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Feng, J.-J.; Gernert, U.; Sezer, M.; Kuhlmann, U.; Murgida, D.H.; David, C.; Richter, M.; Knorr, A.; Hildebrandt, P.; Weidinger, I.M. "Novel Au-Ag hybrid device for electrochemical SE(R)R spectroscopy in a wide potential and spectral range" (2009) Nano Letters. 9(1):298-303
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Abstract:

A nanostructured gold-silver-hybrid electrode for SER spectroelectrochemistry was developed which advantageously combines the electrochemical properties and chemical stability of Au and the strong surface enhancement of (resonance) Raman scattering by Ag. The layered device consists of a massive nanoscopically rough Ag electrode, a thin (2 nm) organic layer, and a ca. 20 nm thick Au film that may be coated by self-assembled monolayers for protein adsorption. The SERR-spectroscopic and electrochemical performance of this device is demonstrated using the heme protein cytochrome c as a benchmark model system, thereby extending, for the first time, SE(R)R studies of molecules on Au surfaces to excitation in the violet spectral range. The enhancement factor is only slightly lower than for Ag electrodes which can be rationalized in terms of an efficient transfer of plasmon resonance excitation from the Ag to the Au coating. This mechanism, which requires a thin dielectric layer between the two metals, is supported by theoretical calculations. © 2009 American Chemical Society.

Registro:

Documento: Artículo
Título:Novel Au-Ag hybrid device for electrochemical SE(R)R spectroscopy in a wide potential and spectral range
Autor:Feng, J.-J.; Gernert, U.; Sezer, M.; Kuhlmann, U.; Murgida, D.H.; David, C.; Richter, M.; Knorr, A.; Hildebrandt, P.; Weidinger, I.M.
Filiación:Institut für Chemie, Technische Universität Berlin, Sekr. PC 14, Strasse des 17, Juni 135, D-10623 Berlin, Germany
Zentraleinrichtung Elektronenmikroskopie, Technische Universität Berlin, Strasse des 17, Juni 135, D 10623 Berlin, Germany
Institut für Theoretische Physik, Technische Universiteit Berlin, EW 7-1, Hardenbergstr.36, D-10623 Berlin, Germany
Departamento de Quimica Inorgánica, Analítica y Quimica Física/INQUIMAE, Ciudad Universitaria, Pab.2, piso 1, C1428EHA Buenos Aires, Argentina
Institut für Chemie, Technische Universitat Berlin, Germany
Zentraleinrichtung Elektronenmikroskopie, Technische Universitat Berlin, Germany
Institut für Theoretische Physik, Technische Universitat Berlin, Germany
Universidad de Buenos Aires, Argentina
Palabras clave:Ag electrodes; Au films; Au surfaces; Benchmark models; Electrochemical performance; Enhancement factors; Heme proteins; Hybrid devices; Hybrid electrodes; Nanostructured golds; Organic layers; Plasmon resonances; Protein adsorptions; Spectral ranges; Surface enhancements; Theoretical calculations; Thin dielectric layers; Adsorption; Chemical stability; Electrochemical electrodes; Electrochemical properties; Gold deposits; Organic polymers; Porphyrins; Resonance; Self assembled monolayers; Silver; Spectroelectrochemistry; Spontaneous emission; Gold; gold; nanomaterial; silver; article; chemistry; computer aided design; electrochemistry; equipment; equipment design; instrumentation; materials testing; methodology; Raman spectrometry; reproducibility; sensitivity and specificity; surface plasmon resonance; ultrastructure; Computer-Aided Design; Electrochemistry; Equipment Design; Equipment Failure Analysis; Gold; Materials Testing; Nanostructures; Reproducibility of Results; Sensitivity and Specificity; Silver; Spectrum Analysis, Raman; Surface Plasmon Resonance
Año:2009
Volumen:9
Número:1
Página de inicio:298
Página de fin:303
DOI: http://dx.doi.org/10.1021/nl802934u
Título revista:Nano Letters
Título revista abreviado:Nano Lett.
ISSN:15306984
CAS:gold, 7440-57-5; silver, 7440-22-4; Gold, 7440-57-5; Silver, 7440-22-4
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_15306984_v9_n1_p298_Feng

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Citas:

---------- APA ----------
Feng, J.-J., Gernert, U., Sezer, M., Kuhlmann, U., Murgida, D.H., David, C., Richter, M.,..., Weidinger, I.M. (2009) . Novel Au-Ag hybrid device for electrochemical SE(R)R spectroscopy in a wide potential and spectral range. Nano Letters, 9(1), 298-303.
http://dx.doi.org/10.1021/nl802934u
---------- CHICAGO ----------
Feng, J.-J., Gernert, U., Sezer, M., Kuhlmann, U., Murgida, D.H., David, C., et al. "Novel Au-Ag hybrid device for electrochemical SE(R)R spectroscopy in a wide potential and spectral range" . Nano Letters 9, no. 1 (2009) : 298-303.
http://dx.doi.org/10.1021/nl802934u
---------- MLA ----------
Feng, J.-J., Gernert, U., Sezer, M., Kuhlmann, U., Murgida, D.H., David, C., et al. "Novel Au-Ag hybrid device for electrochemical SE(R)R spectroscopy in a wide potential and spectral range" . Nano Letters, vol. 9, no. 1, 2009, pp. 298-303.
http://dx.doi.org/10.1021/nl802934u
---------- VANCOUVER ----------
Feng, J.-J., Gernert, U., Sezer, M., Kuhlmann, U., Murgida, D.H., David, C., et al. Novel Au-Ag hybrid device for electrochemical SE(R)R spectroscopy in a wide potential and spectral range. Nano Lett. 2009;9(1):298-303.
http://dx.doi.org/10.1021/nl802934u