62856-44-4Relevant academic research and scientific papers
New fluorescent N-heterocyclic liquid crystals with high birefringence
Jian, Junsheng,Hong, Fengying,Xia, Zhengce,Zhu, Dezhao,Wu, Hongxiang,Liu, Jianhui,Bu, Xiao'e,Cui, Ming,Zeng, Zhuo,Wang, Hui
, (2016)
A new series of tolane-based liquid crystals with different five-membered N-heterocycle as molecular rigid core have been prepared in good yield. All of these new compounds show mesomorphic behaviors, good thermal stability and intrinsic fluorescence nature. The physical and electro-optical properties of these liquid crystal materials were evaluated. Their properties can be adjusted by varying the alkyl/alkoxyl chain or N-heterocycles. Most of the new compounds exhibit high birefringence, and compounds with propyl chain display stronger fluorescence intensity than those with methoxyl. These tolane-based N-heterocyclic liquid crystals may be used as new high birefringence fluorescent liquid crystal materials.
Contact by reduction manufacturing method (by machine translation)
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Paragraph 0073; 0074, (2017/01/05)
PROBLEM TO BE SOLVED: dielectric constant anisotropy (Δε) of a large negative value, low viscosity, and refractive index anisotropy (Δn) is useful for obtaining a large liquid crystal compd. synthesizable intermediate, and its production method using the same. SOLUTION: connected-as-CH = CH-or-C≡C compound, for example, expressed by the formula synthetic intermediate (i-2) 6-bromo-2-3 is adjusted by a process from phenolic, further contact by hydrogen reduction, is represented by a liquid crystal compd. (ii-2). Selected drawing: no (by machine translation)
