ORGANIZATION OF TRIAZOLEPHTHALOCYANINES IN LANGMUIR-BLODGETT-FILMS

Langmuir monolayers were prepared using a new class of non-centrosymme tric macrocycles, the triazolephthalocyanines, differently substituted with aliphatic chains and/or thiophene subunits. Different monolayer behaviour and film deposition have been observed among the different m acrocycles. Compounds substituted with two long aliphatic chains on th e isoindole ring opposite to the triazole unit have shown the best mon olayer behaviour. Stable monolayers were successfully transferred onto CaF2 substrates which had been made hydrophobic. The Langmuir-Blodget t films were characterized by IR and UV-VIS linear dichroism. In-plane orientation of some of the macrocycles was observed when nickel(II) a cetate was added to the aqueous subphase.