Study of the spontaneous formation of organic layers on carbon and metal surfaces from diazonium salts
| Autor: | Sophie Griveau, Eva Cabet-Deliry, Jean Pinson, Annie Chaussé, Florence Mercier, Alain Adenier, Nicole Barre, Christine Vautrin-Ul |
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| Rok vydání: | 2006 |
| Předmět: |
chemistry.chemical_classification
Tetrafluoroborate Chemistry Inorganic chemistry Salt (chemistry) chemistry.chemical_element 02 engineering and technology Surfaces and Interfaces Zinc Glassy carbon 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences 0104 chemical sciences Surfaces Coatings and Films Metal chemistry.chemical_compound Nickel visual_art Materials Chemistry visual_art.visual_art_medium 0210 nano-technology Acetonitrile Carbon |
| Zdroj: | Surface Science. 600:4801-4812 |
| ISSN: | 0039-6028 |
| DOI: | 10.1016/j.susc.2006.07.061 |
| Popis: | This study investigates the spontaneous grafting of different para-substituted phenyl groups on carbon and metallic surfaces from diazonium salts solutions. Glassy carbon, nickel, zinc and iron plates were allowed to react with an acetonitrile solution of aryldiazonium tetrafluoroborate salt by simple dipping. The surfaces were characterized before and after their immersion by XPS and AFM to evidence the formation of a coating on the different materials. The results are indicative of the presence of substituted phenyl groups on all the investigated surfaces. This study also aims at correlating grafting efficiency with metal reactivities and diazonium salt electronic properties by means of AFM and FT-IRRAS. For this purpose, zinc and nickel were chosen due to their opposite reducing properties and two diazonium salts were selected with electron-donor or -withdrawing para-substituents. The results tend to indicate that redox properties of both partners (diazonium + metal) are of prime importance for grafting to occur. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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