N.A. Stepashkin had been working at the Department of Colloid Chemistry from the second year of study. During this time, he showed himself as an interested student, who able to work with his hands and with literature. He mastered the technique of obtaining nanoparticles of insoluble metal hexacyanoferrates, a method of studying the surface properties of monolayers of insoluble surfactants, the method of transferring monolayers to a solid substrate, and electrochemical methods of studying the electrode systems obtained by them, during this time. N.A. Stepashkin mastered the techniques of working at the Langmuir trough for obtaining compression isotherms and methods of mathematical processing of the obtained data. He carried out investigations of the surface properties of octadecylamine monolayers, modified by cobalt hexacyanoferrate nanoparticles. N.A. Stepashkin chose the optimal transport conditions and carried out the transfer of monolayers to the solid conducting substrate by the Langmuir-Blodgett method, based on the data obtained, and after he did electrochemical studies of the obtained systems.  N.A. Stepashkin read a lot of literature on this issue. He critically processed the material and presented a variant of the literary review.  I think that this work deserves a positive evaluation.