Antiferroelectric liquid crystals derived from a new optically active (R)-3-ethylmercapto-2-methylpropionic acid
- 1 May 1995
- journal article
- research article
- Published by Taylor & Francis in Liquid Crystals
- Vol. 18 (5) , 715-721
- https://doi.org/10.1080/02678299508036681
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
This publication has 21 references indexed in Scilit:
- Tristable Operation of Antiferroelectric Liquid Crystal Light Valves Optically Addressed Using Amorphous Silicon PhotosensorJapanese Journal of Applied Physics, 1993
- Optically Addressed Spatial Light Modulator Using an Antiferroelectric Liquid Crystal Doped with AzobenzeneJapanese Journal of Applied Physics, 1993
- Effect of size of the lateral substituent at the chiral centre on the stability of some chiral smectic liquid-crystalline phases. The ‘propyl effect’ in some chiral phenylpropiolates and benzoatesJournal of Materials Chemistry, 1993
- TGBA and TGBC phases in some chiral tolan derivativesJournal de Physique II, 1992
- Multiplexing Performance of Antiferroelectric Liquid Crystal DeviceJapanese Journal of Applied Physics, 1992
- Ferroelectric, ferrielectric and antiferroelectric properties in the (R)- and (S)-1-methylalkyl 4′-(4″-n-alkoxybenzoyloxy)biphenyl-4-carboxylate liquid crystalsJournal of Materials Chemistry, 1992
- Chirality in liquid crystalsJournal of Materials Chemistry, 1991
- Observation of Three Subphases in Smectic C* of MHPOBC by Dielectric MeasurementsJapanese Journal of Applied Physics, 1990
- Novel Phases Exhibiting Tristable SwitchingJapanese Journal of Applied Physics, 1989
- Characterization of a new helical smectic liquid crystalNature, 1989