Removal of self-assembled monolayers of alkanethiolates on gold by plasma cleaning
| Autor: | Kevin Raiber, Norman Krings, Hans-Henning Strehblow, Andreas Terfort, Carsten Benndorf |
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| Rok vydání: | 2005 |
| Předmět: |
Plasma cleaning
Chemistry Analytical chemistry Self-assembled monolayer Surfaces and Interfaces Condensed Matter Physics Surfaces Coatings and Films law.invention Contact angle X-ray photoelectron spectroscopy law Ellipsometry Monolayer Materials Chemistry Scanning tunneling microscope Plasma processing |
| Zdroj: | Surface Science. 595:56-63 |
| ISSN: | 0039-6028 |
| DOI: | 10.1016/j.susc.2005.07.038 |
| Popis: | Plasmas of hydrogen or oxygen were used to remove self-assembled monolayers (SAMs) of alkanethiolates from gold surfaces. X-ray photoelectron spectroscopy (XPS), scanning tunneling microscopy (STM), ellipsometry, and contact angle measurements were used to compare the efficiency of the different plasmas and to explore their respective influence on the surface topology. Both plasmas were able to remove the SAM from the gold surface within less than 60 s. While the hydrogen plasma produces a de facto sulfur-free surface, oxygen plasma cleaning leads to an Au 2 O 3 surface contaminated with oxidized sulfur species (probably sulfonates and sulfate). Nevertheless, the plasmas alter the roughness of the gold surfaces only marginally, as demonstrated by STM. |
| Databáze: | OpenAIRE |
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