AFM investigations of surface relief of thermal treated thin films of modified banana-shaped compound-bis-{3,4,5-tri[4-(4'-nonyloxy-benzoyloxy)]benzoylamino}-1,3-phenylene (I)-in crystalline phase and films obtained by spin coating or Langmuir-Blodgett methods from chloroform solution without thermal treatment were carried out. It was determined that the thin films' surface topology of the compound I in the crystalline phase depends essentially on the way of the film preparation and filming process.