水汽界面二维银颗粒表面上的单分子拉曼光谱检测  

The Raman Detection of Single Molecule at the Aggregated Silver Particle Films on Air-water Interface

作　　者：胡家文[1] 赵冰[1] 徐蔚青[1] 谢玉涛[1] 樊玉国[1] 李伯符[1] 王华[2] 

机构地区：[1]吉林大学超分子结构与谱学教育部重点实验室,长春130023 [2]吉林大学中日联谊医院,长春130023

出　　处：《高等学校化学学报》2002年第1期123-125,共3页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金 (批准号 :2 9975 0 11;2 96 330 10 );国家重点基础研究发展规划项目 (批准号 :G2 0 0 0 0 7810 2 )资助

摘　　要：We have found that the silver colloids, which usually used as SERS active substrate, are inclined to aggregation on air water interface and forming a two dimension silver particle films. The formed silver particle films exhibit much higher surface Raman enhancement factor than silver colloids, and the power used on silver particle films is only about 1% of that on silver colloids. Combining with resonance Raman enhancement technique, we realize single molecular Raman detection under the common conditions by using this silver particle films as SERS active substrate.We have found that the silver colloids, which usually used as SERS active substrate, are inclined to aggregation on air water interface and forming a two dimension silver particle films. The formed silver particle films exhibit much higher surface Raman enhancement factor than silver colloids, and the power used on silver particle films is only about 1% of that on silver colloids. Combining with resonance Raman enhancement technique, we realize single molecular Raman detection under the common conditions by using this silver particle films as SERS active substrate.

关 键 词：表面增强拉曼光谱 银溶胶 单分子检测 二维银膜 水汽界面 单分子光谱 

分 类 号：O657.37[理学—分析化学]