Molecular nanocluster analogues of CdSe/ZnSe and CdTe/ZnTe core/shell nanoparticles
- 1 January 2004
- journal article
- Published by Royal Society of Chemistry (RSC) in Journal of Materials Chemistry
- Vol. 14 (4) , 654-660
- https://doi.org/10.1039/b312297b
Abstract
The ternary II–II′–VI nanoclusters [(N,N′-tmeda)5Zn5Cd11E13(EPh)6(thf)n] (1, E = Se, n = 2; 2, E = Te, n = 1) have been synthesized by the reaction of bis(trimethylsilylchalcogenolate)zinc(II) complexes in the presence of PhESiMe3 and solubilizing phosphine ligands. Structural characterization of the complexes by X-ray crystallography revealed that the clusters consist of CdE cores whose surfaces are stabilized by [(N,N′-tmeda)5ZnE2] units, and hence can be described as molecular analogues of core/shell nanoparticles. The optical properties of the clusters exhibit the effects of quantum confinement and are luminescent at room temperature with emission occurring near the absorption edge. Solid-state thermal decomposition of 1 and 2 results in the formation of ternary ZnCdE materials with the same metal stoichiometry as the cluster precursors.Keywords
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