Metal−Polymer Hybrid Colloidal Particles with an Eccentric Structure
| Autor: | Akira Ohnuma, Younan Xia, Majiong Jiang, Eun Chul Cho, Bunsho Ohtani |
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| Rok vydání: | 2009 |
| Předmět: |
Materials science
Polymers Nanoparticle Nanotechnology Metal Colloid Methods Electrochemistry Chemical Precipitation General Materials Science Colloids Particle Size Spectroscopy chemistry.chemical_classification Molecular Structure Precipitation (chemistry) digestive oral and skin physiology Surfaces and Interfaces Polymer Condensed Matter Physics Cross-Linking Reagents Polymerization chemistry Chemical engineering Metals visual_art Solvents visual_art.visual_art_medium Precipitation polymerization Particle |
| Zdroj: | Langmuir. 25:13880-13887 |
| ISSN: | 1520-5827 0743-7463 |
| Popis: | We have synthesized metal-polymer hybrid colloidal particles characterized by an eccentric structure by precipitation polymerization in the presence of metal colloids. The key to the formation of an eccentric core-shell structure was to introduce metal colloids a few minutes after (rather than before) starting the polymerization. The hybrid particles were uniform in size, and each one of them contained only one metal nanoparticle at its surface after the experimental procedures had been optimized. This method could be extended to a number of different metal colloids stabilized by small molecules, and the yield was found to be more or less independent of the size of the metal nanoparticles. In addition, the position of the metal nanoparticle in the hybrid particle could be controlled by changing the concentration of cross-linker, and the overall size of the hybrid particles could be altered by solvent treatment. Because of the simplicity of this procedure, it should be possible to use it for the large-scale production of colloidal particles having a hybrid, complex structure. |
| Databáze: | OpenAIRE |
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