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The influence of chain length and ripening time on the self-assembly of alkylamines on mica

Opened Access The influence of chain length and ripening time on the self-assembly of alkylamines on mica

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Autor: Benítez, José J.
Salmerón, Miquel
Fecha: 2006
Tipo de documento: Artículo
Resumen: The influence of chain length and ripening time on the self-assembly of tetradecyl C 14 , hexadecyl C 16 , and octadecylamine C 16 on mica has been studied by atomic force microscopy. The overall process can be described in three stages characterized by different time scales. First, alkylamine molecules adsorb in a process controlled by water mediated interactions of the NH 2 head groups and mica. Second, surface diffusion and aggregation into islands takes place, driven by energy interactions between alkyl chains. The third stage consists of a progressive tilt of the self-assembled molecules towards the surface, driven by relaxation of the electrostatic repulsion between protonated amino groups due to water uptake from atmosphere.
Tamaño: 135.8Kb
Formato: PDF

URI: https://hdl.handle.net/11441/71774

DOI: 10.1063/1.2221692

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