应用化学 ›› 2012, Vol. 29 ›› Issue (02): 222-227.DOI: 10.3724/SP.J.1095.2011.00130

• 研究论文 • 上一篇    下一篇

傅里叶变换表面等离子体共振频率对金膜表面溶液折射率响应

尉继征1,2,黄宇彬1,景遐斌1*   

  1. (1.中国科学院长春应用化学研究所高分子物理与化学国家重点实验室 长春 130022;
    2.中国科学院研究生院 北京)
  • 收稿日期:2011-03-29 修回日期:2011-05-10 出版日期:2012-02-10 发布日期:2012-02-10
  • 通讯作者: 景遐斌,研究员; Tel/Fax:0431-85262775; E-mail:xbjing@ciac.jl.cn; 研究方向:生物医用高分子
  • 基金资助:
    973计划(2009CB930102);863计划(2007AA03Z535)

Responses of Fourier Transform-Surface Plasmon Resonance Frequency to Refractive Index of the Solution in Contact with the Gold Film

WEI Jizheng1,2, HUANG Yubin1, JING Xiabin1*   

  1. (1.State Key Laboratory of Polymer Physics and Chemistry,Changchun Institute of
    Applied Chemistry,Chinese Academy of Sciences,Changchun 130022;
    2.Graduate School of Chinese Academy of Sciences,Beijing)
  • Received:2011-03-29 Revised:2011-05-10 Published:2012-02-10 Online:2012-02-10

摘要: 采用新型傅里叶变换表面等离子体共振仪(FT-SPR),测定了NaCl、KCl和乙醇3种水溶液在不同浓度下的SPR响应值,建立了SPR响应与溶液浓度和折射率之间的定量关系R=1.53×105(n -1.3333),测定了FT-SPR 100型仪器的折射率响应常数m=1.53×105,即液体折射率每变化0.000 1,FT-SPR响应值变化为15 cm-1。 其结果为用FT-SPR直接测定液体样品的折射率提供了可能。

关键词: 表面等离子体共振, 傅立叶变换红外光谱, FT-SPR, 折射率

Abstract: By using the fourier transform-surface plasmon resonance(FT-SPR) technique, the FT-SPR responses(R) toward NaCl, KCl and ethanol with various aqueous concentrations were measured. A quantitative equation of R=1.53×105(n -1.3333) was set up for the response toward the concentration dependent solution refractive index(n). The result shows that the FT-SPR response of 15 cm-1 is obtained upon 0.0001 change in the refractive index. This equation is promising in direct measurement of refractive index of unknown media.

Key words: surface plasmon resonance (SPR), Fourier transform infrared (FT-IR), FT-SPR, refractive index

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