高等学校化学学报

高等学校化学学报 ›› 1999, Vol. 20 ›› Issue (4): 620.

• 论文 • 上一篇    下一篇

GaAs基底上金纳米粒子的二维组装及其表面增强喇曼散射活性

陈海峰, 王健, 蔡生民, 刘忠范   

  1. 北京大学化学与分子工程学院纳米科学与技术研究中心, 北京 100871
  • 收稿日期:1998-07-03 出版日期:1999-04-24 发布日期:1999-04-24
  • 通讯作者: 刘忠范
  • 作者简介:陈海峰,男,26岁,博士研究生.
  • 基金资助:

    国家“攀登”计划B资助(批准号:940211002)资助课题

Self-assembled Au Nanoparticles on GaAs and Its Surface Enhanced Raman Scattering(SERS)-activity

CHEN Hai-Feng, WANG Jian, CAI Sheng-Min, LIU Zhong-Fan   

  1. Center for Nanoscale Science and Technology, College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871
  • Received:1998-07-03 Online:1999-04-24 Published:1999-04-24

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被引次数

31

摘要： 利用巯基苯胺作耦联分子,成功地将Au纳米粒子组装到GaAs(100)表面上,并且用TM-AFM观察了纳米粒子在表面上的分布情况.Raman研究表明,该基底显示出表面增强喇曼散射活性.

关键词: GaAs, 金纳米粒子, 组装, 表面增强喇曼散射

Abstract: By using p-aminothiophenol(PATP) as the coupling molecular, the Au nanoparticles were successfully self-assembled onto the GaAs(100) surface. Firstly, the mechanically polished semi-insulating GaAs(100) wafers were degreased in trichloroethylene, acetone, methanol, and the surface oxides were chemically polished and removed by rinsing them in V(H2SO4)V(H2O2)V(H2O)=3:1:1, V(NH4OH)V(H2O2)V(H2O)=1:1:7, HCl and de-ionized water. Then the wafers were dried with argon and immediately immersed in1 mmol/Lethanol solution of PATP. After assembling in the solution for 24 h with argon protection, the GaAs(100) wafers with PATP SAMs were ultrasonicated in pure ethanol to remove those physical adsorbed PATP molecules. Assembling of gold nanoparticles(70nm) were handled by immersing thus prepared GaAs(100) wafers with PATP SAMs in a colloidal gold suspension for 6h. The gold nanoparticles were scattered over such a surface. Thus the prepared samples showed a surface enhanced Raman scat tering(SERS)-activity.

Key words: GaAs, Gold nanoparticle, Self-assembled, SER Surface enhanced Raman scattering(SERS)-activity.

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