高等学校化学学报 ›› 2005, Vol. 26 ›› Issue (10): 1869-1872.

• 研究论文 • 上一篇    下一篇

纳米金汞核-壳粒子的电化学制备及其光谱性质

李晓伟1, 周群2, 庄严2, 郑军伟2, 陆天虹1   

  1. 1. 辽宁大学化学学院稀散元素化学研究所,沈阳110036;
    2. 中国科学院青海盐湖研究所,西宁810008;
    3. 中国科学院研究生院,北京100039
  • 收稿日期:2004-11-18 出版日期:2005-10-10 发布日期:2005-10-10
  • 基金资助:

    国家自然科学基金(批准号:20073028,20473056)资助

Electrochemical Preparation and Spectral Properties of Au-Hg Core-shell Nanoparticles

LI Xiao-Wei1, ZHOU Qun2, ZHUANG Yan2, ZHENG Jun-Wei2, LU Tian-Hong1   

  1. 1. Changchun Institute of Applied Chemistry,Chinese Academy of Sciences,Changchun 130022,China;
    2. Department of Chemistry,Suzhou University,Suzhou 215006,China
  • Received:2004-11-18 Online:2005-10-10 Published:2005-10-10

摘要: 在聚乙烯吡啶修饰导电玻璃电极表面进行了金纳米粒子的二维单层结构组装,通过电沉积方法在金粒子表面制备了纳米汞壳层.研究结果表明,汞壳层的形成导致了内部金粒子表面等离子体共振的谱峰红移和强度衰减.吸附于汞壳表面的结晶紫分子因可承受被金核增强的电磁场,而使其拉曼散射得到极大的增强.

关键词: 金纳米粒子, 汞壳, 电化学, 表面增强拉曼光谱, 吸收光谱

Abstract: Gold nanoparticles were assembled on the polyvinylpyridine modified ITO electrode to form a particle monolayer.Mercury nanoshell on the surface of the gold nanoparticles was obtained by electrochemical deposition.The formation of the mercury nanoshell resulted in a red shift and damping of the surface plasmon resonance of the inner gold nanoparticles.Molecules adsorbed on the mercury nanoshell can still experience the enhanced electric field from the gold core,as a result,the Raman scattering of the adsorbed molecules can be greatly enhanced.

Key words: Gold nanoparticles, Mercury nanoshell, Electrochemistry, Surface-enhanced Raman spectroscopy, Absorption spectroscopy

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