HELICAL TWISTING POWER OF LATERALLY ARYL SUBSTITUTED CHIRAL MESOGENS

The relationship between the helical twisting power (HTP) of cholester ic liquid crystals and the molecular structure of the chiral mesogens has been investigated. Rod-like mesogens are compared with analogues b earing a bulky lateral branch. Additionally, the HTP of induced choles teric phases formed by chiral guest molecules in nematic host phases h as been studied in terms of different molecular structures. The paper gives information on the influence of bulky lateral groups in mesogens on the HTP.