Abstract
Electroactive multilayer film of myoglobin (Mb)-, chitosan (CS)-, and poly(dimethyldiallylammonium chloride) (PDDA)-wrapped multi-wall carbon nanotubes (MWNTs) is fabricated on a gold electrode via layer-by-layer (LBL) technique. The assembled multilayer films is characterized by scanning electron microscopy (SEM), UV-vis spectroscopy, cyclic voltammetry (CV), and electrochemical impedance spectroscopy (EIS). UV-vis spectroscopy showed that Mb in the films retained its near-native structure. The stable multilayerfilm-modified gold electrodes showed good electroactivity in protein-free buffer solution, which is originated from protein heme Fe(III)/Fe(II) redox couple. The modified electrode exhibited good electrocatalytic property toward reduction of H2O2 and trichloroacetic acid, indicating the potential application as amperometric biosensor.
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Published in Russian in Elektrokhimiya, 2008, Vol. 44, No. 11, pp. 1366–1376.
The text was submitted by the authors in English.
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Zhang, L.P., Gong, W.J., Pan, Y. et al. Fabrication of multilayer-film-modified gold electrode composed of myoglobin, chitosan, and polyelectrolyte-wrapped multi-wall carbon nanotubes by layer-by-layer assembled technique and electrochemical catalysis for hydrogen peroxide and trichloroacetic acid. Russ J Electrochem 44, 1271–1279 (2008). https://doi.org/10.1134/S1023193508110128
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DOI: https://doi.org/10.1134/S1023193508110128