| ZnSe;Cu纳米晶/聚电解质多层膜制备和结构研究 |
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| 引用本文： | 张皓,郝恩才,杨柏,沈家骢.ZnSe;Cu纳米晶/聚电解质多层膜制备和结构研究[J].高等学校化学学报,2000,21(11):1766-1770. |
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| 作者姓名： | 张皓 郝恩才 杨柏 沈家骢 |
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| 作者单位： | 教育部超分子结构与谱学开放实验室, 吉林大学化学系, 长春 130023 |
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| 基金项目： | 中国科学院资助项目，59773014， |
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| 摘 要： | 采用分子沉积方法制备了ZnSe;Cu纳米晶/聚电解质多层膜,通过X射线光电子能谱(XPS)和透射电镜(TEM)等方法对薄膜的组成及结构进行了表征.XPS结果证实了回流处理对ZnSe;Cu微粒的表面结构以及铜离子价态的影响,从而很好地解释了经表面修饰后,微粒荧光增强的现象.TEM结果确定ZnSe;Cu的平均尺寸为3nm.X射线粉末衍射结果进一步确认ZnSe;Cu具有纤锌矿晶体结构.
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| 关 键 词： | 纳米晶 表面修饰 自组装 ZnSe Cu |
| 收稿时间： | 1999-07-20 |
Fabrication and Structure Studies of ZnSe:Cu/Polyelectrolytes Multilayer Films |
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| ZHANG Hao,HAO En-Cai,YANG Bai,SHEN Jia-Cong.Fabrication and Structure Studies of ZnSe:Cu/Polyelectrolytes Multilayer Films[J].Chemical Research In Chinese Universities,2000,21(11):1766-1770. |
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| Authors: | ZHANG Hao HAO En-Cai YANG Bai SHEN Jia-Cong |
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| Institution: | Key Laboratory of Supramolecular Structure & Spectroscopy of Educational Ministry; Department of Chemistry, Jilin University, Changchun 130023 |
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| Abstract: | Cu doped ZnSe nanocrystals were synthesized in aqueous solution, the optical properties of which could be controlled accordingly. By the layer-by-layer self-assembly method, the ZnSe;Cu/polyelectrolytes multilayer film was fabricated successfully, which was characterized by UV-Vis absorption spectra, XPS and TEM et al .. The surface structure of nanoparticles and the valence of copper could be controlled by the surface modification with reflux, indicated by the increasing of fluorescence efficiency and the XPS results. Moreover, the average size of ZnSe;Cu nanocrystals was found to be~3 nm without obvious aggregation. The films assembled in this way can make brighter luminescence possible. |
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| Keywords: | Nanocrystals Surface modification Self-assembly ZnSe Cu |
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