Liquid crystalline and carrier transport properties of non-peripheral-type of phthalocyanine analogues

Abstract

Analogous mesogens of non-peripheral type of hexahexylphthalocyanine (C6PcH2) were synthesized and studied on their mesomorphism and charge transport properties. All compounds exhibit columnar mesophases with slight difference in phase transition parameters. The number of N atoms at the meso positions in the macrocycle surely affects the mesophase variation as well as the thermal stability. On the other hand, carrier (drift) mobility was revealed to be in the order of 10-1 cm2 /Vs in an ambipolar manner which is comparable to those of C6PcH2.