Experimental Three-Dimensional Description of the Liquid Hexadecane/Graphite Interface

被引：10

作者：

Van, L. Pham ^{[1
]}

Kyrylyuk, V. ^{[1
]}

Polesel-Maris, J. ^{[1
]}

Thoyer, F. ^{[1
]}

Lubin, C. ^{[1
]}

Cousty, J. ^{[1
]}

机构：

[1] CEA Saclay, F-91191 Gif Sur Yvette, France

来源：

LANGMUIR | 2009年 / 25卷 / 02期

关键词：

ATOMIC-FORCE MICROSCOPY; SCANNING-TUNNELING-MICROSCOPY; ALKANE MONOLAYERS; BINARY-MIXTURES; N-ALKANES; GRAPHITE; FILMS; LAYERS;

D O I：

10.1021/la803665k

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

By using an atomic force microscope based on a quartz tuning fork sensor, a 3-dimensional description of the interface between liquid hexadecane and a highly oriented pyrolytic graphite surface can be achieved at room temperature. The C16H34 monolayer in contact with the substrate surface exhibits a lamellar structure whereas no observation at the liquid/graphite interface by scanning tunnelling microscopy was reported for this alkane. The second layer shows very weak corrugations corresponding to lamella boundaries. Force/distance curves show at. least four oscillations separated by 0.4 nm except for the first period with a 0.38 nm distance that corresponds to the layer closer the substrate. Such a description agrees well with molecular dynamics results obtained on alkane/solid interfaces.

引用

页码：639 / 642

页数：4