| 水溶性CdSe/CdS核壳纳米粒子制备的影响因素及其对CdSe/CdS光谱特性的影响 |
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| 引用本文： | 梅芳,何锡文,李娟,李文友,张玉奎.水溶性CdSe/CdS核壳纳米粒子制备的影响因素及其对CdSe/CdS光谱特性的影响[J].化学学报,2006,64(22):2265-2270. |
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| 作者姓名： | 梅芳 何锡文 李娟 李文友 张玉奎 |
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| 作者单位： | 南开大学化学系,天津,300071;南开大学化学系,天津,300071;中国科学院大连化学物理研究所,国家色谱研究分析中心,大连,116011 |
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| 基金项目： | 973计划(No.2006CB705703)，天津市自然科学基金(No.06YFJMJC02800)，湖南大学化学生物传感与计量学国家重点实验室开放基金(No.2005009)资助项目. |
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| 摘 要： | 以半胱氨酸镉配合物为前体, 在水溶液中合成CdSe纳米粒子, 以CdS对其表面进行修饰, 得到具有核壳结构的CdSe/CdS 纳米粒子. 采用XRD, TEM表征其结构及形貌; 以荧光光谱研究了时间、pH值、壳量、壳前体加入方式、稳定剂用量等因素对CdSe/CdS光谱特性的影响.
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| 关 键 词： | 纳米粒子 核壳结构 CdSe/CdS 半胱氨酸 |
| 收稿时间： | 11 19 2005 12:00AM |
| 修稿时间： | 2005-11-192006-08-21 |
Influence Factors for the Synthesis of Water-soluble CdSe/CdS Core-shell Nanoparticles and Their Effects on the Spectral Characterization of CdSe/CdS |
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| MEI Fang,HE Xi-Wen,LI Juan,LI Wen-You,ZHANG Yu-Kui.Influence Factors for the Synthesis of Water-soluble CdSe/CdS Core-shell Nanoparticles and Their Effects on the Spectral Characterization of CdSe/CdS[J].Acta Chimica Sinica,2006,64(22):2265-2270. |
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| Authors: | MEI Fang HE Xi-Wen LI Juan LI Wen-You ZHANG Yu-Kui |
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| Institution: | (1 Department of Chemistry, Nankai University, Tianjin 300071)(2 National Chromatographic R. & A. Center, Dalian Institute of Chemical Physics, The Chinese Academy of Sciences, Dalian 116011) |
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| Abstract: | CdSe nanoparticles capped by CdS were synthesized in the aqueous solution at room tempera- ture using cysteine (Cys) as the stabilizer. X-ray powder diffraction and transmission electron microscopy were used to analyze the core/shell nanoparticle structure and determine their average size, size distribution and shape. Fluorescence spectra were used to probe the effect of time, pH, quantity of shell, adding rate of shell precursors and the quantity of Cys on the spectral characterization of CdSe/CdS. |
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| Keywords: | nanoparticle core/shell structure CdSe/CdS cysteine |
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