Monofunctionalized Gold Nanoparticles Stabilized by a Single Dendrimer Form Dumbbell Structures upon Homocoupling
| Autor: | Jens Peter Hermes, Marcel Mayor, Thomas Pfohl, Fabian Sander, Raphael Urbani, Damien Thompson, Torsten Peterle, Ulrike Fluch |
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| Rok vydání: | 2012 |
| Předmět: |
Chemistry
Ligand Nanotechnology 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Biochemistry Combinatorial chemistry Catalysis 0104 chemical sciences 3. Good health chemistry.chemical_compound Colloid and Surface Chemistry Acetylene Thioether Colloidal gold Dendrimer Molecule Dumbbell 0210 nano-technology Hybrid material |
| Zdroj: | JOURNAL OF THE AMERICAN CHEMICAL SOCIETY |
| ISSN: | 1520-5126 0002-7863 |
| DOI: | 10.1021/ja306253t |
| Popis: | The assembly of dumbbell structures as organic-inorganic hybrid materials is presented. Gold nanoparticles (NPs) with a mean diameter of 1.3 nm were synthesized in very good yields using a stabilizing dendrimer based on benzylic thioether subunits. The extended dendritic ligand covers the NP surface and contains a peripheral protected acetylene, providing coated and monofunctionalized NPs. These NPs themselves can be considered as large molecules, and thus, applying a wet-chemical deprotection/oxidative acetylene coupling protocol exclusively provides dimers of NPs interlinked by a diethynyl bridge. The concept not only enables access to novel organic/inorganic hybrid architectures but also promises new approaches in labeling technology. |
| Databáze: | OpenAIRE |
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