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

Chem. J. Chinese Universities ›› 2002, Vol. 23 ›› Issue (1): 123.

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

HU Jia-Wen¹, ZHAO Bing¹, XU Wei-Qing¹, XIE Yu-Tao¹, FAN Yu-Guo¹, LI Bo-Fu¹, WANG Hua²

1. Key Laboratory for Supermolecular Structure and Spectroscopy of Ministry of Education, Jilin University, Changchun 130023, China;
2. China-Japan Union Hospital of Jilin University, Changchun 130023, China

Received:2001-07-27 Online:2002-01-24 Published:2002-01-24

Abstract

Abstract: We have found that the silver colloids, which usually used as SERSactive 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 SERSactive substrate.

Key words: SERS, Siliver colloid, Single molecule detection, 2-D Ag film

CLC Number:

O657.37

TrendMD:

HU Jia-Wen, ZHAO Bing, XU Wei-Qing, XIE Yu-Tao, FAN Yu-Guo, LI Bo-Fu, WANG Hua. The Raman Detection of Single Molecule at the Aggregated Silver Particle Films on Air-water Interface[J]. Chem. J. Chinese Universities, 2002, 23(1): 123.

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

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