引用本文:
【打印本页】   【HTML】   【下载PDF全文】   View/Add Comment  【EndNote】   【RefMan】   【BibTex】
←前一篇|后一篇→ 过刊浏览    高级检索
本文已被:浏览 1708次   下载 2246 本文二维码信息
码上扫一扫!
分享到: 微信 更多
Adsorption Behaviors of 4-Mercaptobenzoic Acid on Silver and Gold Films
马文强*,方炎,郝刚领,王伟国
Author NameAffiliationE-mail
马文强* College of Physical and Electronic Information, Yan'an University, Yan'an 761000, China; Beijing Key Lab for Nano-photonics and Nano-structure, Department of Physics, Capital Normal University, Beijing 100037, China npns mwq@126.com 
方炎 Beijing Key Lab for Nano-photonics and Nano-structure, Department of Physics, Capital Normal University, Beijing 100037, China  
郝刚领 College of Physical and Electronic Information, Yan'an University, Yan'an 761000, China  
王伟国 College of Physical and Electronic Information, Yan'an University, Yan'an 761000, China  
Abstract:
The adsorption behaviors of 4-mercaptobenzoic acid on silver and gold nanoparticles were studied by surface-enhanced Raman scattering (SERS) and density functional theory. The silver and gold films by electrodeposition have the same excellent characteristics as SERS- active substrates. At the same, the SERS spectra indicate that 4-mercaptobenzoic acid molecules are adsorbed on the surfaces of gold nanoparticles through the S atom, and that the carboxyl group is far away from surface of gold nanoparticles, and that there is a certain angle between the plane of benzene ring and gold film. However, 4-mercaptobenzoic acid molecules are adsorbed on the surfaces of silver nanoparticles through the carboxyl group, and the S atom is far away from surface of silver nanoparticles, and there is also a certain angle between the plane of benzene ring and the surface of silver nanoparticles. Here it is demonstrated the calculated Raman frequencies are in good agreement with experimental values, and the calculated Raman frequencies are also helpful to infer the adsorption behaviors of 4-mercaptobenzoic acid molecules.
Key words:  Adsorption behavior, Surface-enhanced Raman scattering, Density functional theory
FundProject:
巯基苯甲酸在电化学沉积的金/银薄膜表面的吸附行为
Wen-qiang Ma*,Yan Fang,Gang-ling Hao,Wei-guo Wang
摘要:
通过表面增强拉曼散射(SERS)技术和密度泛函理论(DFT)研究对巯基苯甲酸自组装在电化学沉积的金和银薄膜表面的吸附行为.结果表明电化学沉积的金和银薄膜是良好的SERS活性基底. 通过对巯基苯甲酸的SERS光谱分析和DFT理论计算,以及表面选择定则,得到了对巯基苯甲酸主要通过羧基自组装在电化学沉积银膜表面,并且苯环表面可能和银表面有一倾角,对巯基苯甲酸主要通过硫原子和金表面相互作用,并且苯环平面可能和金膜表面有一个倾角
关键词:  表面增强拉曼散射,密度泛函理论,吸附行为
DOI:10.1088/1674-0068/23/06/659-663
分类号: