Enantioselectivity of Redox Reaction of DOPA at the Gold Electrode Modified with a Self-Assembled Monolayer of Homocysteine
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- 作者：Takuya Nakanishi ; Mariko Matsunaga ; Makoto Nagasaka ; Toru Asahi ; Tetsuya Osaka
- 刊名：Journal of the American Chemical Society
- 出版年：2006
- 出版时间：October 18, 2006
- 年：2006
- 卷：128
- 期：41
- 页码：13322 - 13323
- 全文大小：78K
- 年卷期：v.128,no.41(October 18, 2006)
- ISSN：1520-5126
文摘
The enantioselectivity of the self-assembled monolayer (SAM) of homocysteine formed on the (111)-oriented gold surface was investigated. We analyzed the redox behavior of 3,4-dihydroxyphenylalanine (DOPA), which is an electrochemically active chiral molecule, by means of cyclic voltammetry at a gold electrode modified with one enantiomeric form of homocysteine. It was demonstrated that the homocysteine SAM of one enantiomeric form blocked the redox reaction of only one enantiomer of DOPA, with cross inversion for the other enantiomer, in acidic solution.