Local Field and Polarizability of Biomolecules in Anisotropic Media

Abstract
Using the data on dispersion of the refractive indices in the visible range for anisotro-picic films composed of polyglutamate and DNA macromolecules, the experimental values of the components L^j for the Lorentz tensor and the components f^j for the tensor of the local field of a light wave were obtained for the first time for such media. These local-field parameters correspond to limitations from below on the mean value

and anisotropy Δγ of the polarizability of macromolecules in the film. The limitations reflect the change of the polariza-bility tensor due to anisotropic intermolecular interactions in anisotropic film relatve to isotropic solution. The obtained results have been compared with consequences of the local-field models used in literature for anisotropic biomolecular media.

Keywords: anisotropic biomolecular media, local field, intermolecular interactions, polarizability of biomolecules