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上转换材料NaYF4∶Er3+,Yb3+纳米晶的制备

孙墨杰1, 贾若琨1, 张晓君1, 张宇帅1, 白玉白2, 任汉涛1   

  1. 1. 东北电力大学 化学工程学院, 吉林 吉林 132012; 2. 吉林大学 化学学院, 长春 130021
  • 收稿日期:2007-07-12 修回日期:1900-01-01 出版日期:2008-07-26 发布日期:2008-07-26
  • 通讯作者: 贾若琨

Preparation of NaYF4∶Er3+,Yb3+ Upconversion Nanocrystals

SUN Mojie1, JIA Ruokun1, ZHANG Xiaojun1, ZHANG Yushuai1, BAI Yubai2, REN Hantao1   

  1. 1. Institute of Chemical Engineering, Northeast Dianli University, Jilin 132012, Jilin Province, China;2.College of Chemistry, Jilin University, Changchun 130021, China
  • Received:2007-07-12 Revised:1900-01-01 Online:2008-07-26 Published:2008-07-26
  • Contact: JIA Ruokun

摘要: 采用溶胶凝胶法合成NaYF4∶Er3+,Yb3+纳米晶. 在980 nm红外激光照射下, 肉眼可观察到明亮的上转换发光; X射线粉末衍射(XRD)结果表明, 该纳米晶属于立方晶体结构; 透射电镜(TEM)照片显示, 晶粒为圆球形, 分散性好, 平均尺寸为70 nm, 符合生物标记过程中对材料的要求. 用荧光光谱仪记录了该上转换光谱, 并对发光机理进行了探讨.

关键词: 上转换材料, 纳米晶, 稀土共掺杂

Abstract: The upconversion nanocrystals NaYF4∶Er3+,Yb3+ were prepared by solgel method. The intense upconversion emission was observed from the nanocrystals under excitation at 980 nm. Xray diffraction analysis suggests that the nanocrystals were cubic. The nanocrystals were found to be welldispersed spherical particles with an average diameter of 70 nm by transmission electron microscopy. The nanocrystals are favorable for the highly sensitive label used in biological detection. The upconversion fluorescence spectrum was recorded on a fluorescence spectrometer. Upconversion mechanism was explored.

Key words: upconversion, nanocrystals, lanthanidedoping

中图分类号: 

  • O614