Floating layer structure of mesogenic phthalocyanine of A3B-type
А. V. Kazak, М. А. Марченкова, А. И. Смирнова, A. Yu. Seregin, Alexandr V. Rogachev, Jonas E. Warias, Bridget M. Murphy, E. Yu. Tereschenko, N. V. Usol’tseva
Abstract
To design efficient thin-film materials for low cost organic nanoelectronic devices, the Langmuir floating layer structure of the mesogenic 1,4,8,11,15,18-hexaoctyloxy-22,23,24,25-tetrachlorophthalocyanine (A$_3$B-type) was characterized by Brewster angle microscopy, grazing incidence diffraction, and reflectometry. Starting from the area per one molecule of 7.6 nm$^2$, a single two-dimensional ordered structure with the period of 2.3 nm was formed. When the area reaches the value of 2.5 nm$^2$, a stable bilayer structure with imperceptible number of 3D aggregates was detected, in which each monolayer preserved organization of the preceding monolayer.