Thermal phase transitions and carrier transport properties in binary mixtures of a liquid crystalline phthalocyanine, 1,4,8,11,15,18,22,25-octahexyl-phthalocyanine (C6PcH2) and its analogue, 1,4,8,11,15,18,22,25-octahexyl-tetrabenzotriazaporphyrin (C6TBTAPH2), have been studied. In order to clarify the miscibility and crystal structure of the binary mixtures, the phase diagram was investigated by using DSC, and the XRD analysis was carried out. The high hole mobility was estimated by time-of-flight technique, and the blend ratio dependence of the hole mobility was discussed by taking the dominant molecular packing structure in the binary mixture into consideration.
