高等学校化学学报 ›› 2003, Vol. 24 ›› Issue (7): 1201.

• 研究简报 • 上一篇    下一篇

金纳米粒子-荧光素体系的光谱特性

蒋治良1,2, 刘绍璞1, 王力生2, 覃爱苗2, 梁宏2   

  1. 1. 西南师范大学环境化学研究所, 重庆 400715;
    2. 广西师范大学资源与环境学系, 桂林 541004
  • 收稿日期:2002-03-06 出版日期:2003-07-24 发布日期:2003-07-24
  • 通讯作者: 刘绍璞(1940年出生),男,教授,博士生导师,从事分子光谱分析研究.
  • 基金资助:

    国家自然科学基金(批准号:20175018);广西省自然科学基金(批准号:2014016);广西省教育厅科研基金资助

Spectroscopic Characteristic of the Gold Nanoparticle-fluorescein System

JIANG Zhi-Liang1,2, LIU Shao-Pu1, WANG Li-Sheng2, QIN Ai-Miao2, LIANG Hong2   

  1. 1. Institute of Environmental Chemistry, Southwest-China Normal University, Chongqing 400715, China;
    2. Department of Resource and Environmental Science, Guangxi Normal University, Guilin 541004, China
  • Received:2002-03-06 Online:2003-07-24 Published:2003-07-24

关键词: 金纳米粒子, 荧光素, 共振散射, 荧光猝灭机理

Abstract:

There are an absorption peak at 485 nm and a synchronous fluorescence peak at 510 nm for fluorescein in the medium of 3.4×10-3 mol/L tri-sodium citrate. The gold nanoparticle system exhibits a characterization resonance scattering peak at 580 nm. In the coexisting system of gold nanoparticle and fluorescein, there are a synchronous fluorescence peak at 510 nm and a resonance scattering peak at 580 nm. It has been found that the fluorescence peak may be quenched by gold nanoparticle. When the concentration of fluorescein is higher, the A470nm nm affects the I470nm of gold nanoparticle. The I470nm decreases exponentially with the concentration of fluorescein.

Key words: Gold nanoparticle, Fluorescein, Resonance scattering, Fluorescence quenching mechanism

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