Please use this identifier to cite or link to this item: https://doi.org/10.1002/elan.200403124
Title: Electrochemical biosensing platforms using phthalocyanine-functionalized carbon nanotube electrode
Authors: Ye, J.-S. 
Wen, Y.
De Zhang, W.
Cui, H.F. 
Xu, G.Q. 
Sheu, F.-S. 
Keywords: Biosensor
Electrocatalysis
Functionalization
Iron-phthalocyanine
Multi-walled carbon nanotubes
Issue Date: Jan-2005
Source: Ye, J.-S., Wen, Y., De Zhang, W., Cui, H.F., Xu, G.Q., Sheu, F.-S. (2005-01). Electrochemical biosensing platforms using phthalocyanine-functionalized carbon nanotube electrode. Electroanalysis 17 (1) : 89-96. ScholarBank@NUS Repository. https://doi.org/10.1002/elan.200403124
Abstract: Iron-phthalocyanines (FePc) are functionalized at multi-walled carbon nanotubes (MWNTs) to remarkably improve the sensitivity toward hydrogen peroxide. We constructed a highly sensitive and selective glucose sensor on FePc-MWNTs electrode based on the immobilization of glucose oxidase (GOD) on poly-o-aminophenol (POAP)-electropolymerized electrode surface. SEM images indicate that GOD enzymes trapped in POAP film tend to deposit primarily on the curved tips and evenly disperse along the sidewalls. The resulting GOD©POAP/FePc-MWNTs biosensor exhibits excellent performance for glucose with a rapid response (less than 8 s), a wide linear range (up to 4.0 × 10-3 M), low detection limits (2.0 × 10-7 M with a signal-to-noise of 3), a highly reproducible response (RSD of 2.6%), and long-term stability (120 days). Such characteristics may be attributed to the catalytic activity of FePc and carbon nanotube, permselectivity of POAP film, as well as the large surface area of carbon nanotube materials. © 2005 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
Source Title: Electroanalysis
URI: http://scholarbank.nus.edu.sg/handle/10635/93695
ISSN: 10400397
DOI: 10.1002/elan.200403124
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