Самоорганізація молекул гексадецилборної кислоти на атомно-гладкій поверхні графіту

• Main Authors: Senenko, A.I., Marchenko, A.A., Naumovets, A.G., Taraschenko, D.T., Glubokov, D.A., Voloshin, Ya.Z., Varzatskiy, A.A., Kapitanchuk, A.L.
• Format: Article
• Language: Ukrainian; English
• Published: Publishing house "Academperiodika" 2022
• Subjects: -
• Online Access: https://ujp.bitp.kiev.ua/index.php/ujp/article/view/2022011

It has been shown that highly ordered monolayer films of hexadecyl boron acid CH3–(CH2)15–B(OH)2 can be obtained on the basal plane of highly oriented pyrolytic graphite by the deposition from a solution of the acid in n-tetradecane n-C14H30. Using the scanning tunneling microscopy, it has been found that the ordered monolayers have a lamella-like structure. In this structure, each lamella is composed of pairs (dimers) of molecules of the acid. The association of molecules in each pair is implemented through the interaction between B(OH)2-groups. It has been also found that molecules of solvent n-C14H30, being at a temperature sufficiently higher than the surface crystallization temperature can be coadsorbed with molecules of the acid. The coadsorption is explained by the geometric factor due to a specific size of the dimers of hexadecyl boron acid.