物理化学学报 >> 2003, Vol. 19 >> Issue (01): 9-12.doi: 10.3866/PKU.WHXB20030103

研究论文 上一篇    下一篇

纳米CdSe与聚4-乙烯基吡啶盐的复合与表征

宋会花;方震;郭海清   

  1. 北京大学化学与分子工程学院, 稀土材料化学及应用国家重点实验室, 北京 100871
  • 收稿日期:2002-04-15 修回日期:2002-06-07 发布日期:2003-01-15
  • 通讯作者: 郭海清 E-mail:guohq@pku.edu.cn

Synthesis and Characterization of CdSe/Poly (4-vinylpyridine) Quaternary Ammonium Nanocomposite

Song Hui-Hua;Fang Zhen;Guo Hai-Qing   

  1. State Key Laboratory of Rare Earth Materials Chemistry and Application, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871
  • Received:2002-04-15 Revised:2002-06-07 Published:2003-01-15
  • Contact: Guo Hai-Qing E-mail:guohq@pku.edu.cn

摘要: 用巯基乙酸作稳定剂在水相中合成了CdSe纳米颗粒. 聚4-乙烯基吡啶季铵盐(PVPNI)通过静电作用与CdSe纳米颗粒复合形成了纳米复合材料.该复合材料通过红外光谱数据(IR)、电感耦合等离子发射光谱(ICP-AES)、透射电镜(TEM)等方法进行了表征,并通过紫外可见吸收光谱(UV-Vis)和荧光光谱(PL)对其光学性质进行了研究.结果表明,复合材料的形成,改善了纳米CdSe的分散性,并提高了纳米CdSe的荧光强度.

关键词: 纳米复合材料, CdSe, 聚4-乙烯基吡啶季铵盐, 荧光, 能量转移

Abstract: A stable CdSe nanoparticle hydrosol was prepared upon addition of mercaptoacetic acid as a stabilizer. A nanocomposite was formed based on electrostatic interactions by poly (4-vinylpyridine) quaternary ammonium with CdSe nanoparticle. The formation of nanocomposite was confirmed and characterized by infrared spectrum (IR), inductively coupled plasma atomic emission spectroscopy (ICP-AES), transmission electron microscopy (TEM),UV-Vis spectrophotomery (UV-Vis), photoluminescence (PL) spectrophotometry, etc.The dispersive property and luminescence intensity of CdSe nanocrystals were improved and increased by the formation of the composite.

Key words: Nanocomposite, CdSe, Poly(4-vinylpyridine) quaternary ammonium,  Photoluminescence(PL), Energy transfer