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Photosensitive bent-core liquid crystals based on methyl substituted 3-hydroxybenzoic acid.
- 1.0478803 - FZÚ 2018 RIV GB eng J - Journal Article
Kohout, M. - Alaasar, M. - Poryvai, A. - Novotná, Vladimíra - Poppe, S. - Tschierske, C. - Svoboda, J.
Photosensitive bent-core liquid crystals based on methyl substituted 3-hydroxybenzoic acid.
RSC Advances. Roč. 7, č. 57 (2017), s. 35805-35813. E-ISSN 2046-2069
R&D Projects: GA ČR GA16-12150S
Institutional support: RVO:68378271
Keywords : liquid crystals * photosensitivity * bent-core liquid crystals * 3-hydroxybenzoic acid
OECD category: Nano-materials (production and properties)
Impact factor: 2.936, year: 2017
Photosensitive liquid crystals are of contemporary interest not only from the scientific point of view but also for various applications. Herein we report the first photosensitive materials based on laterally substituted 3-hydroxybenzoic acid. We show that the number and position of azo units with respect to the lateral substitution on the molecular core significantly influences mesomorphic properties of the materials. Based on the position of the substituent, either non-polar or polar antiferroelectric smectic C phases are formed. The optimum combination of both the structural elements results in an achiral material which shows a broad polymorphism and exhibits a room temperature stable dark conglomerate phase with macroscopically chiral domains.
Permanent Link: http://hdl.handle.net/11104/0274872
Number of the records: 1