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Supercapacitor-Based Biosensor for Low Density Lipoprotein Detection

delete2016-03-26
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OA
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A
Allen Armando Rodriguez-Silva
O
Omar Movil‐Cabrera
C
Cecilia T. Oliveira dos Anjos
J
John A. Staser *
DOI:10.1149/2.0021607jesdelete
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Abstract

Abstract

En 中文
The present work is focused on the fabrication and characterization of a novel supercapacitor-based biosensor for the detection and quantification of low density lipoprotein. More specifically, graphene oxide was functionalized with hyperbranched polyethylenimine and subsequently incorporated into chitosan in order to obtain a nanocomposite film which was cast over a Pt disk electrode. Finally, the electrode surface was bio-functionalized with anti-apolipoprotein B-100 using the N-hydroxysuccimide/N-ethyl-N'-(3-dimethylaminopropyl carbodiimide chemical coupling approach. The material properties of the electrode were evaluated by Fourier transform infrared spectroscopy, Raman spectroscopy, X-ray diffraction, thermogravimetric analysis, scanning electron microscopy, and cyclic voltammetry. The supercapacitor-based biosensor exhibited good specificity and sensitivity to low density lipoprotein in the concentration range from 10 to 120 mg/dL and also excellent response times (similar to 1 s). Enhanced response time and specificity of the biosensor suggest that these materials may be utilized for guiding future of point-of-care devices. (C) The Author(s) 2016. Published by ECS. All rights reserved.
Keywords:
GRAPHENE OXIDE
ELECTROCHEMICAL IMMUNOSENSOR
BIOMEDICAL APPLICATIONS
CARBON NANOTUBES
OXIDATION
SENSORS
LDL
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Journal

Journal of the Electrochemical Society cover
Journal of the Electrochemical Society
IF:
3.3
Papers:
3.3W
Citations:
9.4W

Organization

U
University System of Ohio
Scholars:
15.4W
Papers: 13.0W
Citations: 200