用于生物应用的碲化镉纳米颗粒及碲化镉纳米颗粒标记微球的制备。
The preparation of CdTe nanoparticles and CdTe nanoparticle-labelled microspheres for biological applications.
作者信息
Wang Xinyan, Ma Qiang, Li Bing, Li Yabing, Su Xingguang
机构信息
Department of Analytical Chemistry, College of Chemistry, Jilin University, Changchun 130012, People's Republic of China.
出版信息
Luminescence. 2007 Jan-Feb;22(1):1-8. doi: 10.1002/bio.917.
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.
在水溶液中制备了不同尺寸的碲化镉半导体纳米颗粒。这些纳米颗粒呈现出窄荧光，半高宽（FWHM）为35 - 45纳米，涵盖可见光谱，并且它们还具有高的光致发光（PL）量子产率以及对光降解的高抗性。此外，本文还通过层层技术制备了由聚苯乙烯（PS）核和碲化镉/聚电解质（PE）壳组成的碲化镉量子点（QD）标记微球。通过紫外 - 可见吸收光谱和发光光谱研究了碲化镉纳米颗粒和碲化镉标记微球的光学性质，并采用荧光显微镜对发光微球的微观识别行为进行研究。
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