The chiral induction of chiral nematics and the anisotropic circular dichroism

The anisotropic circular dichroism (ACD) and the chiral induction (HTP) are two chirality measurements of very different kind. For two binaphthyls dia gonal elements of the circular dichroism (CD) tensor have been determined f rom the temperature dependence of the ACD and diagonal elements of the chir ality interaction tensor from the temperature dependence of the HTP as a fu nction of the order parameters. The tensor coordinate of the CD tensor and the chirality interaction tensor which belongs to the direction along the n aphthyl-naphtyl bond determines mainly the ACD and HTP, respectively. In bo th cases an order independent contribution to the ACD and HTP exist.