| abstract |
Fluorinated biphenyldiole derivatives of formula (I), where R1 and R2 are each independently alkyl, alkenyl and wherein one CH2-group can also be replaced by -O-, -O-CO-, -CO-O-, and/or -CH=CH- with the proviso that two O atoms are not directly linked. The chain may be interrupted by a trans-1,4-cyclohexylene group and/or a 1,4-bicyclooctylene group, or a 1,4-phenylene group wherein one or two CH-groups may be replaced by N. These compounds have liquid crystalline properties and may be used as components of liquid crystal materials. |