Order and orientation in self-assembled long chain alkanephosphate monolayers adsorbed on metal oxide surfaces

被引：47
作者：
Hähner, G
Hofer, R
Klingenfuss, I
机构：
[1] UCL, Dept Phys & Astron, London WC1E 6BT, England
[2] Swiss Fed Inst Technol, Dept Mat, CH-8092 Zurich, Switzerland
来源：
LANGMUIR | 2001年 / 17卷 / 22期
关键词：
D O I：
10.1021/la010713a
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Octadecylphosphoric acid ester was employed to establish monolayers on various flat oxide substrates. The films were prepared via self-assembly from a heptane/propan-2-ol solution. The alkanephosphate was found to produce oriented, well-ordered films on titanium oxide, niobium. oxide, and aluminum oxide surfaces. Contact-angle measurements and near-edge X-ray absorption fine structure spectroscopy (NEXAFS) indicate that these layers closely resemble those formed by a similar thiol-gold system, with respect to packing density, inclination, and molecular order. The preparation scheme appears to be rather universally applicable to a variety of metal oxide substrates. These systems show promise as an approach to functionalizing different oxide surfaces with well-ordered organic monolayers, with potential applications in the fields of corrosion protection, adhesion promotion, biochemical analysis, and sensors.
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收藏
页码：7047 / 7052
页数：6
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