Structural peculiarities of mesogenic phthalocyanines and their derivatives are considered. Liq uid crystalline materials based on self assembled phthalocyanine molecules are promising novel functional materials for sensors, as catalysts, optically and bioactive matrices, and semiconductor cells. Mesomorphic and electrophysical characteristics of liquid crystalline phthalocyanine based materials are considered, pos sibilities of their use are discussed, and the structure-property relations are analyzed.