Citation: Hai Quan Zhang, Wen Ke Liu, Li Cheng Zhao, Wei Huang, Shuai Zhang, Ying Li, Huai Yang. Helical twisting properties of new chiral dopants with double (S)-1,2-propanediol units for nematic liquid crystals[J]. Chinese Chemical Letters, ;2010, 21(2): 139-142. doi: 10.1016/j.cclet.2009.09.007 shu

Helical twisting properties of new chiral dopants with double (S)-1,2-propanediol units for nematic liquid crystals

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

Received Date: 5 June 2009

Fund Project: Financial support from the National Science Foundation (No. 20674005), the Flat-Panel Display Special Project of China 863 Plan (No. 2008AA03A318) and Projects of Chinese National Science and Technology Tackling Key Problems (No. 2007BAE31B02).

A novel series of chiral dopants synthesized from(S)-1,2-propanediol and mesogenic carboxylic acids were characterized by FT-IR,¹H NMR,elemental analysis and their helical twisting properties were investigated by doping the chiral dopants into a nematic liquid crystal host(SLC-1717).The results show that,the helical pitch of N^*-LC mixture exhibited a terminal alkyl chain length dependence and the molecular twisting power β also exhibited a temperature dependence(increasing β with increasing temperature).
- Chiral dopants,
- Chiral nematic,
- Pitch,
- Molecular twisting power
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