of a nematic liquid crystal matrix with additives of azochromophores and CdSe/ZnS quantum dots is analyzed. The thermally initiated mesophase—isotropic liquid phase transition showed that the activation energy of this process increases almost equally upon the addition of AX-7 or AX-8 in an amount of 10 wt %. However, the photoinduced phase transition into isotropic state, analyzed by dielectric spectroscopy, demonstrates a significant difference when different azochromophores are present in the system as confirmed by activation energy values. This effect is associated with changes in the ratio of trans–cis-isomers. IR-spectroscopy revealed the unexpecting predominance of cis-isomers in AX-7, while trans-isomers are typical for AX-8. This difference was explained by a change in the distribution of electron density in the azochromophore fragments, taking into account the influence of aromatic ring substituents.
- Добавил в систему: Мерекалов Алексей Сократович