金纳米粒子组装体系SERS化学增强的研究  

Study of Chemical Enhancement in SERS from An Nanoparticles Assembly

作　　者：王健[1] 朱涛[1] 符小艺[1] 刘忠范[1] 

机构地区：[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

出　　处：《物理化学学报》1998年第6期485-489,共5页Acta Physico-Chimica Sinica

基　　金：国家"攀登"计划

摘　　要：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.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.

关 键 词：纳米粒子 组装 SERS 化学增强 金钠米粒子 

分 类 号：O614.123[理学—无机化学]