Hybridized plasmon resonances in core/half-shell silver/cuprous oxide nanoparticles
| Autor: | Anatoli Ianoul, Daniel Prezgot, Jason P. Coyle, Emma Jorgenson, Alexandra Gale-Mouldey |
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| Rok vydání: | 2020 |
| Předmět: |
Nanostructure
Materials science Nuclear Theory Shell (structure) Oxide Physics::Optics Nanoparticle Nanotechnology 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Catalysis Core (optical fiber) chemistry.chemical_compound chemistry Physics::Atomic and Molecular Clusters Materials Chemistry 0210 nano-technology Anisotropy Plasmon |
| Zdroj: | Journal of Materials Chemistry C. 8:1852-1863 |
| ISSN: | 2050-7534 2050-7526 |
| Popis: | Core/shell nanoparticles are of interest due to their attractive optical, electronic, and catalytic properties. By combining these core/shell features with physical anisotropy of the shell – by selectively capping only a portion of the core – nanostructures with unique properties can be formed. This work presents the synthesis and investigates the plasmonic properties of silver nanocube (AgNC)/cuprous oxide core/half-shell nanoparticles. The developed partial shell growth technique is suitable for any room temperature two-step core/shell synthesis. Using this technique AgNC/Cu2O core/shell nanoparticles were formed with a distinct half-shell morphology, either pyramidal or cubic, where the geometry of the half-shell can be precisely controlled by selecting specific synthesis conditions. Furthermore, the cuprous oxide half-shells induced hybridization of the plasmon modes in the silver core and thus enabled spatial and spectral manipulation of plasmon resonances for nanoparticles in suspension. The proposed core/half-shell morphology will be particularly advantageous for directed assembly, formation of dimers for SERS sensing, or as individual particles for catalysis. |
| Databáze: | OpenAIRE |
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