Quantitative analysis of the supramolecular structure of metastable polycrystalline films by infrared spectropolarimetry

A method of quantitative estimation of the structural anisotropy of metastable organic polycrystalline films based on infrared spectropolarimetry is used to investigate the structural features films of the α form of copper phthalocyanine. Due to the separation of the inverse problem of reconstruction of the optical parameters of the medium into a number of stages with optimization over no more than two unknown parameters, the graphical tracking of the optimization process and, as a consequence, the minimization of errors and on-line correction of ambiguity are performed at each stage of the solution. It is demonstrated that the structure of copper phthalocyanine films vacuum-deposited onto a substrate can be changed by varying the substrate temperature, the angle of incidence of a molecular beam during the deposition, and the electrostatic field applied to the substrate.