Induced Surface Enhancement in Coral Pt Island Films Attached to Nanostructured Ag Electrodes
Coral Pt islands films are deposited via electrochemical reduction on silica-coated nanostructured Ag electrodes. From these devices surface-enhanced (resonance) Raman [SE(R)R] signals of molecules exclusively attached to Pt are obtained with intensity up to 50% of the value determined for Ag. SE(R)...
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| Veröffentlicht in: | Langmuir 2012-04, Vol.28 (13), p.5819-5825 |
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| creator | Ly, H. Khoa Köhler, Christopher Fischer, Anna Kabuss, Julia Schlosser, Felix Schoth, Mario Knorr, Andreas Weidinger, Inez M |
| description | Coral Pt islands films are deposited via electrochemical reduction on silica-coated nanostructured Ag electrodes. From these devices surface-enhanced (resonance) Raman [SE(R)R] signals of molecules exclusively attached to Pt are obtained with intensity up to 50% of the value determined for Ag. SE(R)R spectroscopic investigations are carried out with different probe molecules, silica-coating thicknesses, and excitation lines. Additionally, field enhancement calculations on Ag–SiO2–Pt support geometries are performed to elucidate the influence of the Pt island film nanostructure on the observed Raman intensities. It is concluded that the nonperfect coating of the Pt island film promotes the efficiency of the induced Pt SER activity. Comparison with similar measurements on Ag–SiO2–Au electrodes further suggests that the chemical nature of the deposited metal island film plays a minor role for the SE(R)R intensity. |
| doi_str_mv | 10.1021/la205139g |
| format | Article |
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Khoa ; Köhler, Christopher ; Fischer, Anna ; Kabuss, Julia ; Schlosser, Felix ; Schoth, Mario ; Knorr, Andreas ; Weidinger, Inez M</creator><creatorcontrib>Ly, H. Khoa ; Köhler, Christopher ; Fischer, Anna ; Kabuss, Julia ; Schlosser, Felix ; Schoth, Mario ; Knorr, Andreas ; Weidinger, Inez M</creatorcontrib><description>Coral Pt islands films are deposited via electrochemical reduction on silica-coated nanostructured Ag electrodes. From these devices surface-enhanced (resonance) Raman [SE(R)R] signals of molecules exclusively attached to Pt are obtained with intensity up to 50% of the value determined for Ag. SE(R)R spectroscopic investigations are carried out with different probe molecules, silica-coating thicknesses, and excitation lines. Additionally, field enhancement calculations on Ag–SiO2–Pt support geometries are performed to elucidate the influence of the Pt island film nanostructure on the observed Raman intensities. It is concluded that the nonperfect coating of the Pt island film promotes the efficiency of the induced Pt SER activity. Comparison with similar measurements on Ag–SiO2–Au electrodes further suggests that the chemical nature of the deposited metal island film plays a minor role for the SE(R)R intensity.</description><identifier>ISSN: 0743-7463</identifier><identifier>EISSN: 1520-5827</identifier><identifier>DOI: 10.1021/la205139g</identifier><identifier>PMID: 22400800</identifier><identifier>CODEN: LANGD5</identifier><language>eng</language><publisher>Washington, DC: American Chemical Society</publisher><subject>Chemistry ; Cytochromes c - chemistry ; Electrochemistry ; Electrodes ; Exact sciences and technology ; General and physical chemistry ; Metal Nanoparticles - chemistry ; Platinum - chemistry ; Silver - chemistry ; Spectrum Analysis, Raman - instrumentation ; Surface Properties</subject><ispartof>Langmuir, 2012-04, Vol.28 (13), p.5819-5825</ispartof><rights>Copyright © 2012 American Chemical Society</rights><rights>2015 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-a344t-54f2d1a369e59b05769ed538a29c9784d89aa0f92b4f684d1b4ffe4a8854b22a3</citedby><cites>FETCH-LOGICAL-a344t-54f2d1a369e59b05769ed538a29c9784d89aa0f92b4f684d1b4ffe4a8854b22a3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://pubs.acs.org/doi/pdf/10.1021/la205139g$$EPDF$$P50$$Gacs$$H</linktopdf><linktohtml>$$Uhttps://pubs.acs.org/doi/10.1021/la205139g$$EHTML$$P50$$Gacs$$H</linktohtml><link.rule.ids>314,776,780,2751,27055,27903,27904,56716,56766</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=25761687$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/22400800$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Ly, H. 