<P>This research demonstrated the development of a stable, sensitive, and selective electrochemical method based on poly(N-(1-Naphthyl) ethylenediamine dihydrochloride) nanofibers-modified anodized glassy carbon electrode (PNEDA/AGCE) for the de...
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https://www.riss.kr/link?id=A107466551
2018
-
SCI,SCIE,SCOPUS
학술저널
89-95(7쪽)
0
상세조회0
다운로드다국어 초록 (Multilingual Abstract)
<P>This research demonstrated the development of a stable, sensitive, and selective electrochemical method based on poly(N-(1-Naphthyl) ethylenediamine dihydrochloride) nanofibers-modified anodized glassy carbon electrode (PNEDA/AGCE) for the de...
<P>This research demonstrated the development of a stable, sensitive, and selective electrochemical method based on poly(N-(1-Naphthyl) ethylenediamine dihydrochloride) nanofibers-modified anodized glassy carbon electrode (PNEDA/AGCE) for the detection of dopamine (DA) in the presence of ascorbic acid (AA) and uric acid (UA). The PNEDA/AGCE sensor could easily separate the oxidation signals of AA, DA, and UA from their mixture solution in PBS (pH 7.0). It showed linear behavior over wide concentration ranges for DA sensing and the detection limits were ca. 0.070 and 0.075 mu M in PBS (pH 7.0) and diluted human serum samples respectively, while the sensitivities were ca. 0.085 and 0.080 mu A.mu M-1, respectively. The high sensitivity for the PNEDA/AGCE sensor can be ascribed to the facile H-bonding interaction between the free -NH2 groups of PNEDA and oxidizable -OH groups of DA, which was verified by Gradient-corrected density functional theory (DFT) calculation. The PNEDA/AGCE sensor showed excellent repeatability and reproducibility with very low RSD (%) and excellent recoveries of DA concentrations in human serum samples. (C) 2018 The Electrochemical Society.</P>
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