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Abstract:

Silver electrodes were covered with mixed self-assembled monolayers (SAMs) of 11-mercaptoundecanoic acid (MUA) and 11-mercaptoundecanol (MU) and subsequently coated with alternating layers of cytochrome c (Cyt) and poly(anilinesulfonic acid) (PASA). The immobilized protein is electroactive and retains its native structure. Compared to the case of systems on gold electrodes, the stability of the assembly was found to be decreased. The redox process of Cyt is accompanied by reversible oxidation-reduction of PASA as revealed by the comparative surface-enhanced resonance Raman (SERR) analysis of assemblies including Cyt and the redox-inactive apo-cytochrome c. Time-resolved SERR experiments show a fast electron exchange between the protein and the polyelectrolyte that may play a supporting role in the electric communication of thicker multilayer assemblies employed as sensors. © 2007 American Chemical Society.

Registro:

Documento: Artículo
Título:Electron transfer in SAM/cytochrome/polyelectrolyte hybrid systems on electrodes: A time-resolved surface-enhanced resonance raman study
Autor:Grochol, J.; Dronov, R.; Lisdat, F.; Hildebrandt, P.; Murgida, D.H.
Filiación:Institut für Chemie, Technische Universität Berlin, Sekr. PC14, Straße des 17. Juni 135, D-10623 Berlin, Germany
Max Planck Institute of Colloids and Interfaces, Am Mühlenberg 1, D-14424 Golm, Germany
University of Potsdam, Karl-Liebknecht-Str. 24-25 H25, D-14476 Golm, Germany
Biosystems Technology, Wildau University of Applied Sciences, Bahnhofstr. 1, D-15745 Wildau, Germany
INQUIMAE, Departamento de Química Inorgánica, Analítica y Química Física, Ciudad Universitaria, Pab. II, P. I, C1428EHA Buenos Aires, Argentina
Department of Chemistry, Michigan State University, East Lansing, MI 48824, United States
Palabras clave:Mercaptoundecanoic acid; Poly(anilinesulfonic acid) (PASA); Reversible oxidation-reduction; Electrodes; Electron transitions; Polyelectrolytes; Proteins; Raman spectroscopy; Self assembled monolayers; 11 mercaptoundecanoic acid; 11 mercaptoundecanol; 11-mercaptoundecanoic acid; 11-mercaptoundecanol; aniline derivative; biomaterial; cytochrome c; electrolyte; fatty acid; fatty alcohol; gold; polyaniline; silver; thiol derivative; unclassified drug; animal; article; electrode; electron transport; genetic procedures; oxidation reduction reaction; Raman spectrometry; surface property; Aniline Compounds; Animals; Biosensing Techniques; Coated Materials, Biocompatible; Cytochromes c; Electrodes; Electrolytes; Electron Transport; Fatty Acids; Fatty Alcohols; Gold; Oxidation-Reduction; Silver; Spectrum Analysis, Raman; Sulfhydryl Compounds; Surface Properties
Año:2007
Volumen:23
Número:22
Página de inicio:11289
Página de fin:11294
DOI: http://dx.doi.org/10.1021/la701470d
Título revista:Langmuir
Título revista abreviado:Langmuir
ISSN:07437463
CODEN:LANGD
CAS:cytochrome c, 9007-43-6, 9064-84-0; gold, 7440-57-5; polyaniline, 25233-30-1; silver, 7440-22-4; thiol derivative, 13940-21-1; 11-mercaptoundecanoic acid; 11-mercaptoundecanol; Aniline Compounds; Coated Materials, Biocompatible; Cytochromes c, 9007-43-6; Electrolytes; Fatty Acids; Fatty Alcohols; Gold, 7440-57-5; Silver, 7440-22-4; Sulfhydryl Compounds; polyaniline
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_07437463_v23_n22_p11289_Grochol

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Citas:

---------- APA ----------
Grochol, J., Dronov, R., Lisdat, F., Hildebrandt, P. & Murgida, D.H. (2007) . Electron transfer in SAM/cytochrome/polyelectrolyte hybrid systems on electrodes: A time-resolved surface-enhanced resonance raman study. Langmuir, 23(22), 11289-11294.
http://dx.doi.org/10.1021/la701470d
---------- CHICAGO ----------
Grochol, J., Dronov, R., Lisdat, F., Hildebrandt, P., Murgida, D.H. "Electron transfer in SAM/cytochrome/polyelectrolyte hybrid systems on electrodes: A time-resolved surface-enhanced resonance raman study" . Langmuir 23, no. 22 (2007) : 11289-11294.
http://dx.doi.org/10.1021/la701470d
---------- MLA ----------
Grochol, J., Dronov, R., Lisdat, F., Hildebrandt, P., Murgida, D.H. "Electron transfer in SAM/cytochrome/polyelectrolyte hybrid systems on electrodes: A time-resolved surface-enhanced resonance raman study" . Langmuir, vol. 23, no. 22, 2007, pp. 11289-11294.
http://dx.doi.org/10.1021/la701470d
---------- VANCOUVER ----------
Grochol, J., Dronov, R., Lisdat, F., Hildebrandt, P., Murgida, D.H. Electron transfer in SAM/cytochrome/polyelectrolyte hybrid systems on electrodes: A time-resolved surface-enhanced resonance raman study. Langmuir. 2007;23(22):11289-11294.
http://dx.doi.org/10.1021/la701470d