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Synthesis and Characterization of Novel Quinone‐Amine Polymer/Carbon Nanotubes Composite for Sensitive Electrocatalytic Detection of NADH
Author(s) -
Tu Xinman,
Xie Qingji,
Huang Zhao,
Yang Qin,
Yao Shouzhuo
Publication year - 2007
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/elan.200703939
Subject(s) - overpotential , quinone , nanocomposite , amine gas treating , redox , detection limit , iodate , carbon nanotube , chemistry , ascorbic acid , polymer , inorganic chemistry , electrode , materials science , organic chemistry , electrochemistry , nanotechnology , chromatography , food science , iodide
A novel nanocomposite of quinone‐amine polymer and multiwalled carbon nanotubes was synthesized from iodate‐oxidation/Michael addition reaction of 1,2‐dihydroxybenzene with o ‐phenylenediamine, which was characterized by TEM, FTIR and UV‐vis spectra. The nanocomposite modified Au electrode with well‐defined quinone redox peaks effectively mediated the oxidation of NADH in pH 7.0 phosphate buffer, with an overpotential decrease by ca. 470 mV (vs. bare Au), a limit of detection of 6.4 nmol L −1 and good antiinterferent ability.