کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
220035 463312 2010 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Development of microelectrode arrays modified with inorganic–organic composite materials for dopamine electroanalysis
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Development of microelectrode arrays modified with inorganic–organic composite materials for dopamine electroanalysis
چکیده انگلیسی

New electrode materials based on composite inorganic redox material–organic conducting polymer for electroanalysis of dopamine were developed. The composite inorganic–organic coatings based on Prussian blue (PB) and poly(3,4-ethylenedioxythiophene) (PEDOT) have been prepared by electrochemical methods onto gold disk microelectrode arrays. Both insoluble and soluble forms of PB were prepared in situ inside the organic matrix and their electrochemical behaviour was investigated in electrolyte solution. The composite inorganic–organic coating containing the soluble PB form exhibited good electrocatalytic activity towards dopamine (DA) oxidation in aqueous buffered solutions. The DA concentration was determined by cyclic voltammetry in the presence of a high excess of ascorbic acid (AA). A linear response for DA concentrations ranging from 10 μM to 50 μM, in the presence of 1 mM AA, with a sensitivity of 460 μA/μM and a detection limit of 4.3 μM, have been obtained.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Electroanalytical Chemistry - Volume 639, Issues 1–2, 15 February 2010, Pages 147–153
نویسندگان
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