Electron transfer in SAM/cytochrome/polyelectrolyte hybrid systems on electrodes: A time-resolved surface-enhanced resonance raman study
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 retai...
Guardado en:
| Publicado: |
2007
|
|---|---|
| Materias: | |
| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_07437463_v23_n22_p11289_Grochol http://hdl.handle.net/20.500.12110/paper_07437463_v23_n22_p11289_Grochol |
| Aporte de: |
| id |
paper:paper_07437463_v23_n22_p11289_Grochol |
|---|---|
| record_format |
dspace |
| spelling |
paper:paper_07437463_v23_n22_p11289_Grochol2023-06-08T15:44:54Z Electron transfer in SAM/cytochrome/polyelectrolyte hybrid systems on electrodes: A time-resolved surface-enhanced resonance raman study 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 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. 2007 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_07437463_v23_n22_p11289_Grochol http://hdl.handle.net/20.500.12110/paper_07437463_v23_n22_p11289_Grochol |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
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 |
| spellingShingle |
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 Electron transfer in SAM/cytochrome/polyelectrolyte hybrid systems on electrodes: A time-resolved surface-enhanced resonance raman study |
| topic_facet |
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 |
| description |
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. |
| title |
Electron transfer in SAM/cytochrome/polyelectrolyte hybrid systems on electrodes: A time-resolved surface-enhanced resonance raman study |
| title_short |
Electron transfer in SAM/cytochrome/polyelectrolyte hybrid systems on electrodes: A time-resolved surface-enhanced resonance raman study |
| title_full |
Electron transfer in SAM/cytochrome/polyelectrolyte hybrid systems on electrodes: A time-resolved surface-enhanced resonance raman study |
| title_fullStr |
Electron transfer in SAM/cytochrome/polyelectrolyte hybrid systems on electrodes: A time-resolved surface-enhanced resonance raman study |
| title_full_unstemmed |
Electron transfer in SAM/cytochrome/polyelectrolyte hybrid systems on electrodes: A time-resolved surface-enhanced resonance raman study |
| title_sort |
electron transfer in sam/cytochrome/polyelectrolyte hybrid systems on electrodes: a time-resolved surface-enhanced resonance raman study |
| publishDate |
2007 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_07437463_v23_n22_p11289_Grochol http://hdl.handle.net/20.500.12110/paper_07437463_v23_n22_p11289_Grochol |
| _version_ |
1768546449294884864 |