| Chemically binding Eu^3＋ onto CdS semiconductor nanoparticle surface |
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| 作者姓名： | Guang Hua Zhu Krystyna Tomsia Hong Yu Motlan Ewa M. Goldys |
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| 作者单位： | Department of Physics Macquarie University Sydney 2109 NSW Australia，Department of Physics Macquarie University Sydney 2109 NSW Australia，Department of Physics Macquarie University Sydney 2109 NSW Australia |
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| 基金项目： | This work was supported by Australia Research Council （Project ID： DP0451755） and the Chinese Southeast University＇s Huaying Culture and Education Foundation. We thank Debra Birch in the Microscopy Unit of Biological Sciences of Maequarie University for the TEM and SEM characterisation of the nanoparticles. |
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| 摘 要： | Europium ions were chemically bound to CdS nanoparticles surface by diethylenetri-aminepentaacetate (DTPA, 1) in a two-step synthetic route. First 1 was applied to chelate with cadmium on the surface of cadmium-rich CdS nanoparticles and act as a capping agent. Further, the purified 1-capped particles were used to bind with Eu~3 . The purified and redispersed particles were characterized by photoluminescence spectroscopy, TEM and SEM. It was observed that Eu~3 on the nanoparticle surface significantly increased the band gap emission and decreased the surface emission intensity of the CdS nanoparticles.
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| 关 键 词： | CdS半导体 纳米颗粒 表面 铕离子 结合 EDPA |
| 收稿时间： | 2006-12-04 |
Chemically binding Eu3+ onto CdS semiconductor nanoparticle surface |
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| Guang Hua Zhu Krystyna Tomsia Hong Yu Motlan Ewa M. Goldys.Chemically binding Eu3+ onto CdS semiconductor nanoparticle surface[J].Chinese Chemical Letters,2007,18(5):581-584. |
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| Authors: | Guang Hua Zhu Krystyna Tomsia Hong Yu Motlan Ewa M Goldys |
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| Institution: | 1. School of Public Health, Southeast University, Nanjing 210009, China;2. Department of Physics, Macquarie University, Sydney, 2109 NSW, Australia |
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| Abstract: | Europium ions were chemically bound to CdS nanoparticles surface by diethylenetri-aminepentaacetate (DTPA, 1) in a two-step synthetic route. First 1 was applied to chelate with cadmium on the surface of cadmium-rich CdS nanoparticles and act as a capping agent. Further, the purified 1-capped particles were used to bind with Eu~3 . The purified and redispersed particles were characterized by photoluminescence spectroscopy, TEM and SEM. It was observed that Eu~3 on the nanoparticle surface significantly increased the band gap emission and decreased the surface emission intensity of the CdS nanoparticles. |
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| Keywords: | Cadmium sulphide DTPA Semiconductors Nanoparticles |
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