Structure and redox behavior of azobenzene-containing monolayers on Au(111): A combined STM, X-ray reflectivity, and voltammetry study
| Autor: | Klaus Krug, Diego Raffa, Ulrich Jung, Belinda Baisch, Claudia Bornholdt, J. Stettner, D. Kaminski, Annika Elsen, Olaf M. Magnussen, Rainer Herges, Tobias Weineisen |
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| Rok vydání: | 2008 |
| Předmět: |
Stereochemistry
General Chemical Engineering Self-assembled monolayer Analytical Chemistry law.invention X-ray reflectivity chemistry.chemical_compound Electron transfer Crystallography Azobenzene chemistry law Monolayer Electrochemistry Self-assembly Scanning tunneling microscope Cyclic voltammetry |
| Zdroj: | Journal of Electroanalytical Chemistry. :152-158 |
| ISSN: | 1572-6657 |
| DOI: | 10.1016/j.jelechem.2008.04.002 |
| Popis: | A combined structural and electrochemical study of self-assembled monolayers of the azobenzene-containing alkane thiol N-(2-mercaptoethyl)-4-phenylazobenzamide on Au(1 1 1) by scanning tunneling microscopy, synchrotron X-ray reflectivity, and cyclic voltammetry is presented. Densely packed monolayers are observed, in which the molecules are arranged in chains forming an ordered ( 13 × 3 ) structure with a coverage of 2/7 ML. The molecules are tilted by 40° relative to the surface normal, resulting in a monolayer thickness of 13.7 A. A total charge of 65.2 ± 4.3 μC/cm2 corresponding to 1e− per molecule and apparent electron transfer coefficients of ≈0.5 are found. |
| Databáze: | OpenAIRE |
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