Structural studies of intermolecular interactions in pure and diluted films of a redox-active phthalocyanine

摘要: Abstract This paper reports on a structural study of pure and diluted homolayers an amphiphilic vanadyl porphyrazine (VOS 18 ), which were built up by the Langmuir-Blodgett technique. Electron spin resonance measurements show that macrocycles lie flat substrate. Even for low dilution ratios, Langmuir films VOS stearic acid exhibit very good cohesion (up to 50 mN m −1 is greater than collapse pressure both films. Pressure vs. area curves recorded progressively indicate climbs onto macrocycle, four or five equivalents. phenomenon explains mixed film. It related formation carboxylate salt, as monitored IR spectroscopy, where stearate ion replaces bromide in vicinity porphyrazine. chemical reaction monolayer phase goes with increased organization fatty chains, shown linear dichroism.