Adsorption and Vibrational Study of Folic Acid on Gold Nanopillar Structures Using Surface-enhanced Raman Scattering Spectroscopy
This paper presents a study of adsorption and vibrational features of folic acid, using surface-enhanced Raman scattering (SERS). A gold-capped silicon nanopillar (Au NP) with a height of 600 nm and a width of 120 nm was utilized to study the vibrational features of FA molecules adsorbed on the nano...
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Wiley
2015-10-01
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| Series: | Nanomaterials and Nanotechnology |
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| Online Access: | http://www.intechopen.com/journals/nanomaterials_and_nanotechnology/adsorption-and-vibrational-study-of-folic-acid-on-gold-nanopillar-structures-using-surface-enhanced- |
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| author | John J. Castillo Tomas Rindzevicius Ciro E. Rozo Anja Boisen |
| author_facet | John J. Castillo Tomas Rindzevicius Ciro E. Rozo Anja Boisen |
| author_sort | John J. Castillo |
| collection | DOAJ |
| description | This paper presents a study of adsorption and vibrational features of folic acid, using surface-enhanced Raman scattering (SERS). A gold-capped silicon nanopillar (Au NP) with a height of 600 nm and a width of 120 nm was utilized to study the vibrational features of FA molecules adsorbed on the nanopillars within the high electromag‐ netic field areas. The adsorption behaviour of folic acid and the band assignment of the main vibrations together with the optimized geometry of folic acid and folic acid in the presence of a cluster of 10 gold atoms were assessed using the density functional theory (B3LYP(6-31G(d))) and the scalar relativistic effective core potential with a double-zeta basis set (LANL2DZ). The vibrations obtained from the solid-state folic acid and the folic acid on a gold cluster were in accordance with those observed experimentally. The analysis of the main vibrations indicated that the interac‐ tion of folic acid with the Au NP occurred primarily through the nitrogen atoms, from their pteridine ring. Finally, the obtained adsorption isotherm for folic acid was
deduced from the analysis of the SERS spectra and it followed a negative cooperative binding model. |
| format | Article |
| id | doaj-art-d776ff5e6d3c44598688ee663b6bfc89 |
| institution | OA Journals |
| issn | 1847-9804 |
| language | English |
| publishDate | 2015-10-01 |
| publisher | Wiley |
| record_format | Article |
| series | Nanomaterials and Nanotechnology |
| spelling | doaj-art-d776ff5e6d3c44598688ee663b6bfc892025-08-20T02:20:09ZengWileyNanomaterials and Nanotechnology1847-98042015-10-01529http://dx.doi.org/10.5772/6160649347Adsorption and Vibrational Study of Folic Acid on Gold Nanopillar Structures Using Surface-enhanced Raman Scattering SpectroscopyJohn J. CastilloTomas RindzeviciusCiro E. RozoAnja BoisenThis paper presents a study of adsorption and vibrational features of folic acid, using surface-enhanced Raman scattering (SERS). A gold-capped silicon nanopillar (Au NP) with a height of 600 nm and a width of 120 nm was utilized to study the vibrational features of FA molecules adsorbed on the nanopillars within the high electromag‐ netic field areas. The adsorption behaviour of folic acid and the band assignment of the main vibrations together with the optimized geometry of folic acid and folic acid in the presence of a cluster of 10 gold atoms were assessed using the density functional theory (B3LYP(6-31G(d))) and the scalar relativistic effective core potential with a double-zeta basis set (LANL2DZ). The vibrations obtained from the solid-state folic acid and the folic acid on a gold cluster were in accordance with those observed experimentally. The analysis of the main vibrations indicated that the interac‐ tion of folic acid with the Au NP occurred primarily through the nitrogen atoms, from their pteridine ring. Finally, the obtained adsorption isotherm for folic acid was deduced from the analysis of the SERS spectra and it followed a negative cooperative binding model.http://www.intechopen.com/journals/nanomaterials_and_nanotechnology/adsorption-and-vibrational-study-of-folic-acid-on-gold-nanopillar-structures-using-surface-enhanced-Gold NanopillarsSERSFolic Acid |
| spellingShingle | John J. Castillo Tomas Rindzevicius Ciro E. Rozo Anja Boisen Adsorption and Vibrational Study of Folic Acid on Gold Nanopillar Structures Using Surface-enhanced Raman Scattering Spectroscopy Nanomaterials and Nanotechnology Gold Nanopillars SERS Folic Acid |
| title | Adsorption and Vibrational Study of Folic Acid on Gold Nanopillar Structures Using Surface-enhanced Raman Scattering Spectroscopy |
| title_full | Adsorption and Vibrational Study of Folic Acid on Gold Nanopillar Structures Using Surface-enhanced Raman Scattering Spectroscopy |
| title_fullStr | Adsorption and Vibrational Study of Folic Acid on Gold Nanopillar Structures Using Surface-enhanced Raman Scattering Spectroscopy |
| title_full_unstemmed | Adsorption and Vibrational Study of Folic Acid on Gold Nanopillar Structures Using Surface-enhanced Raman Scattering Spectroscopy |
| title_short | Adsorption and Vibrational Study of Folic Acid on Gold Nanopillar Structures Using Surface-enhanced Raman Scattering Spectroscopy |
| title_sort | adsorption and vibrational study of folic acid on gold nanopillar structures using surface enhanced raman scattering spectroscopy |
| topic | Gold Nanopillars SERS Folic Acid |
| url | http://www.intechopen.com/journals/nanomaterials_and_nanotechnology/adsorption-and-vibrational-study-of-folic-acid-on-gold-nanopillar-structures-using-surface-enhanced- |
| work_keys_str_mv | AT johnjcastillo adsorptionandvibrationalstudyoffolicacidongoldnanopillarstructuresusingsurfaceenhancedramanscatteringspectroscopy AT tomasrindzevicius adsorptionandvibrationalstudyoffolicacidongoldnanopillarstructuresusingsurfaceenhancedramanscatteringspectroscopy AT ciroerozo adsorptionandvibrationalstudyoffolicacidongoldnanopillarstructuresusingsurfaceenhancedramanscatteringspectroscopy AT anjaboisen adsorptionandvibrationalstudyoffolicacidongoldnanopillarstructuresusingsurfaceenhancedramanscatteringspectroscopy |