کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
178655 459311 2016 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Voltammetric behavior of selenocystine at modified gold substrates
ترجمه فارسی عنوان
رفتار ولتامتری selenocystine در بسترهای طلا اصلاح شده
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
چکیده انگلیسی


• The reduction of selenocystine at selenium-modified gold electrodes is reported.
• Diffusionally controlled voltammetry is observed following surface modification.
• The proposed gold–selenium film is readily achieved via electrochemical cycling under mild conditions.

The voltammetric response of seleno-l-cystine has been studied at gold substrates under physiological conditions. The reactivity of diselenides is utilized to generate a modified electrode surface, which in turn allows for electroanalysis of solution-based selenium species. Stable and reproducible voltammetry is observed for selenocystine reduction at pH 7 on selenium-modified gold substrates (Emid = − 486 mV vs. Ag/AgCl) and is consistent with a diffusionally controlled process. Modification of the gold surface is readily achieved via electrochemical cycling in the presence of a diselenide source at conventional scan rates. These studies afford voltammetric characterization of the selenocystine/selenocysteine redox couple under physiologically relevant conditions and highlight the potential utility of selenium-modified substrates for electroanalysis of chalcogen-containing species.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochemistry Communications - Volume 69, August 2016, Pages 28–31
نویسندگان
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