The preparation of CdTe nanoparticles and CdTe nanoparticle-labelled microspheres for biological applications. |
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Authors: | Xinyan Wang Qiang Ma Bing Li Yabing Li Xingguang Su |
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Affiliation: | Department of Analytical Chemistry, College of Chemistry, Jilin University, Changchun 130012, People's Republic of China. |
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Abstract: | Different sizes of CdTe semiconductor nanoparticles were prepared in aqueous solution. These nanoparticles exhibit narrow fluorescence with full width at half-maximum (FWHM) of 35-45 nm that spans the visible spectrum, and they also have high PL quantum yield with high resistance to photodegradation. In addition, CdTe quantum dot (QD)-labelled microspheres, comprising polystyrene (PS) cores and CdTe/polyelectrolyte (PE) shells, were also prepared by the layer-by-layer technique in this paper. The optical properties of the CdTe nanoparticles and CdTe-labelled microspheres were investigated by UV-Visible absorption and luminescence spectroscopy, and fluorescence microscopy was employed for microscopic identification behaviour of the luminescent microspheres. |
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Keywords: | quantum dots CdTe‐labelled microspheres biological applications |
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