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Columnar mesomorphism from a new luminescent thiazolo[5,4-d]thiazole-based core.
- Source :
-
Liquid Crystals . Jan2021, Vol. 48 Issue 2, p182-189. 8p. - Publication Year :
- 2021
-
Abstract
- Two new mesogenic compounds having a bicyclic aromatic thiazolo[5,4-d]thiazole linked to four 1,3,4-oxadiazol heterocycles were synthesised and their liquid-crystalline properties were investigated. The compounds exhibit enantiotropic hexagonal columnar mesophase with strong homeotropic orientation induced under confinement, and a wide mesophase range. The molecular packing is preserved at room temperature, especially the π-stacking inside the columns, which is essential for good charge carrier transport. They show high thermal stability, blue photoluminescence in solution, and blue-green in thin film. The morphology of spin-coated films is smooth even after thermal annealing, where large molecular-ordered domains were induced, but preserving the photoluminescence quantum yield. All characteristics suggest that this new class of mesogenic molecules is promising for technological applications. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 02678292
- Volume :
- 48
- Issue :
- 2
- Database :
- Academic Search Index
- Journal :
- Liquid Crystals
- Publication Type :
- Academic Journal
- Accession number :
- 148883082
- Full Text :
- https://doi.org/10.1080/02678292.2020.1768602