Langmuir Films of Normal-Alkanes on the Surface of Liquid Mercury

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Langmuir Films of Normal-Alkanes on the Surface of Liquid Mercury

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Title: Langmuir Films of Normal-Alkanes on the Surface of Liquid Mercury
Author: Kraack, H.; Ocko, B. M.; Pershan, Peter S.; Sloutskin, E.; Deutsch, M.

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Citation: Kraack, H., B. M. Ocko, Peter S. Pershan, E. Sloutskin, and M. Deutsch. 2003. Langmuir films of normal-alkanes on the surface of liquid mercury. Journal of Chemical Physics 119(19): 10339-10349.
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Abstract: The coverage dependent phase behavior of molecular films of n-alkanes (\(CH_{3}CH_{n−2}CH_3\), denote Cn) on mercury was studied for lengths 10 \(\leq\) n \(\leq\) 50, using surface tensiometry and surface x-ray diffraction methods. In contrast with Langmuir films on water, where roughly surface-normal molecular orientation is invariably found, alkanes on mercury are always oriented surface-parallel, and show no long-range in-plane order at any surface pressure. At a low coverage a two-dimensional gas phase is found, followed, upon increasing the coverage, by a single condensed layer (n \(\leq\) 18), a sequence of single and double layers (19 \(\leq\) n \(\leq\) 20; n \(\geq\) 26), or a sequence of single, double, and triple layers (22 \(\leq\) n \(\leq\) 24). The thermodynamical and structural properties of these layers, as determined from the measurements, are discussed.
Published Version: doi:10.1063/1.1618211
Other Sources: http://www.liquids.deas.harvard.edu/peter/2003.pdf/jcp10339.pdf
Terms of Use: This article is made available under the terms and conditions applicable to Other Posted Material, as set forth at http://nrs.harvard.edu/urn-3:HUL.InstRepos:dash.current.terms-of-use#LAA
Citable link to this page: http://nrs.harvard.edu/urn-3:HUL.InstRepos:10354436
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