Two-Dimensional Self-Assembled Structures of Melamine and Melem at the Aqueous Solution−Au(111) Interface
| Autor: | Masashi Aono, Tamikuni Komatsu, Masashi Kunitake, Shinobu Uemura |
|---|---|
| Rok vydání: | 2010 |
| Předmět: |
Aqueous solution
Inorganic chemistry Surfaces and Interfaces Condensed Matter Physics law.invention chemistry.chemical_compound Adsorption chemistry law Electrochemistry Molecule General Materials Science Cyclic voltammetry Scanning tunneling microscope Melamine Spectroscopy Electrochemical potential Triazine |
| Zdroj: | Langmuir. 27:1336-1340 |
| ISSN: | 1520-5827 0743-7463 |
| DOI: | 10.1021/la103948n |
| Popis: | Self-assembled structures of melamine and the condensed melamine derivative melem were investigated at aqueous solution-Au(111) interfaces by cyclic voltammetry and in situ scanning tunneling microscopy (STM) observation. The adsorption/desorption behaviors of both molecules on Au(111) surfaces could be controlled by varying the electrochemical potential and solution concentration. In the negative potential region, self-assembled structures of melem and melamine were constructed by double hydrogen bonding systems between nitrogen atoms of triazine rings and amine groups. In addition, melem formed a closely packed structure at potentials of between -0.3 and -0.15 V or in solutions at higher concentrations. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|