In-situ monitoring of alkanethiol self-assembled monolayer chemisorption with combined spectroscopic ellipsometry and quartz crystal microbalance techniques
| Autor: | Mathias Schubert, Keith B. Rodenhausen, Matthew Scott Wagner, M. Solinsky, Angela K. Pannier, B.A. Duensing, Tino Hofmann, Tadas Kasputis, T. E. Tiwald |
|---|---|
| Rok vydání: | 2011 |
| Předmět: |
Chemistry
Metals and Alloys Analytical chemistry Self-assembled monolayer Surfaces and Interfaces Quartz Crystal Microbalance Techniques Quartz crystal microbalance Surfaces Coatings and Films Electronic Optical and Magnetic Materials Chemisorption Phase (matter) Monolayer Materials Chemistry Physical chemistry Porosity Layer (electronics) |
| Zdroj: | Thin Solid Films. 519:2817-2820 |
| ISSN: | 0040-6090 |
| Popis: | Self-assembled monolayers (SAMs) formed via chemisorption are important for a variety of surface enhancement and biological applications. We demonstrate that combinatorial spectroscopic ellipsometry (SE) and quartz crystal microbalance with dissipation (QCM-D) provides dynamic, in-situ characterization of the chemisorption process. In agreement with other studies, we find there are two steps for 1-decanethiol, an example alkanethiol SAM, chemisorption onto gold, which are a brief, fast phase followed by one that is long but slower. By using both the optical (SE) and mechanical (QCM-D) techniques, we show that the SAM porosity decreases during the second phase as the coupled ethanol solvent in the disorganized layer is replaced by more alkanethiol. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect