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化学学报
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化学学报 ›› 2005, Vol. 63 ›› Issue (14): 1303-1306. 上一篇    下一篇

研究论文

一种Q态纳米CdS的新型制备法——聚合物分散法

闫云辉，章伟光*，范军，纪欣   

  1. (华南师范大学化学与环境学院 广州 510631)
  • 投稿日期:2004-10-29 修回日期:2005-03-28 发布日期:2010-12-10
  • 通讯作者: 章伟光

New Approach to Prepare Q-CdS Nanoparticles: Polymer Dispersion Method

YAN Yun-Hui, ZHANG Wei-Guang*, FAN Jun, JI Xin   

  1. (College of Chemistry and Environment, South China Normal University, Guangzhou 510631)
  • Received:2004-10-29 Revised:2005-03-28 Published:2010-12-10
  • Contact: ZHANG Wei-Guang

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被引次数

32 | 5

采用一种Q态CdS的新型制备法——聚合物分散法, 即用水溶性聚合物溶液作为分散剂, 用2-巯基乙醇(或十二硫醇)作表面修饰剂, 在聚合物网络中构筑出四种粒径的、单分散性的Q-CdS. 通过UV-Vis光谱和TEM考察了Q-CdS的粒径及分布情况, 并用FL光谱研究了不同尺寸的Q-CdS的荧光性能. 结果表明, 采用聚合物分散法可以方便、快捷地得到粒径小且分布窄的Q-CdS纳米粒子, 这些粒子在紫外光谱及荧光光谱上均表现出明显的量子尺寸效应.

关键词: Q-CdS, 聚合物分散法, 制备, 量子尺寸效应

Polymer dispersion method, a new approach to obtain Q-CdS nanoparticles, has been presented. Four kinds of monodisperse Q-CdS with different sizes were constructed by using water soluble polymer as dispersion agents and 2-mercaptoethanol or dodecyl mercaptan as surface modifier in polymer networks. UV-vis spectra and TEM were used to determine particle size and observe the size distribution, and fluorescence properties of Q-CdS with different sizes were studied. Obtained results indicated that different Q-CdS nanoparaticles with small size and narrow distribution were quickly prepared by polymer dispersion method, and these samples showed obvious quantum size effect on UV-vis and fluorescent spectra.

Key words: Q-CdS, polymer dispersion method, preparation, quantum size effect