Benzoic Acid and Phthalic Acid on Atomically Well-Defined MgO(100) Thin Films: Adsorption, Interface Reaction, and Thin Film Growth
| Autor: | Max Amende, Susanne Mohr, Andreas Görling, Tao Xu, Mathias Laurin, Tibor Döpper, Jörg Libuda |
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| Rok vydání: | 2015 |
| Předmět: |
Materials science
Inorganic chemistry Surfaces Coatings and Films Electronic Optical and Magnetic Materials Phthalic acid chemistry.chemical_compound General Energy Adsorption chemistry Physical vapor deposition Desorption Monolayer Physical chemistry Physical and Theoretical Chemistry Thin film Molecular beam Benzoic acid |
| Zdroj: | The Journal of Physical Chemistry C. 119:26968-26979 |
| ISSN: | 1932-7455 1932-7447 |
| Popis: | To better understand the interaction and the growth of thin films of functionalized organic molecules on oxide surfaces, we have studied the adsorption, reaction, and desorption of benzoic acid (BA) and phthalic acid (PA) on a well-ordered MgO(100) thin film grown on a Ag(100) single crystal surface. We have applied isothermal time-resolved infrared reflection–absorption spectroscopy (TR-IRAS) and temperature-programmed IRAS (TP-IRAS) under ultrahigh-vacuum (UHV) conditions. BA is dosed using a supersonic molecular beam (SSMB) source while PA is deposited by physical vapor deposition (PVD). For both molecules we have explored the film growth as a function of temperature, both in the monolayer and in the multilayer regime. We have also investigated structural transitions and desorption by temperature-programmed experiments in the range from 100 to 400 K. In addition, we carried out density-functional (DF) calculations. We find that both molecules BA and PA bind through the carboxyl groups to the MgO(100) s... |
| Databáze: | OpenAIRE |
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