物理化学学报 >> 1991, Vol. 7 >> Issue (03): 300-304.doi: 10.3866/PKU.WHXB19910308

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荧光素钠互变异构体的表面增强共振喇曼散射光谱

陈亭; 梁舫; 郑丽羽; 陈文驹; 莫育俊   

  1. 南开大学物理系，天津 300071；中国科学院物理研究所
  • 收稿日期:1990-02-16 修回日期:1990-09-17 发布日期:1991-06-15
  • 通讯作者:

Surface-Enhanced Resonance Raman Scattering Spectra of Sodium Fluorescein with Different Tautomers

Chen Ting;L iang Fang; Zheng Li-Yu; Chen Wen-Ju; Mo Yu-Jun   

  1. Physics Department, Nankai University, Tianjin 30071; Institute of Physics, Academia Sincia, Beijing
  • Received:1990-02-16 Revised:1990-09-17 Published:1991-06-15
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摘要： 本文报导了不同pH值下荧光素钠吸附于银岛膜的表面增强共振喇曼散射(SERRS)光谱。由于在不同pH值的溶液中荧光素钠具有不同的离子构型, 其SERRS光谱也有所不同, 其差异主要表现在谱线强度的变化而不是频率变化。谱线强度随pH值的变化形式可分为两种类型, 这与其相对应的振动模的性质有关。利用“四级能模型”和共振喇曼理论对实验结果进行了分析。

关键词: 荧光素钠, 表面增强共振喇曼光谱

Abstract: The SERRS spectra of sodium fluorescein at various pH values adsorbed on silverisland film are presented. Due to the fact that sodium fluorescein exists in different ionic forms in the solutions at different pH values, these SERRS spectra are different. The difference lies not in the freciuency, but in the intensity of Raman bands. The intensity variation of the band with the pH value falls into two categeries depending on the nature of corresponding modes of vibration. The experimental results are interpred by using a "four-level model" with the theory of resonance Raman scttering.

Key words: Sodium fluorescein, SERRS