New N-arylidene (S)-1-phenylethylamines with ester group in arylidene fragm
ent have been synthesized. The chiral dopants helical twisting power and te
mperature dependence of the induced cholesteric helical pitch in LC systems
based on 3-pentyl-4'-cyanobiphenyl have been studied as well as selective
light reflection spectra and their temperature dependences for systems incl
uding nematic E63 (Merck) and new chiral components. An influence of the ch
iral dopant molecular structure on the mentioned characteristics of LC syst
ems investigated was revealed. The induced cholesteric compositions with te
mperature-independent selective light reflection in visible range have been
obtained.