| 光谱学与光谱分析 |
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| Probing R6G Single Molecules by Surface-Enhanced Resonance Raman Scattering |
| ZHOU Zeng-hui1, 2, LIU Li1, XIAO Fan-rong1, 2, WANG Gui-ying1, XU Zhi-zhan1 |
1. State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, the Chinese Academy of Sciences, Shanghai 201800, China
2. Graduate School of the Chinese Academy of Sciences, Beijing 100039, China |
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Abstract R6G was incubated in three kinds of silver colloid with different low concentrations, and its surface-enhanced resonance Raman scattering (SERRS) was studied with a confocal microscopy system. Each sample exhibited different spectrum character. At the single-molecule level the SERRS-spectra were recorded in 10-13 mol·L-1 dye colloidal solution. Some spectral inhomogeneous behavior was recorded such as spectral diffusion, intensity fluctuation of vibrational lines and spectral polarization, and even on/off blinking and splitting of some lines within the spectrum of one molecule. Polarization of excitation light and background subtraction of signal have an important influence on the SERRS spectra detection of single-molecule, which was analyzed in the present paper.
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Received: 2004-12-28
Accepted: 2005-04-26
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| Cite this article: |
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ZHOU Zeng-hui,LIU Li,XIAO Fan-rong, et al. Probing R6G Single Molecules by Surface-Enhanced Resonance Raman Scattering [J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2005, 25(12): 1986-1990.
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https://www.gpxygpfx.com/EN/Y2005/V25/I12/1986 |
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