Highly oriented, self-assembled alkanephosphate monolayers on tantalum(V) oxide surfaces
Octadecyl phosphoric acid ester has been found to produce oriented, well-ordered monolayers on a flat tantalum(V) oxide surface, via self-assembly from a heptane/propan-2-ol solution. By means of contact angle, optical waveguide lightmode spectroscopy (OWLS), near-edge X-ray absorption fine structure spectroscopy (NEXASFS), and X-ray photoelectron spectroscopy (XPS) measurements, it has been shown that these layers closely resemble those formed by the corresponding thiol-gold system, with respect to packing density, inclination, and order. The system shows promise as an approach to functionalizing oxide surfaces with well-ordered organic monolayers, with potential applications in the fields of biochemical analysis and sensors.
- Research Organization:
- Lab. for Surface Science and Technology, Zuerich (CH)
- Sponsoring Organization:
- USDOE; Swiss National Science Foundation (SNSF)
- OSTI ID:
- 20000011
- Journal Information:
- Langmuir, Vol. 15, Issue 13; Other Information: PBD: 22 Jun 1999; ISSN 0743-7463
- Country of Publication:
- United States
- Language:
- English
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