In situ generation of silver microstructures by thermal decomposition of silver n-dodecanethiolate dispersed in an organic-inorganic hybrid coating
Although it is known that metallic silver can be produced by the thermal decomposition of silver n-dodecanethiolate (Ag-DDT), the use of this reaction to synthesize silver-modified coatings is difficult due to the insolubility of Ag-DDT in most solvents and coating precursors. We report that lamella...
| Autores: | , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2011 |
| País: | Argentina |
| Institución: | Consejo Nacional de Investigaciones Científicas y Técnicas |
| Repositorio: | CONICET Digital (CONICET) |
| Idioma: | inglés |
| OAI Identifier: | oai:ri.conicet.gov.ar:11336/55868 |
| Acceso en línea: | http://hdl.handle.net/11336/55868 |
| Access Level: | acceso abierto |
| Palabra clave: | Coatings Heat Treatment Microstructures Nanocomposites https://purl.org/becyt/ford/2.10 https://purl.org/becyt/ford/2 |
| Sumario: | Although it is known that metallic silver can be produced by the thermal decomposition of silver n-dodecanethiolate (Ag-DDT), the use of this reaction to synthesize silver-modified coatings is difficult due to the insolubility of Ag-DDT in most solvents and coating precursors. We report that lamellar Ag-DDT crystals can be uniformly dispersed in an organic-inorganic hybrid coating based on a bridged silsesquioxane containing pendant dodecyl chains. Heating the dispersion for 4 h at 423 K (above the melting point of the Ag-DDT crystals) produced the transformation of the lamellar phase into a metastable crystalline phase together with a spiral-like microstructuration of the whole material. When the heating was continued for 24 h, the metastable crystalline phase led to metallic silver microstructures uniformly dispersed in the silsesquioxane matrix. |
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