Characterization of self-assembled thiols monolayers on gold surface by electrochemical impedance spectroscopy
Thiols with different alkyl chain length and containing COOH terminal group were self-assembled on gold electrodes. The electron transfer of Fe(CN)6(3-/4-) couple to the electrode was studied at different pH by means cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). Changes in solution pH resulted in the charge variation of the self-assembled monolayer (SAM) terminal group and, consequently, the electrostatic interaction of SAM with the electroactive species in the solution.
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Sociedade Brasileira de Química
2004
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oai:scielo:S0103-505320040006000112005-01-24Characterization of self-assembled thiols monolayers on gold surface by electrochemical impedance spectroscopyMendes,Renata K.Freire,Renato S.Fonseca,Carla P.Neves,SilmaraKubota,Lauro T. self-assembled monolayer cyclic voltammetry electrochemical impedance spectroscopy gold electrodes surface modification Thiols with different alkyl chain length and containing COOH terminal group were self-assembled on gold electrodes. The electron transfer of Fe(CN)6(3-/4-) couple to the electrode was studied at different pH by means cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). Changes in solution pH resulted in the charge variation of the self-assembled monolayer (SAM) terminal group and, consequently, the electrostatic interaction of SAM with the electroactive species in the solution.info:eu-repo/semantics/openAccessSociedade Brasileira de QuímicaJournal of the Brazilian Chemical Society v.15 n.6 20042004-12-01info:eu-repo/semantics/articletext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532004000600011en10.1590/S0103-50532004000600011 |
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| author |
Mendes,Renata K. Freire,Renato S. Fonseca,Carla P. Neves,Silmara Kubota,Lauro T. |
| spellingShingle |
Mendes,Renata K. Freire,Renato S. Fonseca,Carla P. Neves,Silmara Kubota,Lauro T. Characterization of self-assembled thiols monolayers on gold surface by electrochemical impedance spectroscopy |
| author_facet |
Mendes,Renata K. Freire,Renato S. Fonseca,Carla P. Neves,Silmara Kubota,Lauro T. |
| author_sort |
Mendes,Renata K. |
| title |
Characterization of self-assembled thiols monolayers on gold surface by electrochemical impedance spectroscopy |
| title_short |
Characterization of self-assembled thiols monolayers on gold surface by electrochemical impedance spectroscopy |
| title_full |
Characterization of self-assembled thiols monolayers on gold surface by electrochemical impedance spectroscopy |
| title_fullStr |
Characterization of self-assembled thiols monolayers on gold surface by electrochemical impedance spectroscopy |
| title_full_unstemmed |
Characterization of self-assembled thiols monolayers on gold surface by electrochemical impedance spectroscopy |
| title_sort |
characterization of self-assembled thiols monolayers on gold surface by electrochemical impedance spectroscopy |
| description |
Thiols with different alkyl chain length and containing COOH terminal group were self-assembled on gold electrodes. The electron transfer of Fe(CN)6(3-/4-) couple to the electrode was studied at different pH by means cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). Changes in solution pH resulted in the charge variation of the self-assembled monolayer (SAM) terminal group and, consequently, the electrostatic interaction of SAM with the electroactive species in the solution. |
| publisher |
Sociedade Brasileira de Química |
| publishDate |
2004 |
| url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532004000600011 |
| work_keys_str_mv |
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| _version_ |
1756403210592976896 |