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| Electrochemical Studies of the Recognition Interaction of Rhodamine B with DNA | |
| 引用本文： | KuiJIAO QingJunLI WeiSUN ZhenYongWANG. Electrochemical Studies of the Recognition Interaction of Rhodamine B with DNA[J]. 中国化学快报, 2005, 16(3): 382-384 |
| 作者姓名： | KuiJIAO QingJunLI WeiSUN ZhenYongWANG |
| 作者单位： | CollegeofChemistryandMolecularEngineering,QingdaoUniversityofScienceandTechnology,Qingdao266042 |
| 摘 要： | The recognition interaction of rhodamine B (RB) with DNA was studied in pH 7.5 Britton-Robinson (B-R) buffer solution by electrochemical techniques. An irreversible oxidation peak at glassy carbon electrode was obtained at 0.92V (vs. SCE). After the addition of DNA into the RB solution, the peak current of RB decreased apparently without the shift of peak potential. The electrochemical parameters such as the charge transfer coefficient α and the electrode reaction standard rate constant ks of RB in the absence and presence of DNA were determined, which did not change, indicating that a non-electroactive complex was formed, so the concentration of RB in the solution decreased and the peak current decreased correspondingly. |
| 关 键 词： | 电气化学研究 若丹明B DNA 相互作用 玻碳电极 |
Electrochemical Studies of the Recognition Interaction of Rhodamine B with DNA |
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| Kui JIAO,Qing Jun LI,Wei SUN,Zhen Yong WANG College of Chemistry and Molecular Engineering,Qingdao University of Science and Technology,Qingdao. Electrochemical Studies of the Recognition Interaction of Rhodamine B with DNA[J]. Chinese Chemical Letters, 2005, 16(3): 382-384 | |
| Authors: | Kui JIAO Qing Jun LI Wei SUN Zhen Yong WANG College of Chemistry Molecular Engineering Qingdao University of Science Technology Qingdao |
| Affiliation: | Kui JIAO*,Qing Jun LI,Wei SUN,Zhen Yong WANG College of Chemistry and Molecular Engineering,Qingdao University of Science and Technology,Qingdao 266042 |
| Abstract: | The recognition interaction of rhodamine B (RB) with DNA was studied in pH 7.5 Britton-Robinson (B-R) buffer solution by electrochemical techniques. An irreversible oxidation peak at glassy carbon electrode was obtained at +0.92V (vs. SCE). After the addition of DNA into the RB solution, the peak current of RB decreased apparently without the shift of peak potential. The electrochemical parameters such as the charge transfer coefficient a and the electrode reaction standard rate constant ks of RB in the absence and presence of DNA were determined, which did not change, indicating that a non-electroactive complex was formed, so the concentration of RB in the solution decreased and the peak current decreased correspondingly. |
| Keywords: | Rhodamine B DNA recognition interaction electrochemistry. |
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