Vibrational study of the metal–adsorbate interaction of phenylacetic acid and α-phenylglycine on silver surfaces
Raman and SERS spectra of phenylacetic acid and α-phenylglycine on silver sols have been recorded at several concentrations and pH values. The α-phenylglycine has been also studied in D 2O. The respective vibrational assignments have been proposed and the analysis of the SERS spectra has made it pos...
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| Veröffentlicht in: | Journal of colloid and interface science 2003-07, Vol.263 (2), p.357-363 |
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| creator | Castro, J.L López Ramı́rez, M.R López Tocón, I Otero, J.C |
| description | Raman and SERS spectra of phenylacetic acid and
α-phenylglycine on silver sols have been recorded at several concentrations and pH values. The
α-phenylglycine has been also studied in D
2O. The respective vibrational assignments have been proposed and the analysis of the SERS spectra has made it possible to conclude that phenylacetic acid links to the metal through its carboxylate group only, while
α-phenylglycine links also through its amino group. In both cases the aromatic ring seems to be almost perpendicular to the metal surface. On the other hand, the contribution of the charge transfer (CT) mechanism to the enhancement of the SERS spectra has been calculated as well and it is found to be very important in both molecules. The band most enhanced by this mechanism is that of vibration 8a, mainly in
α-phenylglycine. |
| doi_str_mv | 10.1016/S0021-9797(03)00257-1 |
| format | Article |
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α-phenylglycine on silver sols have been recorded at several concentrations and pH values. The
α-phenylglycine has been also studied in D
2O. The respective vibrational assignments have been proposed and the analysis of the SERS spectra has made it possible to conclude that phenylacetic acid links to the metal through its carboxylate group only, while
α-phenylglycine links also through its amino group. In both cases the aromatic ring seems to be almost perpendicular to the metal surface. On the other hand, the contribution of the charge transfer (CT) mechanism to the enhancement of the SERS spectra has been calculated as well and it is found to be very important in both molecules. The band most enhanced by this mechanism is that of vibration 8a, mainly in
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α-phenylglycine on silver sols have been recorded at several concentrations and pH values. The
α-phenylglycine has been also studied in D
2O. The respective vibrational assignments have been proposed and the analysis of the SERS spectra has made it possible to conclude that phenylacetic acid links to the metal through its carboxylate group only, while
α-phenylglycine links also through its amino group. In both cases the aromatic ring seems to be almost perpendicular to the metal surface. On the other hand, the contribution of the charge transfer (CT) mechanism to the enhancement of the SERS spectra has been calculated as well and it is found to be very important in both molecules. The band most enhanced by this mechanism is that of vibration 8a, mainly in
α-phenylglycine.</description><subject>Adsorption</subject><subject>Biophysical Phenomena</subject><subject>Biophysics</subject><subject>Carbon - chemistry</subject><subject>Chemistry</subject><subject>Exact sciences and technology</subject><subject>General and physical chemistry</subject><subject>Hydrocarbons - chemistry</subject><subject>Microscopy, Atomic Force</subject><subject>Models, Chemical</subject><subject>Phenylacetates - chemistry</subject><subject>Phenylacetic acid</subject><subject>Phenylglycine</subject><subject>Polymers - chemistry</subject><subject>Raman spectra</subject><subject>Solid-liquid interface</subject><subject>Steel - chemistry</subject><subject>Surface physical chemistry</subject><subject>Surface-Active Agents - chemistry</subject><subject>Surface-enhanced Raman spectroscopy</subject><subject>Temperature</subject><issn>0021-9797</issn><issn>1095-7103</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2003</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqF0E1uEzEUwHELgWhaOALIGxAsBt4b25l4hVBFAakSCz62lvP8hhpNZoLtqZQdd-AkXIRDcBKcJqJLVpbl37OtvxCPEF4g4PLlR4AWG9vZ7hmo53VjugbviAWCNU2HoO6KxT9yIk5z_gaAaIy9L06wtWCh1QuRv8R18iVOox9kLnPYyamX5Yrlhosf_vz46UOe0toXlnEsnDzt8R5tr3jcDZ64RJKeYpB-DPL3r-Zw8HXYURxZVpzjcM1J5jn1lecH4l7vh8wPj-uZ-Hzx5tP5u-byw9v3568vG1IWS4PawLrXaAC9IdDIyiNZTYGMIqvUsg2q7xSZ1RJbZoaVQm3BAwZujVJn4unh3m2avs-ci9vETDwMfuRpzq5TRre4MhWaA6Q05Zy4d9sUNz7tHILb13Y3td0-pQPlbmo7rHOPjw_M6w2H26lj3gqeHIHP5Ic--ZFivnXa6vp-W92rg-Oa4zpycpkij8QhJqbiwhT_85W_UbuejQ</recordid><startdate>20030715</startdate><enddate>20030715</enddate><creator>Castro, J.L</creator><creator>López