Surface enhanced Raman scattering of amino acids assisted by gold nanoparticles and Gd(3+) ions
The surface enhanced raman scattering (SERS) signal from the l-tyrosine (tyr) molecule adsorbed on gold nanoparticles (Au-tyr) is compared with the SERS signal assisted by the presence of gadolinium ions (Gd(3+)) coordinated with the Au-tyr system. An enhancement factor of the SERS signal in the pre...
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| Veröffentlicht in: | The journal of physical chemistry. A, Molecules, spectroscopy, kinetics, environment, & general theory Molecules, spectroscopy, kinetics, environment, & general theory, 2015-05, Vol.119 (18), p.4127-4135 |
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| container_end_page | 4135 |
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| container_issue | 18 |
| container_start_page | 4127 |
| container_title | The journal of physical chemistry. A, Molecules, spectroscopy, kinetics, environment, & general theory |
| container_volume | 119 |
| creator | López-Neira, Juan Pablo Galicia-Hernández, José Mario Reyes-Coronado, Alejandro Pérez, Elías Castillo-Rivera, Francisco |
| description | The surface enhanced raman scattering (SERS) signal from the l-tyrosine (tyr) molecule adsorbed on gold nanoparticles (Au-tyr) is compared with the SERS signal assisted by the presence of gadolinium ions (Gd(3+)) coordinated with the Au-tyr system. An enhancement factor of the SERS signal in the presence of Gd(3+) ions was ∼5 times higher than that produced by l-tyrosine adsorbed on gold nanoparticles. The enhancement of the SERS signal can be attributed to a corresponding increase in the local electric field due to the presence of Gd(3+) ions in the vicinity of a gold dimer configuration. This scenario was confirmed by solving numerically Maxwell equations, showing an increase of 1 order of magnitude in the local electric scattered field when the Gd(3+) ion is located in between a gold dimer compared with naked gold nanoparticles. |
| doi_str_mv | 10.1021/jp511548a |
| format | Article |
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An enhancement factor of the SERS signal in the presence of Gd(3+) ions was ∼5 times higher than that produced by l-tyrosine adsorbed on gold nanoparticles. The enhancement of the SERS signal can be attributed to a corresponding increase in the local electric field due to the presence of Gd(3+) ions in the vicinity of a gold dimer configuration. This scenario was confirmed by solving numerically Maxwell equations, showing an increase of 1 order of magnitude in the local electric scattered field when the Gd(3+) ion is located in between a gold dimer compared with naked gold nanoparticles.</description><identifier>EISSN: 1520-5215</identifier><identifier>DOI: 10.1021/jp511548a</identifier><identifier>PMID: 25860315</identifier><language>eng</language><publisher>United States</publisher><subject>Gadolinium - chemistry ; Gold - chemistry ; Ions - chemistry ; Metal Nanoparticles - chemistry ; Spectrum Analysis, Raman ; Surface Properties ; Tyrosine - chemistry</subject><ispartof>The journal of physical chemistry. 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A, Molecules, spectroscopy, kinetics, environment, & general theory</title><addtitle>J Phys Chem A</addtitle><description>The surface enhanced raman scattering (SERS) signal from the l-tyrosine (tyr) molecule adsorbed on gold nanoparticles (Au-tyr) is compared with the SERS signal assisted by the presence of gadolinium ions (Gd(3+)) coordinated with the Au-tyr system. An enhancement factor of the SERS signal in the presence of Gd(3+) ions was ∼5 times higher than that produced by l-tyrosine adsorbed on gold nanoparticles. The enhancement of the SERS signal can be attributed to a corresponding increase in the local electric field due to the presence of Gd(3+) ions in the vicinity of a gold dimer configuration. This scenario was confirmed by solving numerically Maxwell equations, showing an increase of 1 order of magnitude in the local electric scattered field when the Gd(3+) ion is located in between a gold dimer compared with naked gold nanoparticles.