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

Zhenlin Zhang Key Laboratory of Metastable Materials Science & Technology, Hebei, Yanshan University, College of Materials Science & Engineering, Yanshan University, Qinhuangdao, 066004, People's Republic of China; Beijing National Laboratory for Molecular Sciences, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, China; College of Engineering, Peking University, Beijing, 100871, People's Republic of China

Lanying Zhang Beijing National Laboratory for Molecular Sciences, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, China; College of Engineering, Peking University, Beijing, 100871, People's Republic of China

Xiaolin Guan Beijing National Laboratory for Molecular Sciences, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, China; College of Engineering, Peking University, Beijing, 100871, People's Republic of China

Zhihao Shen Beijing National Laboratory for Molecular Sciences, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, China; College of Engineering, Peking University, Beijing, 100871, People's Republic of ChinaCorrespondence[email protected]

Xiaofang Chen Beijing National Laboratory for Molecular Sciences, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, China; College of Engineering, Peking University, Beijing, 100871, People's Republic of China

Guangzhong Xing Key Laboratory of Metastable Materials Science & Technology, Hebei, Yanshan University, College of Materials Science & Engineering, Yanshan University, Qinhuangdao, 066004, People's Republic of ChinaCorrespondence[email protected]

Xinghe Fan Beijing National Laboratory for Molecular Sciences, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, China; College of Engineering, Peking University, Beijing, 100871, People's Republic of ChinaCorrespondence[email protected]

Qifeng Zhou Beijing National Laboratory for Molecular Sciences, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, China; College of Engineering, Peking University, Beijing, 100871, People's Republic of ChinaCorrespondence[email protected]

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Abstract

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.

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Acknowledgement

This research was supported by the National Natural Science Foundation of China (Grant nos: 20634010, 20874002, 20874003 and 20974002).

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

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

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