Journal
MATERIALS SCIENCE & ENGINEERING C-MATERIALS FOR BIOLOGICAL APPLICATIONS
Volume 59, Issue -, Pages 965-969Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.msec.2015.10.093
Keywords
Immunosensor; HIgG; OPPy-Au-nano; Label-free method; EIS
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Funding
- Research Council of Razi University Kermanshah, Iran [84123/17]
- Iran National Elites Foundation (INEF)
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Herein, an electrochemical human immunoglobulin G (HIgG) immunosensor was fabricated using overoxidized polypyrrole decorated with gold nanoparticle (OPPy-Au-nano) modified screen printed electrode (OPPy-Au-nano/SPE). The results clearly demonstrate that OPPy-Au-nano film is very permeable to [Fe(CN)(6)](3-/4-). Therefore, the fabrication of immunosensor based on permeability of OPPy-Au-nano film to [Fe(CN)(6)](3-/4-) probe is a novel strategy for the fabrication of label free electrochemical immunosensor. The electrochemical impedance spectroscopy (EIS) techniques are used for the determination of HIgG in the concentration range 0.5 to 125.0 ng ml(-1) and with a limit of detection of 0.02 ng mL(-1), respectively. (C) 2015 Elsevier B.V. All rights reserved.
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