高等学校化学学报 ›› 2003, Vol. 24 ›› Issue (5): 884.

• 论文 • 上一篇    下一篇

巯萘剂表面修饰的CdS纳米微粒的合成及发光特性

魏芳弟, 于俊生   

  1. 南京大学化学系, 南京 210093
  • 收稿日期:2001-10-10 出版日期:2003-05-24 发布日期:2003-05-24
  • 通讯作者: 于俊生(1953年出生),男,博士,副教授,从事分子光谱及分析研究.
  • 基金资助:

    国家自然科学基金(批准号:20275016);南京大学学科发展项目(批准号:2000)资助

Synthesis and Luminescence Properties of Thionalid-stabilized CdS Nanoparticles

WEI Fang-Di, YU Jun-Sheng   

  1. Department of Chemistry, Nanjing University, Nanjing 210093, China
  • Received:2001-10-10 Online:2003-05-24 Published:2003-05-24

摘要: 用疏萘剂(TN)作为表面修饰剂,在甲醇溶液中合成了CdS/TN纳米微粒,用TEM测得纳米微粒呈球形,其粒径约10nm,吸收光谱和荧光光谱研究表明,[S2-]/[TN]浓度比、TN和镉离子的浓度对CdS/TN纳米微粒的粒径及发光特性具有显著影响,且随着条件的改变,CdS/TN纳米微粒的发射波长红移100nm,表现出明显的量子尺寸特性.XPS显示所制得表面修饰纳米微粒的核为CdS.

关键词: 硫化镉, 纳米微粒, 巯萘剂, 发光特性

Abstract: The thionalid-stabilized CdS nanoparticles (named as CdS/thionalid) have been synthesized in methanol by colloidal solution method. The images of TEM demonstrate that the average size of CdS/ thionalid nanoparticles is about 10 nm. Spectra of absorption and fluorescence show that both the ratio of [S2-]/[TN] and concentrations of thionalid and cadmium ion have influence on the size and luminescence properties of the nanoparticles. On varying experimental conditions, the maximum emission wavelength of CdS/thionalid nanoparticles has the largest red shift of 100 nm, and quantum confinement effect can be obviously observed. Values of XPS confirm that the core of CdS/thionalid nanoparticles is CdS.

Key words: Cadmium sulfide, Nanoparticle, Thionalid, Luminescence properties

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