Charge transport and molecular dynamics in columnar stacks of liquid crystalline phthalocyanine derivatives

Authors


  • Support by the DFG (German Science Foundation, SFB 292) and by the Fond der Chemischen Industrie is highly appreciated. F. Kremer is especially grateful for the generous support of the Max-Planck-Institut for Polymer Research in Mainz in building up the new laboratory at the University of Leipzig.

Abstract

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.

Ancillary