Artículo
The influence of chain length and ripening time on the self-assembly of alkylamines on mica
Autor/es | Benítez Jiménez, José Jesús
Salmerón, Miquel |
Fecha de publicación | 2006 |
Fecha de depósito | 2018-04-04 |
Publicado en |
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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 ... 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. |
Cita | Benítez Jiménez, J.J. y Salmerón, M. (2006). The influence of chain length and ripening time on the self-assembly of alkylamines on mica. Journal of Chemical Physics, 125 (4), 1-5. |
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