Optical and electrochemical properties of metallophthalocyanine derivative Langmuir-Blodgett films

The formation of high-quality Langmuir-Blodgett films of copper and nickel phthalocyanine derivatives substituted with short branched chains is reported. Ellipsometric and polarized optical absorption measurements suggest that the phthalocyanine molecules have a preferred orientation, with their large faces perpendicular to the dipping direction and to the substrate plane. Electrochromic effects are also noted in these multilayer films.