Ramı́rez, M.R</creator><creator>López Tocón, I</creator><creator>Otero, J.C</creator><general>Elsevier Inc</general><general>Elsevier</general><scope>IQODW</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope></search><sort><creationdate>20030715</creationdate><title>Vibrational study of the metal–adsorbate interaction of phenylacetic acid and α-phenylglycine on silver surfaces</title><author>Castro, J.L ; López Ramı́rez, M.R ; López Tocón, I ; Otero, J.C</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c391t-1450bf41501a5c041e3a1c94cdc53c93362d3f73c58612eee0831490a01de2533</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2003</creationdate><topic>Adsorption</topic><topic>Biophysical Phenomena</topic><topic>Biophysics</topic><topic>Carbon - chemistry</topic><topic>Chemistry</topic><topic>Exact sciences and technology</topic><topic>General and physical chemistry</topic><topic>Hydrocarbons - chemistry</topic><topic>Microscopy, Atomic Force</topic><topic>Models, Chemical</topic><topic>Phenylacetates - chemistry</topic><topic>Phenylacetic acid</topic><topic>Phenylglycine</topic><topic>Polymers - chemistry</topic><topic>Raman spectra</topic><topic>Solid-liquid interface</topic><topic>Steel - chemistry</topic><topic>Surface physical chemistry</topic><topic>Surface-Active Agents - chemistry</topic><topic>Surface-enhanced Raman spectroscopy</topic><topic>Temperature</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Castro, J.L</creatorcontrib><creatorcontrib>López Ramı́rez, M.R</creatorcontrib><creatorcontrib>López Tocón, I</creatorcontrib><creatorcontrib>Otero, J.C</creatorcontrib><collection>Pascal-Francis</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><jtitle>Journal of colloid and interface science</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Castro, J.L</au><au>López Ramı́rez, M.R</au><au>López Tocón, I</au><au>Otero, J.C</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Vibrational study of the metal–adsorbate interaction of phenylacetic acid and α-phenylglycine on silver surfaces</atitle><jtitle>Journal of colloid and interface science</jtitle><addtitle>J Colloid Interface Sci</addtitle><date>2003-07-15</date><risdate>2003</risdate><volume>263</volume><issue>2</issue><spage>357</spage><epage>363</epage><pages>357-363</pages><issn>0021-9797</issn><eissn>1095-7103</eissn><coden>JCISA5</coden><abstract>Raman and SERS spectra of phenylacetic acid and
α-phenylglycine on silver sols have been recorded at several concentrations and pH values. The
α-phenylglycine has been also studied in D
2O. The respective vibrational assignments have been proposed and the analysis of the SERS spectra has made it possible to conclude that phenylacetic acid links to the metal through its carboxylate group only, while
α-phenylglycine links also through its amino group. In both cases the aromatic ring seems to be almost perpendicular to the metal surface. On the other hand, the contribution of the charge transfer (CT) mechanism to the enhancement of the SERS spectra has been calculated as well and it is found to be very important in both molecules. The band most enhanced by this mechanism is that of vibration 8a, mainly in
α-phenylglycine.</abstract><cop>San Diego, CA</cop><pub>Elsevier Inc</pub><pmid>12909024</pmid><doi>10.1016/S0021-9797(03)00257-1</doi><tpages>7</tpages></addata></record> |
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| issn | 0021-9797 1095-7103 |
| language | eng |
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| source | MEDLINE; Elsevier ScienceDirect Journals |
| subjects | Adsorption Biophysical Phenomena Biophysics Carbon - chemistry Chemistry Exact sciences and technology General and physical chemistry Hydrocarbons - chemistry Microscopy, Atomic Force Models, Chemical Phenylacetates - chemistry Phenylacetic acid Phenylglycine Polymers - chemistry Raman spectra Solid-liquid interface Steel - chemistry Surface physical chemistry Surface-Active Agents - chemistry Surface-enhanced Raman spectroscopy Temperature |
| title | Vibrational study of the metal–adsorbate interaction of phenylacetic acid and α-phenylglycine on silver surfaces |
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