کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
221390 463391 2006 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Voltammetric reduction of perinaphthenone in aqueous and non-aqueous media: An electrochemical ESR investigation
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Voltammetric reduction of perinaphthenone in aqueous and non-aqueous media: An electrochemical ESR investigation
چکیده انگلیسی

The electrochemical reduction of perinaphthenone on solid electrodes in aqueous and non-aqueous media is reported and paramagnetic species formed are characterised by use of electrochemical ESR, employing a tubular flow cell. In aqueous ethanol a single electron reduction process generates the radical anion which is protonated at pH < 9, as indicated by the shift of the voltammetric wave with pH. Observed ESR spectra are presented and signal intensity measurements show that the neutral radical has a lifetime close to 1 min. In acetonitrile, the reduction occurs in two waves. The first corresponds to the reversible electrogeneration of radical anions and these are found to be stable on the experimental timescale, whereas the second wave is attributed to the formation of the dianion, which undergoes a chemical reaction with the solvent. The behaviour of benzanthrone in acetonitrile is found to be similar to that of perinaphthenone.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Electroanalytical Chemistry - Volume 589, Issue 1, 1 April 2006, Pages 128–138
نویسندگان
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