| CdSe量子点/聚酰胺-胺树形分子纳米复合材料的制备与表征 |
| |
| 引用本文： | 靳玉娟,罗运军,李国平,李杰,卢文婷. CdSe量子点/聚酰胺-胺树形分子纳米复合材料的制备与表征[J]. 北京理工大学学报, 2010, 30(7): 858-863 |
| |
| 作者姓名： | 靳玉娟 罗运军 李国平 李杰 卢文婷 |
| |
| 作者单位： | 北京理工大学,材料学院,北京,100081;北京理工大学,材料学院,北京,100081;北京理工大学,材料学院,北京,100081;北京理工大学,材料学院,北京,100081;北京理工大学,材料学院,北京,100081 |
| |
| 摘 要： | 以NaHSe为硒源,以聚酰胺-胺树形分子(PAMAM)为内模板,在水溶液中制备了尺寸均一、分散良好、荧光性强的CdSe量子点.分别用紫外-可见吸收光谱、荧光发射光谱和高分辨透射电镜对树形分子包裹的CdSe量子点进行表征.结果表明:在紫外光的激发下,树形分子与CdSe量子点间发生了强烈的界面电荷转移作用.质子化后整代数树形分子模板作用优于半代数树形分子.高代数树形分子的模板作用优于低代数树形分子.pH在7.5时,纳米簇粒径小而均匀,且溶液稳定性高.改变Cd2+与PAMAM物质的量比,可得到一系列尺寸不同、发光颜色不同的CdSe量子点.0℃低温时制备的量子点光致发光效率最高.
|
| 关 键 词： | CdSe量子点 聚酰胺-胺树形分子 光致发光 发光可调 |
| 收稿时间： | 2009-10-21 |
Preparation and Characterization of CdSe Quantum Dots/Poly (Amido Amine) Dendrimer Nano-Composites |
| |
| JIN Yu-juan,LUO Yun-jun,LI Guo-ping,LI Jie and LU Wen-ting. Preparation and Characterization of CdSe Quantum Dots/Poly (Amido Amine) Dendrimer Nano-Composites[J]. Journal of Beijing Institute of Technology(Natural Science Edition), 2010, 30(7): 858-863 |
| |
| Authors: | JIN Yu-juan LUO Yun-jun LI Guo-ping LI Jie LU Wen-ting |
| |
| Affiliation: | JIN Yu-juan,LUO Yun-jun,LI Guo-ping,LI Jie,LU Wen-ting(School of Material Science and Engineering,Beijing Institute of Technology,Beijing 100081,China) |
| |
| Abstract: | Uniform,well-dispersed and strong photoluminescent CdSe quantum dots(QDs) were prepared taking poly(amido amine)(PAMAM) dendrimers as inner templates in water with NaHSe as Se resources.The properties of CdSe QDs encapsulated in dendrimers were characterized by UV-Vis absorption spectra,photoluminescence(PL) emission spectra and high resolve transmission electron microscope(HRTEM).The results were: strong interface charge transfer function happens between dendrimers and CdSe QDs when irradiated under UV lig... |
| |
| Keywords: | CdSe quantum dots(QDs) PAMAM dendrimers photoluminescence tunable colors |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《北京理工大学学报》浏览原始摘要信息 |
|
点击此处可从《北京理工大学学报》下载全文 |
|
