高等学校化学学报

高等学校化学学报

• 研究论文 • 上一篇    下一篇

单个Fe2O3@Au粒子的偏振表面增强拉曼光谱

沈红霞1,2, 姚建林1, 邹文君1, 顾仁敖1   

    1. 苏州大学化学系, 苏州 215123;
    2. 嘉兴学院生物与化学工程学院, 嘉兴 314001
  • 收稿日期:2008-10-06 修回日期:1900-01-01 出版日期:2009-03-10 发布日期:2009-03-10
  • 通讯作者: 姚建林, 顾仁敖

Polarization Dependence of Surface-enhanced Raman Spectroscopy on Single Fe2O3@Au Particle

SHEN Hong-Xia1,2, YAO Jian-Lin1*, ZOU Wen-Jun1, GU Ren-Ao1*   

    1. Department of Chemistry, Suzhou University, Suzhou 215123, China;
    2. Department of Biology and Chemical Engineering, Jiaxing College, Jiaxing 314001, China
  • Received:2008-10-06 Revised:1900-01-01 Online:2009-03-10 Published:2009-03-10
  • Contact: YAO Jian-Lin, GU Ren-Ao

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摘要： 本文首次报道了单个纺锤形Fe2O3@Au颗粒的偏振相关的SERS光谱, 为研究SERS机理提供了实验依据.

关键词: 偏振相关, 表面增强拉曼光谱, Fe2O3@Au粒子

Abstract: The core-shell Fe2O3@Au particle with spindle morphology were synthesized by three steps. The mean size of the core-shell paricles was about 500 nm by 85 nm. The final single separated spindle particles were attached onto Si substrates. The thiophenol(TP) was served as probe molecule to investigate the pola-rized dependent surface-enhanced Raman scattering(SERS) from single particle. Dramatic variations in SERS intensity was observed when the single core-shell particle was oriented at different angles relative to the polarization of excitation laser. The maximum SERS intensity was detected for TP absorbed on the anisotropic particle which was in the polarization direction parallel to the long axis of the particle, while the minimum intensity was detected at the direction of the incident field that is perpendicular to the long axis of the particle. Our preliminary results provided useful way for obtaining deeper insight to the SERS mechanism.

Key words: Polarization dependence, Surface enhanced Raman spectroscopy, Fe2O3@Au particle

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