Citation: Yu-Zhen Zhao, Dong Wang, Ze-Min He, Gang Chen, Lan-Ying Zhang, Hai-Quan Zhang, Huai Yang. Naphthylethyne based liquid crystals with high birefringence and characteristics of selective reflection[J]. Chinese Chemical Letters, ;2015, 26(6): 785-789. doi: 10.1016/j.cclet.2015.03.023 shu

Naphthylethyne based liquid crystals with high birefringence and characteristics of selective reflection

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a State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China;
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b Department of Materials Science and Engineering, College of Engineering, Peking University, Beijing 100871, China;
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c Department of Materials Physics and Chemistry, University of Science and Technology Beijing, Beijing 100083, China

Corresponding author: Hai-Quan Zhang, Huai Yang,
Received Date: 14 January 2015
Available Online: 12 March 2015
Fund Project: the National Science Foundation of China (No. 51173155) (No. 2013DFB50340) the Major Project of Beijing Science & Technology Program (No. Z121100006512002) (No. 51173155) the National Natural Science Foundation of China (No. 51103010) (No. Z121100006512002) and the Doctoral Fund of Chinese Ministry of Education (No. 20120001130005). (No. 51103010)

A series of high birefringence liquid crystalline molecules with cyano, isothiocyanato and trifluoromethyl terminal compounds based on naphthylethyne core was successfully synthesized and characterized. The molecular structures of the intermediates and resulting compounds were confirmed by Fourier transform infrared (FT-IR), nuclear magnetic resonance (NMR), mass spectrometry (MS), and elemental analysis (EA). Their thermal stability, transition temperatures, and phase sequences were investigated by simultaneous thermal analyzer polarized (STA), optical microscopy (POM) and differential scanning calorimetry (DSC). The birefringence was measured by using an Abbe refractometer. In addition, the selective reflection characteristics with naphthylethyne compounds were also studied.
- Liquid crystal,
- Naphthylethyne,
- Birefringence,
- Selective reflection
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沈阳化工大学材料科学与工程学院沈阳 110142