Y. Aoki et al., Synthesis of new chiral dopants derived from 2-phenylpropanoic acid derivatives for nematic liquid crystals, B CHEM S J, 74(11), 2001, pp. 2219-2222
New chiral dopants for nematic liquid crystals were synthesized using optic
ally active 2-phenylpropanoic acid derivatives. The magnitude of the helica
l twisting power (HTP) was largely influenced by the terminal group of the
asymmetric frame and the core structures. (S)-1-[4-(trans-4-Butylcyclohexyl
)phenyl]-2-phenylpropane-1-one showed a large HTP value (20.4 mum(-1)). The
relationship between the HTP and the molecular structures of the chiral do
pants is discussed.