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Local Modulation of the Redox State of p‐Nitrothiophenol Self‐Assembled Monolayers Using the Direct Mode of Scanning Electrochemical Microscopy |
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| Authors: | Stefanie Schwamborn Leonard Stoica Dr. Sebastian Neugebauer Dr. Torsten Reda Dr. Hanns‐Ludwig Schmidt Prof. Dr. Wolfgang Schuhmann Prof. Dr. |
| Affiliation: | 1. Analytische Chemie–Elektoranalytik & Sensorik, Ruhr‐Universit?t Bochum, Universit?tsstr. 150, 44780 Bochum (Germany), Fax: (+49)?234‐3214683;2. MRC Dunn Human Nutrition Unit, Wellcome Trust/MRC Building, Hills Road, Cambridge CB2 2XY (UK);3. Prielhofweg 2, 84036 Landshut (Germany) |
| Abstract: | Local redox conversion of nitro end groups of a 4‐nitrothiophenol self‐assembled monolayer on gold is achieved by direct‐mode scanning electrochemical microscopy (SECM). Potential pulses are applied to the modified gold surface leading to local reduction of nitro end groups to either hydroxylamine (?0.47 V, see picture) or amino groups (?0.6 V) exclusively beneath the positioned SECM tip.  |
| Keywords: | micropatterning monolayers nitrothiophenol redox chemistry scanning electrochemical microscopy |