کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
220255 463323 2009 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Electrochemical conversion of poly-aniline into a redox polymer in the presence of nordihydroguaiaretic acid
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Electrochemical conversion of poly-aniline into a redox polymer in the presence of nordihydroguaiaretic acid
چکیده انگلیسی

Thin films of poly-aniline (PANI) undergo electrochemical restructuring when subjected to potential cycling in the presence of nordihydroguaiaretic acid (NDGA). As a consequence, the properties of PANI change from those of a conducting polymer to those of a redox polymer. Thus formed composite PANI–NDGA films show redox activity characterized by two new electrochemical couples observed at mid-peak potentials of 0.32 and 0.52 V (vs. Ag/AgCl, 0.5 M H2SO4). The peak currents exhibit a linear dependence on the potential scan rate as expected for surface-confined redox species and the peak potentials shift toward lower potentials with increasing solution pH at a rate of ca. 60 mV/pH unit. The PANI–NDGA composite film was found to electrocatalyze the oxidation of NADH in a nearly neutral (pH 7.4) phosphate buffer.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Electroanalytical Chemistry - Volume 626, Issues 1–2, 15 February 2009, Pages 143–148
نویسندگان
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