SIOC English
化学学报
高级检索

化学学报 ›› 2006, Vol. 64 ›› Issue (22): 2265-2270. 上一篇    下一篇

研究论文

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

梅芳1, 何锡文1, 李娟1, 李文友*,1, 张玉奎*,1,2   

  1. (1南开大学化学系 天津 300071)
    (2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)
  • 投稿日期:2005-11-19 修回日期:2006-04-29 发布日期:2006-11-28
  • 通讯作者: 李文友

Influence Factors for the Synthesis of Water-soluble CdSe/CdS Core-shell Nanoparticles and Their Effects on the Spectral Characterization of CdSe/CdS

MEI Fang1; HE Xi-Wen1; LI Juan1; LI Wen-You*,1; ZHANG Yu-Kui*,1,2   

  1. (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)
  • Received:2005-11-19 Revised:2006-04-29 Published:2006-11-28
  • Contact: LI Wen-You

PDF

844

被引次数

65 | 5

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.

关键词: 纳米粒子, 核壳结构, CdSe/CdS, 半胱氨酸

CdSe nanoparticles capped by CdS were synthesized in the aqueous solution at room temperature 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.

Key words: nanoparticle, core/shell structure, CdSe/CdS, cysteine