</description><subject>Gadolinium - chemistry</subject><subject>Gold - chemistry</subject><subject>Ions - chemistry</subject><subject>Metal Nanoparticles - chemistry</subject><subject>Spectrum Analysis, Raman</subject><subject>Surface Properties</subject><subject>Tyrosine - chemistry</subject><issn>1520-5215</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2015</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNo10EtLw0AUBeBBEFurC_-AzLIi0bkzySRZSqlVKAg-1uHOq05JZmImWfTfW7CuzuJ8nMUh5AbYAzAOj_u-ACjyCs_IHArOsoJDMSOXKe0ZYyB4fkFmvKgkE1DMSfMxDQ61pTZ8Y9DW0HfsMNCkcRzt4MOORkex8yFS1N4kiin5NB6hOtBdbA0NGGKPw-h1a491MHRjluL-jvoY0hU5d9gme33KBfl6Xn-uXrLt2-Z19bTNeuByzOpSal5WNVcCrbG5ULmRspTGqpxzaZQCJnmtGUOHxlgB2kHOnWNC1IIzsSDLv91-iD-TTWPT-aRt22KwcUoNyIpBnUsoj_T2RCfVWdP0g-9wODT_p4hf3X9gUg</recordid><startdate>20150507</startdate><enddate>20150507</enddate><creator>López-Neira, Juan Pablo</creator><creator>Galicia-Hernández, José Mario</creator><creator>Reyes-Coronado, Alejandro</creator><creator>Pérez, Elías</creator><creator>Castillo-Rivera, Francisco</creator><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>7X8</scope></search><sort><creationdate>20150507</creationdate><title>Surface enhanced Raman scattering of amino acids assisted by gold nanoparticles and Gd(3+) ions</title><author>López-Neira, Juan Pablo ; Galicia-Hernández, José Mario ; Reyes-Coronado, Alejandro ; Pérez, Elías ; Castillo-Rivera, Francisco</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-p126t-976c27892b3aede43b4d6676deb4226dbb10629c00afadde31cf142ff03393203</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2015</creationdate><topic>Gadolinium - chemistry</topic><topic>Gold - chemistry</topic><topic>Ions - chemistry</topic><topic>Metal Nanoparticles - chemistry</topic><topic>Spectrum Analysis, Raman</topic><topic>Surface Properties</topic><topic>Tyrosine - chemistry</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>López-Neira, Juan Pablo</creatorcontrib><creatorcontrib>Galicia-Hernández, José Mario</creatorcontrib><creatorcontrib>Reyes-Coronado, Alejandro</creatorcontrib><creatorcontrib>Pérez, Elías</creatorcontrib><creatorcontrib>Castillo-Rivera, Francisco</creatorcontrib><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>MEDLINE - Academic</collection><jtitle>The journal of physical chemistry. 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A, Molecules, spectroscopy, kinetics, environment, & general theory</jtitle><addtitle>J Phys Chem A</addtitle><date>2015-05-07</date><risdate>2015</risdate><volume>119</volume><issue>18</issue><spage>4127</spage><epage>4135</epage><pages>4127-4135</pages><eissn>1520-5215</eissn><abstract>The surface enhanced raman scattering (SERS) signal from the l-tyrosine (tyr) molecule adsorbed on gold nanoparticles (Au-tyr) is compared with the SERS signal assisted by the presence of gadolinium ions (Gd(3+)) coordinated with the Au-tyr system. An enhancement factor of the SERS signal in the presence of Gd(3+) ions was ∼5 times higher than that produced by l-tyrosine adsorbed on gold nanoparticles. The enhancement of the SERS signal can be attributed to a corresponding increase in the local electric field due to the presence of Gd(3+) ions in the vicinity of a gold dimer configuration. 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| identifier | EISSN: 1520-5215 |
| ispartof | The journal of physical chemistry. A, Molecules, spectroscopy, kinetics, environment, & general theory, 2015-05, Vol.119 (18), p.4127-4135 |
| issn | 1520-5215 |
| language | eng |
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| source | MEDLINE; American Chemical Society Journals |
| subjects | Gadolinium - chemistry Gold - chemistry Ions - chemistry Metal Nanoparticles - chemistry Spectrum Analysis, Raman Surface Properties Tyrosine - chemistry |
| title | Surface enhanced Raman scattering of amino acids assisted by gold nanoparticles and Gd(3+) ions |
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