کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
192691 | 459749 | 2008 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
In situ ESR spectroscopic evidence of the spin-trapped superoxide radical, O2−, electrochemically generated in DMSO at room temperature
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
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چکیده انگلیسی
Superoxide radical (O2−) was both electrochemically generated and detected at room temperature. In situ ESR spectroelectrochemistry with spin trapping was used for the radical detection. That is, the O2− radical was obtained in a DMSO solution under cyclic voltammetry conditions as soon as the potential of the dioxygen electroreduction was reached. This radical reacted then with a 5,5-dimethyl-1-pyrroline-N-oxide (DMPO) spin-trap reagent present in solution to form the DMPO–OOH adduct. The hyperfine coupling constants determined for the adduct were aN = 1.285 mT, aHβ=1.042 mT and aHγ=0.142 mT in accord to those reported in literature.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochimica Acta - Volume 53, Issue 8, 10 March 2008, Pages 3412–3415
Journal: Electrochimica Acta - Volume 53, Issue 8, 10 March 2008, Pages 3412–3415
نویسندگان
Piotr Pieta, Andreas Petr, Wlodzimierz Kutner, Lothar Dunsch,