Syntheses of Liquid Crystalline Phthalocyanines
- 1 January 1987
- journal article
- research article
- Published by Georg Thieme Verlag KG in Synthesis
- Vol. 1987 (08) , 703-705
- https://doi.org/10.1055/s-1987-28050
Abstract
The syntheses of peripherally substituted metal phthalocyanines (C8H17OCH2)8PcM with M = Co, Ni and Pb are described. The macrocycle (C8H17OCH2)8PcCo is reacted with sodium cyanide under oxidative conditions to give the cyano-bridged compound [(C8H17OCH2)8PcCoCN]n. All of the substituted metal phthalocyanines show liquid crystalline properties with phase transitions between 53.8°C and 94°C. Their liquid-crystal properties were demonstrated by DSC measurements and by polarization microscopy.Keywords
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