| 表面活性剂对CdSe量子点荧光性能的影响 |
| Effect of Surfactant on Fluorescence Properties of CdSe Quantum Dots |
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| 摘要: 通过添加不同类型的表面活性剂在水相中制备了CdSe量子点。用透射电子显微镜(TEM)、X射线衍射(XRD)、X-射线光电子能谱(XPS)对其进行了表征，并用紫外-可见(UV-Vis)和荧光(PL)分光光度法研究了不同类型的表面活性剂对CdSe量子点吸收光谱和荧光光谱的影响。结果表明，加入长链的非离子型和阴离子型表面活性剂制备的CdSe量子点颗粒只有几个纳米，分散性好，量子点的荧光强度也有明显的增强，而加入阳离子表面活性剂制备的量子点颗粒团聚明显，其荧光出现淬灭。 |
| 关键词: 表面活性剂 CdSe量子点 荧光 |
| 基金项目: |
| Abstract: CdSe quantum dots were prepared in aqueous phase by addition of different surfactants and were characterized by TEM, XRD, XPS. The effect of the surfactant on the spectra of CdSe quantum dots was studied with the UV-Visible (UV-Vis) and photoluminenscence (PL) spectroscopy. The results show that several nanometer-sized, well-dispersed, fluorescence-enhanced CdSe quantum dots could be obtained by addition of long-chain anionic and non-ionic surfactants. However, the fluorescence of CdSe quantum dots is quenched and the particle aggregation occurs easily by addition of cationic surfactants in the preparation. |
| Keywords: surfactants CdSe quantum dots fluorescence |
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| 胡振龙,杜 锴,黄正喜.表面活性剂对CdSe量子点荧光性能的影响[J].无机化学学报,2012,28(3):509-514. |
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