物理化学学报 >> 1998, Vol. 14 >> Issue (06): 485-489.doi: 10.3866/PKU.WHXB19980602

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金纳米粒子组装体系SERS化学增强的研究

王健, 朱涛, 符小艺, 刘忠范   

  1. 北京大学化学与分子工程学院，智能材料研究中心，北京 100871
  • 收稿日期:1998-03-07 修回日期:1998-04-14 发布日期:1998-06-15
  • 通讯作者: 刘忠范

Study of Chemical Enhancement in SERS from Au Nanoparticles Assembly

Wang Jian, Zhu Tao, Fu Xiao-Yi, Liu Zhong-Fan   

  1. Center for Intelligent Materials Research(CIMR),College of Chemistry Molecular Engineering,Peking University,Beijing 100871
  • Received:1998-03-07 Revised:1998-04-14 Published:1998-06-15
  • Contact: Liu Zhong-Fan

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关键词: Au纳米粒子, 组装, SERS, 化学增强, 电荷转移

Abstract:

Gold nanoparticles were assembled on gold substrates with the self-assembled monolayer(SAM) of p-minothiophenol(PATP). AFM measurements disclose that gold nanoparticles are scattered over the surface of the substrate with a submonolayer coverage. The Raman signal of the coupling layer, the SAM of PATP, can be well observed. Potential-dependent measurements were performed to study the chemical enhancement in SERS of such a system. Based on the supposition that the direction of charge transfer is from gold nanoparticles to PATP, it is deduced that Herzberg-Teller contribution has ruled in the SERS of such a system.

Key words: Au nanoparticles, Assembly, SERS, Chemical enhancement, Charge transfer