物理化学学报 >> 2005, Vol. 21 >> Issue (02): 113-116.doi: 10.3866/PKU.WHXB20050201

通讯    下一篇

高温热解法制备硒化镉纳米晶

陈书堂; 徐冀川; 汪裕萍; 力虎林   

  1. 兰州大学化学化工学院,兰州　730000；　北京大学物理学院电子显微镜实验室，北京　100871
  • 收稿日期:2004-10-28 修回日期:2004-11-30 发布日期:2005-02-15
  • 通讯作者: 力虎林 E-mail:lihl@lzu.edu.cn

Synthesis of CdSe Nanocrystals by the Pyrolysis Methods

CHEN Shu-Tang; XU Ji-Chuan; WANG Yu-Ping; LI Hu-Lin   

  1. College Chemistry and Chemical Engineering, Lanzhou University, Lanzhou　730000;　Electron Microscopy Laboratory, School of Physics, Peking University, Beijing　100871
  • Received:2004-10-28 Revised:2004-11-30 Published:2005-02-15
  • Contact: LI Hu-Lin E-mail:lihl@lzu.edu.cn

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摘要： 以脂肪酸和三辛基氧化膦为表面活性剂,采用高温热解硒与镉的前聚体,制备出分散性好的CdSe纳米晶.吸收光谱和荧光光谱研究表明,控制反应时间可以改变CdSe纳米晶的荧光强度.

关键词: CdSe, 纳米晶, 表面活性剂, 荧光光谱

Abstract: Monodisperse surfactant-capped CdSe nanocrystals were prepared by the pyrolysis of ligands of Se and Cd in a hot coordinating solvent. The CdSe nanocrystals synthesized at different reaction times have been characterized by UV-Vis and fluorescence (FL) spectra. Results of UV-Vis and FL spectra showed that the CdSe nanocrystals prepared at the reaction time of 15 min exhibited the largest fluorescence intensity.

Key words: CdSe, Nanocrystals, Surfactants, Fluorescence spectra