Surface-enhanced Raman scattering of λ -DNA

被引：0
|
作者：
H. Wei
H. Xu
机构：
[1] Chinese Academy of Sciences,The State Key Laboratory for Surface Physics, Institute of Physics
来源：
Applied Physics A | 2007年 / 89卷
关键词：
PMMA; Silver Nanoparticles; SERS; SERS Spectrum; Raman Frequency;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
By using the molecular combing method, we stretched DNA molecules with colloidal silver nanoparticles adsorbed on them. Surface-enhanced Raman scattering (SERS) spectra were recorded in this particular DNA/Ag system. We also studied SERS spectra of DNA molecules in solution. The spectra of DNA in different concentration solution show distinct differences, and we speculate that the coiling states of DNA molecules are different in different concentrations, leading to the spectral differences.
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