title: Influence of chlorophyll a on intermolecular interactions in liquid crystal.
abstract: Studies of the variability of the spectral properties (linear dichroism, polarized fluorescence and the energetic separation of the absorption and emission bands) of chlorophyll a in a nematic liquid crystal matrix with respect to the effects of solute concentration and the external electric fields were made. A close examination of the above mentioned types of variability suggest that the pigment molecules can influence a high initial order of the liquid crystal matrix. These structural changes of the matrix can be explained by the assumption that two types of chlorophyll with different orientations occur: the surface layers with the high degree of orientation, and a central volume of the sample with disordered molecules. The ordered molecules are sensitive to an reorientation by the external electric field.
authors.affiliation: Institute of Physics, Poznań Technical University, 61-965 Poznań, Poland.
authors.forename: Z
authors.initials: Z
authors.lastname: Salamon
authors.forename: T
authors.initials: T
authors.lastname: Martyński