Ag-CV的表面增强共振散射光谱研究

Surface-enhanced Resonance Scattering Spectroscopic Study of Ag-CV System

中文关键词:  表面增强效应  表面增强共振散射光谱  银胶  结晶紫

英文关键词:surface-enhanced effect  surface-enhanced resonance scattering spectoroscopy  silver sol  crystal violet

中文摘要:

      采用共振散射光谱和紫外可见光谱研究了银胶与结晶紫(CV)的相互作用.在pH为4.0的Hac-NaAc缓冲溶液中,银胶在345nm和700nm有两个共振散射峰;当加入带正电的阳离子染料结晶紫后,产生表面增强效应,345nm和700nm处的共振散射信号大为增强,从而获得灵敏的表面增强共振散射光谱.这一新方法在生物分析化学、生物无机化学和半导体光催化研究领域有着重要的用途.

英文摘要:

      The interaction between silver sol and crystal violet has been studied by means of resonance scattering spectroscopy and UV spectrophotometry. The silver sol exhibits two resonance scattering peaks at 345 nm and 700 nm in the pH 4.0 buffer solution of 0.3 mol/L acetate. The surface-enhanced effect has been observed when the cation dye crystal violet was added to the silver sol. The signal of resonance scattering at 345 nm and 700 nm is enhanced greatly. The sensitive surface-enhanced resonance scattering spectra was obtained. This new technique has important uses in bioanalytical chemistry, bioinorganic chemistry and semiconductor photocatalyst.