Characterization of the Adsorption of Ru-bpy Dyes on Mesoporous TiO2 Films with UV−Vis, Raman, and FTIR Spectroscopies
In the present work the adsorption of a new dye, [Ru(dcbpyH2)2(bpy-TPA2)](PF6)2, and the well-known (Bu4N)2[Ru(dcbpyH)2(NCS)2] complex on mesoporous anatase films were investigated to clarify the role of the carboxylate groups in the anchoring process of the dyes on the semiconductor surface. For th...
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| Veröffentlicht in: | The journal of physical chemistry. B 2006-05, Vol.110 (17), p.8723-8730 |
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| container_issue | 17 |
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| container_title | The journal of physical chemistry. B |
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| creator | Pérez León, C Kador, L Peng, B Thelakkat, M |
| description | In the present work the adsorption of a new dye, [Ru(dcbpyH2)2(bpy-TPA2)](PF6)2, and the well-known (Bu4N)2[Ru(dcbpyH)2(NCS)2] complex on mesoporous anatase films were investigated to clarify the role of the carboxylate groups in the anchoring process of the dyes on the semiconductor surface. For this purpose UV−vis, Raman, resonance Raman, and ATR-FTIR spectroscopies have been used. The results of the Raman experiments at different excitation wavelengths demonstrate that photoinduced charge-transfer processes take place efficiently between the adsorbate and the substrate. Moreover, this is the first time that the Raman spectrum of a Ru-bpy dye (in this case, the dye N719) adsorbed on TiO2 has been obtained without the resonance condition, only by means of SERS enhancement. The coordination of both complexes on the TiO2 paste films is proposed to occur via bidentate or bridging linkage. |
| doi_str_mv | 10.1021/jp0561827 |
| format | Article |
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For this purpose UV−vis, Raman, resonance Raman, and ATR-FTIR spectroscopies have been used. The results of the Raman experiments at different excitation wavelengths demonstrate that photoinduced charge-transfer processes take place efficiently between the adsorbate and the substrate. Moreover, this is the first time that the Raman spectrum of a Ru-bpy dye (in this case, the dye N719) adsorbed on TiO2 has been obtained without the resonance condition, only by means of SERS enhancement. The coordination of both complexes on the TiO2 paste films is proposed to occur via bidentate or bridging linkage.</description><identifier>ISSN: 1520-6106</identifier><identifier>EISSN: 1520-5207</identifier><identifier>DOI: 10.1021/jp0561827</identifier><identifier>PMID: 16640428</identifier><language>eng</language><publisher>United States: American Chemical Society</publisher><subject>Adsorption ; Coloring Agents - chemistry ; Hydrogen Bonding ; Membranes, Artificial ; Molecular Structure ; Organometallic Compounds - chemistry ; Porosity ; Pyridines - chemistry ; Ruthenium - chemistry ; Sensitivity and Specificity ; Spectrophotometry, Ultraviolet - methods ; Spectroscopy, Fourier Transform Infrared - methods ; Spectrum Analysis, Raman - methods ; Surface Properties ; Titanium - chemistry</subject><ispartof>The journal of physical chemistry. 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The coordination of both complexes on the TiO2 paste films is proposed to occur via bidentate or bridging linkage.