SERS studies of the adsorption of guanine derivatives on gold colloidal nanoparticles

被引：47

作者：

Pergolese, B ^{[1
]}

Bonifacio, A ^{[1
]}

Bigotto, A ^{[1
]}

机构：

[1] Univ Trieste, Dept Chem Sci, I-34127 Trieste, Italy

来源：

PHYSICAL CHEMISTRY CHEMICAL PHYSICS | 2005年 / 7卷 / 20期

关键词：

D O I：

10.1039/b508850j

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Surface enhanced Raman scattering spectra of guanine, guanosine and 2'-deoxyguanosine adsorbed on gold colloidal nanoparticles were obtained. From the striking similarity of the SERS spectra of these compounds, it can be evidenced that guanosine and 2'-deoxyguanosine adsorb on gold nanoparticles through the guanine moiety. The molecular sites involved in the interaction with the gold surface are the same for the 3 compounds: the oxygen of the carbonilic group and the N-7 atom. Guanine, guanosine and 2'-deoxyguanosine adsorb on the gold substrates with a tilted orientation with respect to the metal surface. SERS data were interpreted taking into account density functional theoretical (DFT) calculations of guanine.

引用

页码：3610 / 3613

页数：4

共 23 条

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