Antiferroelectric liquid crystals derived from a new optically active (R)-3-ethylmercapto-2-methylpropionic acid |
| |
| Authors: | S L Wu F K Huang B J Uang W J Tsai J J Liang |
| |
| Institution: |
a Department of Chemical Engineering, Tatung Institute of Technology, Taipei, Taiwan
b Department of Chemistry, National Tsinhua University, Hsinchu, Taiwan
c Department of Opto-electronics, Chunghwa Picture Tubes, Ltd., Taoyuan, Taiwan |
| |
| Abstract: | A new optically active (R)-3-ethylmercapto-2-methylpropionic acid has been synthesized using D(-)—2,10-camphorsultam as a chiral auxiliary. The optical purity of the acid obtained was greater than 98 per cent. Its derivatives, (R)-4-(3-ethylmercapto-2-methylpropionyl)phenyl 4'-alkoxybiphenyl-4-carboxylates (EMMPPmBC; m = 7-16), have been prepared for the investigation of liquid crystalline properties as a function of peripheral alkyl chain length. Optical studies showed that all members exhibited an antiferroelectric S*cA phase. The results also indicate that a lengthened alkyl chain length is favoured for ScA* phase formation. |
| |
| Keywords: | |
| 本文献已被 InformaWorld 等数据库收录！ |
|
