Synthesis and properties of highly birefringent liquid crystalline materials: 2,5-bis(5-alkyl-2-butadinylthiophene-yl) styrene monomers

In order to obtain liquid crystals with high birefringence (Δn), a series of new liquid crystals monomers incorporating styrene, a 2,5-disubstituted thiophene ring and diacetylenes, which were highly conjugated along the molecular long axis, were synthesized. Their physical properties were evaluated...

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Bibliographic Details
Published in:Liquid crystals 2010-01, Vol.37 (1), p.69-76
Main Authors: Zhang, Zhenlin, Zhang, Lanying, Guan, Xiaolin, Shen, Zhihao, Chen, Xiaofang, Xing, Guangzhong, Fan, Xinghe, Zhou, Qifeng
Format: Article
Language:English
Subjects:
Birefringence
Chemical synthesis
Displays
high birefringence
Liquid crystal displays
Liquid crystal polymers
Liquid crystals
Materials research
Molecular structure
Monomers
Physical properties
Steering
styrene monomer
Styrenes
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Summary:In order to obtain liquid crystals with high birefringence (Δn), a series of new liquid crystals monomers incorporating styrene, a 2,5-disubstituted thiophene ring and diacetylenes, which were highly conjugated along the molecular long axis, were synthesized. Their physical properties were evaluated. As expected, they exhibited high Δn values of 0.4-0.7 and a low melting point and were of potential use for polymer-dispersed liquid crystal displays (PDLCDs), cholesteric displays and laser beam steering applications.
ISSN:0267-8292
1366-5855
DOI:10.1080/02678290903370272