Citation: 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. doi: 10.1016/j.cclet.2007.03.034 shu

Chemically binding Eu³⁺ onto CdS semiconductor nanoparticle surface

a School of Public Health, Southeast University, Nanjing 210009, China;
b Department of Physics, Macquarie University, Sydney, 2109 NSW, Australia

Received Date: 4 December 2006

Fund Project: 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 Macquarie University for the TEM and SEM characterisation of the nanoparticles.

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 Eu³⁺. The purified and redispersed particles were characterized by photoluminescence spectroscopy, TEM and SEM. It was observed that Eu³⁺ on the nanoparticle surface significantly increased the band gap emission and decreased the surface emission intensity of the CdS nanoparticles.
- Cadmium sulphide,
- DTPA,
- Semiconductors,
- Nanoparticles
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