Chinese Optics Letters, 2008, 6 (7): 526, Published Online: Jul. 11, 2008   

Dependence of surface-enhanced Raman scattering from Calf thymus DNA on anions Download: 820次

Author Affiliations
1 State Key Laboratory of Precision Spectroscopy, Department of Physics, and Department of Chemistry, East China Normal University, Shanghai 200062
2 Department of Physics and Electronics, Henan University, Kaifeng 475003
Abstract
Dependence of surface-enhanced Raman scattering (SERS) from Calf thymus DNA on anions is investigated. With the silver colloid, the bands at 732, 960 and 1333 cm-1 for adenine (A), 1466 cm-1 for deoxyribose, and 1652 cm-1 for the C=O group of thymine (T) are observably enhanced. With the presence of the Cl- or SO^(2-)_(4) anions, the bands at 732 and 1326/1329 cm-1 for the symmetric stretching and skeletal vibrational modes of adenine (A) are dramatically enhanced, and the enhancement effect with the SO^(2-)_(4) ion is more than that with the Cl_ ion. The experimental results show that the DNA molecule can be adsorbed on the silver colloid particles through the C6N and N7 of adenine (A), the C=O of thymine (T) and deoxyribose. Moreover, the formed hydrogen bonding of the Cl_ or SO^(2-)_(4) ions to the C6NH2 group of adenine (A) can induce larger C6N electronegativity, which is favor for the C6N/N7 cooperative adsorption on the (Ag)^(+)_(n) colloid particles.

Jichun Zhu, Yanhui Zhang, Liangping Wu, Zugeng Wang, Zhenrong Sun. Dependence of surface-enhanced Raman scattering from Calf thymus DNA on anions[J]. Chinese Optics Letters, 2008, 6(7): 526.

本文已被 1 篇论文引用
被引统计数据来源于中国光学期刊网
引用该论文: TXT   |   EndNote

相关论文

加载中...

关于本站 Cookie 的使用提示

中国光学期刊网使用基于 cookie 的技术来更好地为您提供各项服务,点击此处了解我们的隐私策略。 如您需继续使用本网站,请您授权我们使用本地 cookie 来保存部分信息。
全站搜索
您最值得信赖的光电行业旗舰网络服务平台!