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

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 interacti...

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Bibliographic Details
Published inJournal of the Brazilian Chemical Society Vol. 27; no. 5; pp. 971 - 977
Main Authors Castillo, John J., Rozo, Ciro E., Bertel, Linda, Rindzevicius, Tomas, Mendez‑Sanchez, Stelia C., Ortega, Fernando Martínez, Boisen, Anja
Format Journal Article
LanguageEnglish
Published Sociedade Brasileira de Química 01.05.2016
Subjects
CHEMISTRY, MULTIDISCIPLINARY
gold nanopillar
DFT
SERS
pterin-6-carboxylic acid
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Summary: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.
ISSN:0103-5053
1678-4790
DOI:10.5935/0103-5053.20150352