| abstract |
Optically active compounds of the formula I can be used as components of chiral titled smectic liquid crystal phases: R1-C*HX-Q-A4-Z1-A2-(Z2-A3)n-X'-Q'-C*HY'-R5 (I) wherein R1-C*HX-Q- and -X'-Q'-C*HY-R5 are identical optically active radicals selected from the group -O-C*HCH3-COO-n-alkyl, -O-C*HCH3-CH2-O-n-alkyl, -OCO-C*HC1-CHCH3-CH3, -OCO-C*HCl-C*HCH3-C2H5, -OCO-C*HCl-CH2-CHCH3-CH3, -OCO-C*HCl-C(CH3)3, -COO-C*HCH3-COO-n-alkyl, -O-CO-C*HCH3-o-n-alkyl, -OCH2-C*HCH3-O-n-alkyl, -COO-C*HCH3CH2-O-n-allyl, -OC*HCH3-CH2-COO-n-alkyl, -COO-C*HCH3-CH2-COO-n-alkyl, -OCH2-C*HCH3-COO-n-alkyl or -COO-CH2-C*HCH3-COO-n-alkyl, alkyl is of 1-12 c atoms, and -A4-Z1-A2-(Z2-A3)n- is a group of the following formulae or a mirror image thereof: <IMAGE> <IMAGE> <IMAGE> <IMAGE> <IMAGE> |