POLY(OXYETHYLENE)-SUBSTITUTED COPPER AND LUTETIUM PHTHALOCYANINES

A new family of nonionic water-soluble lutetium bisphthalocyanines and a copper monophthalocyanine have been synthesized and characterized. Optical absorption determinations demonstrate aggregation processes in water. Optical microscopy, differential scanning calorimetry (DSC), a nd X-ray diffraction measurements have also been performed on the mate rials. The substituted copper complex yields a hexagonal columnar Liqu id crystal above 62 degrees C; this mesophase can incorporate up to 16 % (w/w) of triethylene glycol without significant disturbance of the s tructure, One of the substituted lutetium bisphthalocyanines affords a tetragonal columnar mesophase; the other bisphthalocyanine derivative s show only highly ordered crystalline like phases. Conductivity measu rements have been carried out on thin films of the previous derivative s to determine the relative electronic and ionic conduction contributi ons.