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。
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\%(H\-2SO\-4)\}\%V\%(H\-2O\-2)\%V\%(H\-2O)=311, \%V\%(NH\-4OH)\%V\%(H\-2O\-2)\%V\%(H\-2O)=117, HCl and de\|ionized water. Then the wafers were dried with argon and immediately immersed in 1 mmol/L ethanol 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(70 nm) were handled by immersing thus prepared GaAs(100) wafers with PATP SAMs in a colloidal gold suspension for 6 h. The gold nanoparticles were scattered over such a surface. Thus the prepared samples showed a s
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
1999年第4期620-623,共4页
Chemical Journal of Chinese Universities
基金
国家"攀登"计划B资助
关键词
金纳米粒子
砷化镓
组装
纳米粒子
SERS
GaAs, Gold nanoparticle, Self\|assembled, SERSurface enhanced Raman scattering(SERS)\|activity.
