高等学校化学学报

高等学校化学学报

• 研究论文 • 上一篇    下一篇

水溶性量子点的制备及其与壳聚糖衍生物的自组装

徐海娥, 闫翠娥   

  1. 湖北大学化学化工学院, 武汉 430062
  • 收稿日期:2006-06-27 修回日期:1900-01-01 出版日期:2007-01-10 发布日期:2007-01-10
  • 通讯作者: 闫翠娥

Preparation of Water-soluble Quantum Dots and Their Self-assembly with Chitosan Derivatives

XU Hai-E, YAN Cui-E   

  1. Faculty of Chemistry and Chemical Engineering, Hubei University, Wuhan 430062, China
  • Received:2006-06-27 Revised:1900-01-01 Online:2007-01-10 Published:2007-01-10
  • Contact: YAN Cui-E

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被引次数

22

摘要： 以3-巯基丙酸(HS-CH2CH2COOH)为稳定剂, 制备了水溶性的碲化镉(CdTe)量子点(QDs), 考察了制备条件对QDs荧光性能的影响及CdTe QDs与壳聚糖及叶酸和聚乙二醇改性的壳聚糖的自组装. 研究发现, 壳聚糖及改性壳聚糖与QDs的复合物荧光强度相对纯的CdTe QDs明显增强, 且QDs被包裹在内核, 复合粒子呈明显的核/壳结构. 改性壳聚糖/QDs复合物较小且尺寸分布更为均一.

关键词: 水溶性量子点, 壳聚糖, 壳聚糖衍生物, 自组装

Abstract: Water-soluble CdTe quantum dots(QDs) were prepared by using 3-mercaptopropionic acid as the stabilizer, and their preparation parameters were optimized. Self-assembling of QDs with chitosan and folic acid(FA) and poly(ethylene glycol)(PEG) modified chitosan via electrostatic interaction was also investigated. The results demonstrate that fluorescence intensity of chitosan/QDs complex was much higher than that of QDs themselves. The complex shows a clear core/shell structure, and QDs were located in the core. The modified chitosan/QDs complexes were smaller and more uniform than those of unmodified chitosan.

Key words: Water-soluble quantum dots, Chitosan, Chitosan derivative, Self-assembly

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