Cadmium Sulfide Silver Nanoplate Hybrid Structure: Synthesis and Fluorescence Enhancement
| Autor: | Chun-Yuen Wong, Sung-Kay Chiu, Edwin Yue-Bun Pun, Shangxin Lin, Pak-Kei Pat, Matthew Man-Kin Wong |
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| Rok vydání: | 2011 |
| Předmět: |
Nanostructure
Materials science Photoluminescence Surface plasmon Inorganic chemistry Nanoparticle Photochemistry Cadmium sulfide Surfaces Coatings and Films Electronic Optical and Magnetic Materials chemistry.chemical_compound Crystallinity General Energy chemistry Physical and Theoretical Chemistry Spectroscopy Localized surface plasmon |
| Zdroj: | The Journal of Physical Chemistry C. 115:21604-21609 |
| ISSN: | 1932-7455 1932-7447 |
| DOI: | 10.1021/jp2059326 |
| Popis: | Semiconductor–noble metal hybrid nanostructures are of current interest in the development of bioimaging agents. To enhance photoluminescence of cadmium sulfide nanoparticles via surface plasmon mode coupling, cadmium sulfide conjugated silver nanoplates (denoted as CdS-Ag NP) have been prepared by a forward–reverse cation exchange method. The morphology, crystallinity, and atomic composition of the CdS-Ag NP have been investigated by energy dispersive X-ray spectroscopy and high-resolution transmission electron spectroscopy, and the CdS-Ag NP can be described as Cd2+-rich CdS nanoparticles covalently bonded to the surfactant of Ag nanoplates. Photoluminescence enhancement of CdS measured is attributed to the matching between the emission bands of cadmium sulfide and the tailor-made localized surface plasmons resonance bands provided by the Ag NP. Application of the CdS-Ag NP in cell imaging has also been demonstrated. |
| Databáze: | OpenAIRE |
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