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Additionally, field enhancement calculations on Ag–SiO2–Pt support geometries are performed to elucidate the influence of the Pt island film nanostructure on the observed Raman intensities. It is concluded that the nonperfect coating of the Pt island film promotes the efficiency of the induced Pt SER activity. Comparison with similar measurements on Ag–SiO2–Au electrodes further suggests that the chemical nature of the deposited metal island film plays a minor role for the SE(R)R intensity.</description><subject>Chemistry</subject><subject>Cytochromes c - chemistry</subject><subject>Electrochemistry</subject><subject>Electrodes</subject><subject>Exact sciences and technology</subject><subject>General and physical chemistry</subject><subject>Metal Nanoparticles - chemistry</subject><subject>Platinum - chemistry</subject><subject>Silver - chemistry</subject><subject>Spectrum Analysis, Raman - instrumentation</subject><subject>Surface Properties</subject><issn>0743-7463</issn><issn>1520-5827</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2012</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNptkE1LAzEQhoMotlYP_gHJRcTDar72I8dSWi2ICupRlmmSbbdkd2uSPfjvjbS2F09vMjyZmTwIXVJyRwmj9xYYSSmXyyM0pCkjSVqw_BgNSS54kouMD9CZ92tCiORCnqIBY4KQgpAh-py3uldG47feVaAMnrYraJVpTBtw3eJJ58Di14Dn3kKr8ay2jcfjEECt4qvQ4WdoOx9cr0LvYmW8xFNrVHCdNv4cnVRgvbnY5Qh9zKbvk8fk6eVhPhk_JcCFCEkqKqYp8EyaVC5ImseDTnkBTCqZF0IXEoBUki1ElcUrjVkZAUWRigVjwEfoZtt347qv3vhQNrVXxsaVTdf7UmYiGso4jeTtllSu896Zqty4ugH3XVJS_sos9zIje7Xr2i8ao_fkn70IXO8A8Aps5aK52h-4-BGaFfmBA-XLdde7Nsr4Z-APiD-HHA</recordid><startdate>20120403</startdate><enddate>20120403</enddate><creator>Ly, H. 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Khoa</creatorcontrib><creatorcontrib>Köhler, Christopher</creatorcontrib><creatorcontrib>Fischer, Anna</creatorcontrib><creatorcontrib>Kabuss, Julia</creatorcontrib><creatorcontrib>Schlosser, Felix</creatorcontrib><creatorcontrib>Schoth, Mario</creatorcontrib><creatorcontrib>Knorr, Andreas</creatorcontrib><creatorcontrib>Weidinger, Inez M</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>Langmuir</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Ly, H. Khoa</au><au>Köhler, Christopher</au><au>Fischer, Anna</au><au>Kabuss, Julia</au><au>Schlosser, Felix</au><au>Schoth, Mario</au><au>Knorr, Andreas</au><au>Weidinger, Inez M</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Induced Surface Enhancement in Coral Pt Island Films Attached to Nanostructured Ag Electrodes</atitle><jtitle>Langmuir</jtitle><addtitle>Langmuir</addtitle><date>2012-04-03</date><risdate>2012</risdate><volume>28</volume><issue>13</issue><spage>5819</spage><epage>5825</epage><pages>5819-5825</pages><issn>0743-7463</issn><eissn>1520-5827</eissn><coden>LANGD5</coden><abstract>Coral Pt islands films are deposited via electrochemical reduction on silica-coated nanostructured Ag electrodes. From these devices surface-enhanced (resonance) Raman [SE(R)R] signals of molecules exclusively attached to Pt are obtained with intensity up to 50% of the value determined for Ag. SE(R)R spectroscopic investigations are carried out with different probe molecules, silica-coating thicknesses, and excitation lines. Additionally, field enhancement calculations on Ag–SiO2–Pt support geometries are performed to elucidate the influence of the Pt island film nanostructure on the observed Raman intensities. It is concluded that the nonperfect coating of the Pt island film promotes the efficiency of the induced Pt SER activity. Comparison with similar measurements on Ag–SiO2–Au electrodes further suggests that the chemical nature of the deposited metal island film plays a minor role for the SE(R)R intensity.</abstract><cop>Washington, DC</cop><pub>American Chemical Society</pub><pmid>22400800</pmid><doi>10.1021/la205139g</doi><tpages>7</tpages></addata></record> |
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| subjects | Chemistry Cytochromes c - chemistry Electrochemistry Electrodes Exact sciences and technology General and physical chemistry Metal Nanoparticles - chemistry Platinum - chemistry Silver - chemistry Spectrum Analysis, Raman - instrumentation Surface Properties |
| title | Induced Surface Enhancement in Coral Pt Island Films Attached to Nanostructured Ag Electrodes |
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