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Title

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

AuthorsBenítez, José J. ; Salmerón, Miquel
Issue Date27-Jul-2006
PublisherAmerican Institute of Physics
CitationJournal of Chemical Physics 125(4): 044708 (2006)
AbstractThe influence of chain length and ripening time on the self-assembly of tetradecyl (C14), hexadecyl (C16), and octadecylamine (C16) 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 NH2 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.
Description5 pages, 5 figures.
Publisher version (URL)http://dx.doi.org/10.1063/1.2221692
URIhttp://hdl.handle.net/10261/21371
DOI10.1063/1.2221692
ISSN0021-9606
Appears in Collections:(ICMS) Artículos
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