Abstract
Different orientations of the phthalocyanine ring were obtained in Langmuir-Blodgett (LB) films of tetrasubstituted phthalocyanine lead, depending on the properties of the substituents ( t-butyl, cumylphenoxy and pentoxy groups). This difference affected their electrical properties; tetrapentoxy phthalocyanine lead LB films exhibited high conductivity (10 −4−10 −7 S cm −1) in the direction parallel to the substrate, while the others had insulating properties. This high conductivity was attributed to the formation of a face-to-face stack of lead phthalocyanine molecules in the LB film.
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