Orientation of Pterin-6-Carboxylic Acid on Gold Capped Silicon Nanopillars Platforms: Surface Enhanced Raman Spectroscopy and Density Functional Theory Studies

被引：11

作者：

Castillo, John J. ^{[1
]}

Rozo, Ciro E. ^{[2
]}

Bertel, Linda ^{[3
]}

Rindzevicius, Tomas ^{[4
]}

Mendez-Sanchez, Stelia C. ^{[1
]}

Martinez Ortega, Fernando ^{[3
]}

Boisen, Anja ^{[4
]}

机构：

[1] Univ Ind Santander, Escuela Quim, GIBIM, Grp Invest Bioquim & Microbiol, Bucaramanga, Colombia

[2] Univ Santo Tomas, Fac Quim Ambiental, Grp Invest Ambientales Desarrollo Sostenible, Floridablanca, Colombia

[3] Univ Ind Santander, Ctr Invest Catalisis, UIS Km 2 Via Refugio, Piedecuesta, Colombia

[4] Tech Univ Denmark, Dept Micro & Nanotechnol, DK-2800 Lyngby, Denmark

来源：

JOURNAL OF THE BRAZILIAN CHEMICAL SOCIETY | 2016年 / 27卷 / 05期

关键词：

SERS; gold nanopillar; pterin-6-carboxylic acid; DFT; FOLIC-ACID; SERS; SILVER; NANOPARTICLES; OXIDE;

D O I：

10.5935/0103-5053.20150352

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The orientation of pterin-6-carboxylic acid on gold nanopillars was investigated by surface enhanced Raman spectroscopy and density functional theory methods. The experimentally vibrations from pterin-6-COOH free and attached to the Au surface display vibration features indicating chemical interaction of the pterin with the metal surface. The spectral feature evidenced that the pterin would adsorb on gold surface with a "lying down" configuration through the high intensity vibration of NH scissoring and rocking OH modes. The orientation study of pterins on gold nanopillars presented herein is believed to lead to new applications in biosensing field for detecting pterins of physiological importance.

引用

页码：971 / 977

页数：7

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