کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1269286 | 972448 | 2007 | 6 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Electrochemical behaviour of 2,8-dihydroxyadenine at a glassy carbon electrode Electrochemical behaviour of 2,8-dihydroxyadenine at a glassy carbon electrode](/preview/png/1269286.png)
The electrochemical behaviour of 2,8-dihydroxyadenine (2,8-DHA)– the main adenine oxidation product– has been investigated over a wide pH range at a glassy carbon electrode (GCE) using cyclic, differential pulse and square wave voltammetry.The oxidation of 2,8-DHA is a quasi-reversible process, pH dependent and occurs with the formation of a main oxidation product, P2,8-DHA, that strongly adsorbs on the electrode surface. The reduction of 2,8-DHA also occurs and is a reversible process in the absence of molecular oxygen. In electrolytes with pH between 4 and 9 two consecutive reversible charge transfer reactions were identified. However, it was observed that O2 interfered with the reductive electron transfer process of 2,8-DHA and that, in the presence of oxygen, the reduction of 2,8-DHA occurs at less negative potentials than in the absence of oxygen.
Journal: Bioelectrochemistry - Volume 70, Issue 1, January 2007, Pages 141–146