ИСТИНА

The report presents the research of polymer layers of amphiphilic homopolymers densely grafted to a flat surface at the nodes of a square lattice. Monomer units of these homopolymers containing groups with different affinities. It was demonstrated that in a selective solvent such layers form lamellas with different period depending on the grafting density and the solvent quality. The results are summarized as a state diagram in the variables “the distance between grafting points” and “the solvent quality”. There are several regions on the diagram: disorder,region of stability of lamellae, lamellae with significantly different periods and a transitional area with a parking garage structure. The diagram is built by calculating the layer-by-layer structure factor and the angle of inclination of the lamellae in the layer. The calculations were executed for commensurate cell sizes, determined by a special procedure for each grafting density. Acknowledgments: This research was supported financially by Russian Science Foundation (project number 19-73-20104) and Ministry of Science and Education. The research is carried out using the equipment of the shared research facilities of HPC computing resources at Lomonosov Moscow State University. References 1.A.A.Lazutin, A.N. Kosmachev and V.V.Vasilevskaya, J.Chem.Phys. 2019 (accepted)