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Evidence for perpendicular n-alkane orientation at the liquid/graphite interface

✍ Scribed by E.P. Gilbert; J.W. White; T.J. Senden


Publisher
Elsevier Science
Year
1994
Tongue
English
Weight
629 KB
Volume
227
Category
Article
ISSN
0009-2614

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✦ Synopsis


An STM study of the adsorption of n-hexatriaeontane on highly oriented pyrolytic graphite has revealed evidence for a new surface structure. The geometry of this structure indicates that it is composed of an overlayer of n-alkane chains which are rotated by 90" relative to the underlying n-alkane lamellae. A simple argument based on symmetry suggests that the carbon backbone plane of the underlying lameilar assembly is oriented perpendicular to the graphite basal plane.