高等学校化学学报2012，Vol.33Issue(6)：1306-1311,6.DOI:10.3969/j.issn.0251-0790.2012.06.031
Ag/Si-NPA基底上共吸附R6G和CV的表面增强拉曼散射
Surface-enhanced Raman Scattering of Rhodamine 6G and Crystal Violet Co-adsorbed on Ag/Si-NPA
摘要
Abstract
Based on silicon nanoporous pillar array ( Si-NPA) , an active substrate ( Ag/Si-NPA) with strong surface-enhanced Raman scattering(SERS) effect was prepared by an immersion plating method. The surface morphology and structure of Ag/Si-NPA were characterized by field-emission scanning electron microscopy (FESEM) and transmission electron microscopy(TEM). Choosing two important biological dyes, Rhodamine 6G(R6G) and crystal violet(CV) , as the target materials and adopting three different adsorbing procedures, the SERS spectra for R6G and CV co-adsorbed on Ag/Si-NPA were detected. It was found that the Raman peaks for CV were completely glossed over by that of R6G when the concentration of both solutions was 10-7 mol/L, no matter what adsorbing procedure was adopted. The phenomenon was explained based on the experimental conditions and results. When the solution concentrations for R6G and CV were chosen as 10-9 and 10-7 mol/L, two groups of characteristic SERS peaks with good separation, well-matched relative intensity and high resolution, corresponding to R6G and CV, respectively, were obtained. Such a SERS spectrum was very helpful for predigesting the indexing and estimating procedure about the characteristic peaks. Our results might provid an investigable route for realizing the SERS detection of multi-dye labeled complex bio-molecule systems.关键词
罗丹明6G/结晶紫/硅纳米孔柱阵列/Ag/Si-NPA/表面增强拉曼散射/共吸附Key words
Rhodamine 6G ( R6G )/Crystal violet ( CV )/Silicon nanoporous pillar array ( Si-NPA )/Ag/Si-NPA/Surface-enhanced Raman scattering (SERS)/Co-adsorption分类
化学化工引用本文复制引用
王永强,王海燕,马省,李新建..Ag/Si-NPA基底上共吸附R6G和CV的表面增强拉曼散射[J].高等学校化学学报,2012,33(6):1306-1311,6.基金项目
国家自然科学基金(批准号:11074224)和河南省重大科技攻关项目(批准号:082101510007)资助. （批准号:11074224）
