| 초록 |
Surface-enhanced Raman scattering (SERS) nanoparobes can be useful as a universal quantitative detection tool for various analyte molecules. However, intrinsic differences in affinity of analyte molecules to metal surface hinder SERS as a universal quantitative detection tool. To solve this problem, this must be overcome while keeping close proximity of analyte molecules to the metal surface. In this study, we introduce thin silica-coated and assembled Ag NPs (SiO2@Ag@SiO2 NPs) for detection of chemicals that have different intrinsic affinities to silver metal. These SiO2@Ag@SiO2 NPs could detect each SERS peak of aniline or 4-aminothiophenol from the mixture with limits of detection (LOD) of 93 ppm and 54 ppb, respectively. These nanoparticles were applied to tap water and river water to detect aniline. In addition, these NPs were successfully applied to detect aniline in river water and tap water. |
