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.
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
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
