纳米粒子与吸附分子之间电荷转移的影响因素研究  

Effecting Factors of Charge Transfer between Nanoparticles in Precious Metals and Surface-Adsorbed Molecules

作　　者：庄严[1] 周全法[1] 

机构地区：[1]江苏技术师范学院江苏省贵金属深加工技术及其应用重点建设实验室,江苏常州213001

出　　处：《稀有金属材料与工程》2008年第4期637-640,共4页Rare Metal Materials and Engineering

基　　金：国家自然科学基金(No.20073028)

摘　　要：以对巯基苯胺为探针分子,研究了金、银纳米粒子与吸附分子之间电荷转移的影响因素。表面增强拉曼光谱中,b2振动有较大增强,说明体系中贵金属纳米粒子与吸附分子对巯基苯胺之间的电荷转移增多。研究表明,基底、共吸附卤素离子(Cl-,Br-,I-)以及吸附分子的吸附方式都影响纳米粒子与吸附分子之间的电荷转移行为。The effecting factors of charge transfer between nanoparticles in precious metals and surface-adsorbed molecules have been studied using Raman spectra in which the p-aminothiophenol was used as the probe molecule. Some b2 vibrations in surface enhanced Raman spectra were found to be enhanced greatly. It suggested that charge transfer between nanoparticles and the p-aminothiophenol molecules should be increased. The results show that charge transfer process is influenced by property and architecture of SERS substrate, co-adsorbed halide ions like CI^-, Br^-, I^- and adsorption mode of adsorbed molecule.

关 键 词：对巯基苯胺 表面增强拉曼光谱 电荷转移 贵金属纳米粒子 

分 类 号：TB383.1[一般工业技术—材料科学与工程]