| 具有光谱可调、高量子产率和稳定性的水溶性CdTe/Cd(OH)2核壳结构纳米粒子的可控水相合成 |
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| 引用本文： | 蔡朝霞,陈英军,严秀平.具有光谱可调、高量子产率和稳定性的水溶性CdTe/Cd(OH)2核壳结构纳米粒子的可控水相合成[J].中国化学,2008,26(10):1848-1852. |
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| 作者姓名： | 蔡朝霞 陈英军 严秀平 |
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| 作者单位： | 南开大学化学学院分析科学研究中心 |
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| 摘 要： | 建立了一种简便的、以易得的无机盐为反应前体的水相法制备水溶性、高量子产率以及良好稳定性的CdTe/Cd(OH)2核壳结构量子点。本方法可以通过控制Cd(OH)2 壳层结构的厚度，使不同粒径量子点的荧光发射光谱由蓝绿色渐变到橙红色。利用透射电镜、X射线粉末衍射光谱、荧光光谱以及紫外可见光谱对该CdTe/Cd(OH)2核壳结构量子点进行了表征。CdTe/Cd(OH)2核壳结构量子点所具备的良好的水溶性可望应用于生物标记。本方法简便、反应条件温和并且容易操作，为无机金属化物包覆量子点提供了一种简便的途径。
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| 关 键 词： | 核壳结构量子点、荧光、 发射光谱可调 |
| 收稿时间： | 2007-10-14 |
| 修稿时间： | 2008-1-2 |
Facile Size‐controllable Aqueous Synthesis of Water Soluble CdTe/Cd(OH)2 Core/Shell Nanoparticles with Tunable Optical Property,High Quantum Yield and Good Stability |
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| Zhao‐Xia CAI,Ying‐Jun CHEN,Xiu‐Ping YAN.Facile Size‐controllable Aqueous Synthesis of Water Soluble CdTe/Cd(OH)2 Core/Shell Nanoparticles with Tunable Optical Property,High Quantum Yield and Good Stability[J].Chinese Journal of Chemistry,2008,26(10):1848-1852. |
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| Authors: | Zhao‐Xia CAI Ying‐Jun CHEN Xiu‐Ping YAN |
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| Institution: | 1. Education Ministry Key Laboratory of Functional Polymer Materials;2. Research Center for Analytical Sciences, College of Chemistry, Nankai University, Tianjin 300071, China;3. College of Food Science and Technology, Huazhong Agricultural University, Wuhan, Hubei 430070, China;4. Tel.: 0086‐022‐23506075;5. Fax: 0086‐022‐23506075 |
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| Abstract: | A facile procedure was developed to prepare size‐tunable and water soluble CdTe/Cd(OH)2 core/shell nanoparticles with high quantum yields and good stability using inexpensive inorganic precursors (CdCl2 and elemental Te). The emission colors of the prepared CdTe/Cd(OH)2 core/shell nanoparticles can be readily tuned from cyan to salmon pink by varying incubation time to control the growth of the Cd(OH)2 shell onto the CdTe nanoparticles. The CdTe/Cd(OH)2 core/shell nanoparticles were characterized by transmission electron microscopy, high‐resolution transmission electron microscopy, X‐ray powder diffraction spectrometry, photoluminescence and UV‐Vis spectrometry. The good water‐soluble nature of the CdTe/Cd(OH)2 core/shell nanoparticles offers great potentiality for their bio‐labeling application. This approach is simple, mild and readily scaled up, affording a simple way for synthesis of size‐tunable inorganic metal hydroxide capped core/shell nanoparticles. |
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| Keywords: | core/shell nanoparticle fluorescence emission wavelength tunable |
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