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

以油胺-硒化氢复合物为前体的脂溶性量子点的制备

刘剑波, 羊小海, 王柯敏, 谭蔚泓, 李朝辉, 张鹏飞, 王东   

  1. 湖南大学化学生物传感与计量学国家重点实验室, 化学化工学院, 生物医学工程中心, 生物纳米与分子工程湖南省重点实验室, 长沙 410082
  • 收稿日期:2008-08-19 修回日期:1900-01-01 出版日期:2008-12-10 发布日期:2008-12-10
  • 通讯作者: 王柯敏

Preparation of Hydrophobic Quantum Dots Using Oleylamine-hydrogen Selenide Complex as Precursor

LIU Jian-Bo, YANG Xiao-Hai, WANG Ke-Min*, TAN Wei-Hong, LI Zhao-Hui, ZHANG Peng-Fei, WANG Dong   

  1. State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Biomedical Engineering Center, Key Laboratory for Bio-Nanotechnology and Molecular Engineering of Hunan Province, Hunan University, Changsha 410082, China
  • Received:2008-08-19 Revised:1900-01-01 Online:2008-12-10 Published:2008-12-10
  • Contact: WANG Ke-Min

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被引次数

18

摘要： 报道了一种以油胺-硒化氢复合物为前体的脂溶性CdSe量子点的制备方法. 将新制备的H2Se气体通入到油胺中, 得到油胺-硒化氢复合物, 以此复合物作为前体, 采用溶剂热合成法制备了CdSe量子点, 并采用荧光光谱、电镜以及X射线衍射对其进行了表征. 结果表明, CdSe量子点为立方晶型, 荧光半峰宽较窄(25~40 nm), 荧光量子产率可达23%, 并且荧光发射光谱从480到610 nm连续可调. 该方法无须使用三烷基膦, 是一种价廉环保的量子点制备方法.

关键词: 硒化镉, 量子点, 制备, 油胺-硒化氢复合物

Abstract: A novel route was developed to synthesize hydrophobic quantum dots(QDs) using oleylamine-hydrogen selenide complex as the precursor. Fresh H2Se gas was introduced into oleylamine to form oleylamine-hydrogen selenide complex, and the complex was used as the precursor to prepare QDs by hot-injection solvothermal synthesis. The obtained QDs were characterized by photoluminescence spectroscopy, transmission electron microscopy and X-ray diffraction. The results show that the proposed method led to the formation of cubic CdSe QDs with narrow fluorescence full-width at half-maximum(25—40 nm), high photoluminescence quantum yield(up to 23%), and a broad emission spectra tunable from 480—610 nm. This is a low cost and environmentally benign technique for QDs preparation due to the absence of trialkylphosphine.

Key words: Cadmium selenide, Quantum dot, Preparation, Oleylamine-hydrogen selenide complex

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