Keywords
Brewster angle microscopy
floating layers
grazing incidence diffraction
mix-substituted phthalocyanine
structure
X-ray reflectivity
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 (A3B-type) was characterized by Brewster angle microscopy, grazing incidence diffraction, and reflectometry. Starting from the area per one molecule of 7.6nm2, a single two-dimensional ordered structure with the period of 2.3nm was formed. When the area reaches the value of 2.5 nm2, a stable bilayer structure with imperceptible number of 3D aggregates was detected, in which each monolayer preserved organization of the preceding monolayer.
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