Abstract
Silver (Ag) nanoparticles (NPs) with a diameter of 50-100 nm were fabricated by using a reduction process of silver nitrate with sodium citrate. Using the Ag NPs, hybrid core (Ag)-shell (organic light-emitting rubrene) NPs were prepared through a hydrothermal process. The formation of hybrid core-shell NP of Ag-rubrene was confirmed through transmission electron microscope images. From ultraviolet and visible absorption spectra, the Ag and rubrene characteristic peaks were simultaneously observed for the core-shell NPs. Using a high-resolution laser confocal microscope (LCM), the photoluminescence (PL) intensity of the Ag-rubrene core-shell single NP was about 300 times higher than that of the rubrene single NP. This remarkable enhancement of PL efficiency in the core-shell single NP is due to the energy transfer effect in the surface plasmon resonance coupling between Ag and rubrene materials.
| Original language | English |
|---|---|
| Pages (from-to) | 2103-2106 |
| Number of pages | 4 |
| Journal | Synthetic Metals |
| Volume | 161 |
| Issue number | 19-20 |
| DOIs | |
| Publication status | Published - 2011 Oct |
Bibliographical note
Funding Information:This work was supported by a National Research Foundation (NRF) of Korea grant funded by the Korean government ( MEST ) (No. R0A-2007-000-20053-0 and No. 2009-89501 ).
Keywords
- Core-shell
- Nanoparticle
- Photoluminescence
- Rubrene
- Silver
- Surface plasmon
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering
- Metals and Alloys
- Materials Chemistry