| 巯萘剂表面修饰的CdS纳米微粒的合成及发光特性 |
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| 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 |
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| 作者姓名： | 魏芳弟 于俊生 |
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| 作者单位： | 南京大学化学系, 南京 210093 |
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| 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 |
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| 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.
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| 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 |
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| 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 |
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| Authors: | WEI Fang-Di YU Jun-Sheng |
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| Affiliation: | Department of Chemistry, Nanjing University, Nanjing 210093, China |
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| 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. |
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| Keywords: | Cadmium sulfide Nanoparticle Thionalid Luminescence properties |
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