CHARGE-TRANSPORT AND MOLECULAR-DYNAMICS IN COLUMNAR STACKS OF LIQUID-CRYSTALLINE PHTHALOCYANINE DERIVATIVES

Communication: Broadband dielectric spectroscopy has been employed to study the electric charge transport and molecular dynamics in columnar stacks of liquid crystalline phthalocyanine derivatives, materials which are of interest as one-dimensional semiconductors or as photoconductors. Three relaxation processes and a conductivity contribution have been identified and it is concluded that the solid-to-liquid crystalline phase transition has no influence on the temperature dependence of the conductivity.