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Title
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Fabrication of Nanocomposite Containing Naphthoquinone and Nanogold Supported on Poly(2,6‐pyridinedicarboxylic acid) Film for Voltammetric Determination of <i>N</i>‐Acetyl‐<scp>L</scp>‐Cysteine
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Type
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JournalPaper
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Keywords
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Poly(2,6-pyridinedicarboxylic acid), Gold nanoparticles, 1,2-Naphthoquinone-4-sulfonic acid sodium,NAcetyl-l-cysteine
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Abstract
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A modified electrode was fabricated by grafting of poly (2,6-pyridinedicarboxylic acid) film (PDC) by electropolymerization of 2,6-pyridinedicarboxylic acid on the glassy carbon electrode (GCE). Then, gold nanoparticles (NG) and 1,2-naphthoquinone-4-sulfonic acid sodium (Nq) were immobilized on the PDC/GCE to prepare Nq/NG/PDC/GCE by immersing electrode into NG and Nq solution, respectively. The Nq species on NG/PDC/GCE could catalyze electrooxidation ofN-acetyl-l-cysteine (NAC) with lowering the over potential by about 600 mV. This method used for detection of NAC in dynamic range from 4.0×10-6 M to 1.30×10-4 M with a detection of limit (2s) 8.0×10-7, M.
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Researchers
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Sahar Rashid-Nadimi (Fifth Researcher), Mohsen Jahanshahi (Fourth Researcher), Fereshteh Chekin (Third Researcher), Reza Ojani (Second Researcher), Jahan Bakhsh Raoof (First Researcher)
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