An Improved Method for the Assembly of Amino-Terminated Monolayers on SiO2 and the Vapor Deposition of Gold Layers

Amino-terminated self-assembled monolayers on SiO2 surfaces were obtained by means of a simple silylation method. The thickness of the monolayers was measured with ellipsometry. Washing tests with strong solvents indicated that the amino-silane is covalently bonded to the silica surface. Amino-termi...

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Bibliographic Details
Published inLangmuir Vol. 15; no. 13; pp. 4520 - 4523
Main Authors Siqueira Petri, Denise F, Wenz, Gerhard, Schunk, Peter, Schimmel, Thomas
Format Journal Article
LanguageEnglish
Published Washington, DC American Chemical Society 22.06.1999
Subjects
Chemistry
Exact sciences and technology
General and physical chemistry
General, apparatus
Surface physical chemistry
Self assembly
Monolayer
Gold
Vapor deposition
Surface reaction
Amino group
Molecular assembly
Silylation
Silicon Oxides
Modified material
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Summary:Amino-terminated self-assembled monolayers on SiO2 surfaces were obtained by means of a simple silylation method. The thickness of the monolayers was measured with ellipsometry. Washing tests with strong solvents indicated that the amino-silane is covalently bonded to the silica surface. Amino-terminated monolayers on SiO2 surfaces are very flat and homogeneous, as shown by atomic force microscopy. Contact angle measurements showed that such monolayers interact very quickly with air impurities and should be used just after the silylation. The adhesion between the amino-terminated surface and gold was evidenced by ultrasonic and tape tests.
Bibliography:istex:18BDCBD35670B6E9BBEF863D6D8B4E2E4610AAC2
ark:/67375/TPS-SHPZ0NZ2-F
ISSN:0743-7463
1520-5827
DOI:10.1021/la981379u