Electrocatalytic response of dopamine at a dl-homocysteine self-assembled gold electrode |
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| Authors: | Hui-Min Zhang Nan-Qiang Li Zhiwei Zhu |
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| Institution: | a Department of Chemistry, Peking University, Beijing 100871, PR China |
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| Abstract: | The gold electrode self-assembled with the homocysteine monolayer (Hcy/Au) is demonstrated to catalyze the electrochemical response of dopamine (DA) by cyclic voltammetry. A pair of well-defined redox waves was obtained and the calculated standard rate constant (ks) is 2.1×10−2 cm/s at the self-assembled electrode. The reduction peak of DA can be used to determine the concentration of DA in presence of ascorbic acid (AA) owing to the Hcy/Au also catalyzing the electrochemical oxidation of AA. |
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| Keywords: | Electrocatalysis Dopamine Self-assembled electrode Cyclic voltammetry |
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