</description><subject>Adsorption</subject><subject>Coloring Agents - chemistry</subject><subject>Hydrogen Bonding</subject><subject>Membranes, Artificial</subject><subject>Molecular Structure</subject><subject>Organometallic Compounds - chemistry</subject><subject>Porosity</subject><subject>Pyridines - chemistry</subject><subject>Ruthenium - chemistry</subject><subject>Sensitivity and Specificity</subject><subject>Spectrophotometry, Ultraviolet - methods</subject><subject>Spectroscopy, Fourier Transform Infrared - methods</subject><subject>Spectrum Analysis, Raman - methods</subject><subject>Surface Properties</subject><subject>Titanium - chemistry</subject><issn>1520-6106</issn><issn>1520-5207</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2006</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNo9kUtOwzAQhi0E4r3gAsgbWBHwo3aSJSoUEFRFpXRrOclEdWniYCeCcgLWHJGTYNTCYjSjfz6N5p9B6IiSc0oYvZg3REiasHgD7VLBSBQi3lzXkhK5g_a8nxPCBEvkNtqhUvZIjyW76L0_007nLTjzoVtja2xL3M4AXxbeuuZPGXdR1izx1RI8DsoQvG2ss53HEzNieGAWlcdvpp3h5-n359fU-DM81pWuz7CuCzyY3I3xUwN566zPbWPAH6CtUi88HK7zPnoeXE_6t9HD6Oauf_kQ6eChjRIKWZEJVsZCAyFlIco85tDjPJe5ZpxnNOiJyFIepyJJGSeUpKygQHux4MD30elqbuPsawe-VZXxOSwWuoawv5JxSgSVaQCP12CXVVCoxplKu6X6u1UAohVgfAvv_33tXsIQHgs1eXxSyf2YT4cpU4PAn6x4nXs1t52rg09Fifr9mfr_Gf8BfTKFRQ</recordid><startdate>20060504</startdate><enddate>20060504</enddate><creator>Pérez León, C</creator><creator>Kador, L</creator><creator>Peng, B</creator><creator>Thelakkat, M</creator><general>American Chemical Society</general><scope>BSCLL</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>7X8</scope></search><sort><creationdate>20060504</creationdate><title>Characterization of the Adsorption of Ru-bpy Dyes on Mesoporous TiO2 Films with UV−Vis, Raman, and FTIR Spectroscopies</title><author>Pérez León, C ; Kador, L ; Peng, B ; Thelakkat, M</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a207t-81ebdb52f75ae00fd5fc73e433c6ca233b1ae085b93795892301092d1e14753e3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2006</creationdate><topic>Adsorption</topic><topic>Coloring Agents - chemistry</topic><topic>Hydrogen Bonding</topic><topic>Membranes, Artificial</topic><topic>Molecular Structure</topic><topic>Organometallic Compounds - chemistry</topic><topic>Porosity</topic><topic>Pyridines - chemistry</topic><topic>Ruthenium - chemistry</topic><topic>Sensitivity and Specificity</topic><topic>Spectrophotometry, Ultraviolet - methods</topic><topic>Spectroscopy, Fourier Transform Infrared - methods</topic><topic>Spectrum Analysis, Raman - methods</topic><topic>Surface Properties</topic><topic>Titanium - chemistry</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Pérez León, C</creatorcontrib><creatorcontrib>Kador, L</creatorcontrib><creatorcontrib>Peng, B</creatorcontrib><creatorcontrib>Thelakkat, M</creatorcontrib><collection>Istex</collection><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. B</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Pérez León, C</au><au>Kador, L</au><au>Peng, B</au><au>Thelakkat, M</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Characterization of the Adsorption of Ru-bpy Dyes on Mesoporous TiO2 Films with UV−Vis, Raman, and FTIR Spectroscopies</atitle><jtitle>The journal of physical chemistry. B</jtitle><addtitle>J. Phys. Chem. B</addtitle><date>2006-05-04</date><risdate>2006</risdate><volume>110</volume><issue>17</issue><spage>8723</spage><epage>8730</epage><pages>8723-8730</pages><issn>1520-6106</issn><eissn>1520-5207</eissn><abstract>In the present work the adsorption of a new dye, [Ru(dcbpyH2)2(bpy-TPA2)](PF6)2, and the well-known (Bu4N)2[Ru(dcbpyH)2(NCS)2] complex on mesoporous anatase films were investigated to clarify the role of the carboxylate groups in the anchoring process of the dyes on the semiconductor surface. 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| source | MEDLINE; American Chemical Society Journals |
| subjects | Adsorption Coloring Agents - chemistry Hydrogen Bonding Membranes, Artificial Molecular Structure Organometallic Compounds - chemistry Porosity Pyridines - chemistry Ruthenium - chemistry Sensitivity and Specificity Spectrophotometry, Ultraviolet - methods Spectroscopy, Fourier Transform Infrared - methods Spectrum Analysis, Raman - methods Surface Properties Titanium - chemistry |
| title | Characterization of the Adsorption of Ru-bpy Dyes on Mesoporous TiO2 Films with UV−Vis, Raman, and FTIR Spectroscopies |
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