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Core-shell nanoparticle of silver coated with light-emitting rubrene: Surface plasmon enhanced photoluminescence
- Authors
- Han, Yoon Deok; Lee, Jin Woo; Park, Dong Hyuk; Yang, Seung Ho; Kim, Bo Kyung; Kim, Jeongyong; Joo, Jinsoo
- Issue Date
- 10월-2011
- Publisher
- ELSEVIER SCIENCE SA
- Keywords
- Nanoparticle; Core-shell; Rubrene; Silver; Surface plasmon; Photoluminescence
- Citation
- SYNTHETIC METALS, v.161, no.19-20, pp.2103 - 2106
- Indexed
- SCIE
SCOPUS
- Journal Title
- SYNTHETIC METALS
- Volume
- 161
- Number
- 19-20
- Start Page
- 2103
- End Page
- 2106
- ISSN
- 0379-6779
- 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. (C) 2011 Elsevier B.V. All rights reserved.
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