高等学校化学学报 ›› 1993, Vol. 14 ›› Issue (1): 102.

• 研究论文 • 上一篇    下一篇

银溶胶体系表面增强拉曼散射光谱的溶剂效应

何张飞, 顾仁敖   

  1. 苏州大学化学系, 苏州 215006
  • 收稿日期:1992-04-30 修回日期:1992-07-19 出版日期:1993-01-24 发布日期:1993-01-24
  • 通讯作者: 顾仁敖
  • 基金资助:

    国家自然科学基金

The Effect of Solvent on Surface Enhanced Raman Scattering Spectra of Colloidal Silver

HE Zhang-Fei, GU Ren-Ao   

  1. Department of Chemistry, Suzhou Umtvrsity, Suzhou, 215006
  • Received:1992-04-30 Revised:1992-07-19 Online:1993-01-24 Published:1993-01-24

摘要: 研究了银溶胶体系表面增强拉曼散射光谱的溶剂效应,发现在不同的溶剂中,银溶胶的聚集状态不同,当胶粒带电荷时,溶剂还能影响分子在胶粒表面的吸附,溶剂通过改变胶粒的聚集状态及分子在胶粒上的吸附这两个因素影响银溶胶体系的SERS光谱。

关键词: 银溶胶, 表面增强拉曼散射, 溶剂效应, 2-氨基苯并咪唑

Abstract: This paper reports the effect of solvent on the surface enhanced Raman scattering (SERS) spectra of colloidal silver, using2-aminobenzimidazole(BIMNH2) as a probe molecule.The absorption spectra indicate that the state of aggregation of colloidal silver is not alike in different solvents, the degree of dispersion of colloidal silver in different solvents always increases in the.order of C2H5OH, C2H5OC2H5, CH3OH, H2O, colloidal silver is more dispersed in CHCl3 than in CH2Cl2, CCl4, the latter two systems are almost the same.Different states of aggregation will give the different intensities of SERS.Experiment also indicates that the degree of dispersion of colloidal silver is always larger in mixed solvent than in single solvent.

Key words: Colloidal silver, Surface enhanced Raman scattering, Effect of solvent, 2-Aminobenzimidazole

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