氯离子对结晶紫-银胶-HOPG体系近红外表面增强拉曼散射增强作用的研究  

Enhancement Effect of the Chloride Ion on the Near-Infrared Surface-Enhanced Raman Scattering of Crystal Violet-Ag Colloid-HOPG Systems

作　　者：谭恩忠[1] 方炎[2] 

机构地区：[1]北京石油化工学院数理系 [2]首都师范大学北京市纳米光电子学重点实验室,北京市100037

出　　处：《光谱实验室》2007年第6期1063-1066,共4页Chinese Journal of Spectroscopy Laboratory

基　　金：校青年基金支持;基金号N60-30

摘　　要：利用银胶纳米颗粒与高取向性热解石墨(HOPG)制备表面增强基底,采用近红外激光(1064nm)激发,研究了氯离子对结晶紫(CV)分子近红外表面增强拉曼散射(Near-Infrared Surface-Enhanced Raman Scattering,NIR-SERS)的影响。结果表明,氯离子对"化学增强"和"物理增强"都有作用。同时利用扫描电镜(SEM)图像间接证明了这一结论。The sample base was prepared by directly depositing a drop of silver colloidal solution on the basal plan of a freshly cleared highly oriented pyrolytic graphite（HOPG）.The enhancement effect of the chloride ion on crystal violet was studied by surface-enhanced Raman scattering（SERS）with near-infrared（NIR）excitation.The result showed that the chloride ion gave both physical enhancement and chemical enhancement,which was also proved indirectly by the corresponding scanning electron microscope（SEM）image of the system above.

关 键 词：结晶紫 氯离子 近红外表面增强拉曼散射 

分 类 号：O657.37[理学—分析化学]