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巯萘剂表面修饰的CdS纳米微粒的合成及发光特性
引用本文:魏芳弟,于俊生. 巯萘剂表面修饰的CdS纳米微粒的合成及发光特性[J]. 高等学校化学学报, 2003, 24(5): 884-887
作者姓名:魏芳弟  于俊生
作者单位:南京大学化学系, 南京 210093
基金项目: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
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  
文章编号:0251-0790(2003)05-0884-04
收稿时间:2001-10-10

Synthesis and Luminescence Properties of Thionalid-stabilized CdS Nanoparticles
WEI Fang-Di,YU Jun-Sheng. Synthesis and Luminescence Properties of Thionalid-stabilized CdS Nanoparticles[J]. Chemical Research In Chinese Universities, 2003, 24(5): 884-887
Authors:WEI Fang-Di  YU Jun-Sheng
Affiliation:Department of Chemistry, Nanjing University, Nanjing 210093, China
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.
Keywords:Cadmium sulfide  Nanoparticle  Thionalid  Luminescence properties
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