Abstract
Synthesis and mesomorphism of novel non-symmmetric mono β-aryl (octylsulfanyl)porphyrazines and their Ni(II) complexes were reported. A recently disclosed asymmetrization procedure led to mono β-bromo substituted porphyrazines, which provided access to aryl substituted derivatives through Suzuki cross-coupling. UV-Vis spectroscopy showed a bathochromic shift for bromine and aryl substituted nickel complexes. Optical Microscopy and DSC showed that Br derivatives 3a–3b and H-heptakis Ni(II) complex 2b display two columnar mesophases (Colh and Colr) stable even at RT and a wide ΔT (100°C). Introduction of the aryl substituent on the macrocycle caused the appearance of only the Colh mesophase and lower ΔT.
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