Performance enhancement of polyaniline-based polymeric wire biosensor

Yuk, Jong Seol; Jin, Joon-Hyung; Alocilja, Evangelyn C.; Rose, Joan B.

doi:10.1016/j.bios.2008.07.079

Cited by 15 publications

(3 citation statements)

References 22 publications

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“…Pal et al used polyaniline nanowires as direct charge transfer (DCT) electrical transducers for the detection of foodborne pathogen, Bacillus cereus [ 112 ]. In this method, polyaniline nanowires are attached to each of the antibodies and when these modified antibodies bind to antigen to form a sandwich complex via lateral flow immunoassay method, the nanowires form a bridge between two open electrodes to give resistive measurements [ 112 , 132 , 133 , 134 ]. Forzani et al developed a hybrid amperometric and conductometric chemFET-based sensor that can detect neurotransmitter dopamine even in the presence of ascorbic acid, an interference, whose concentration can be much higher than the analyte itself [ 135 ].…”

Section: Polyaniline Nanowire-based Chemiresistive Sensorsmentioning

confidence: 99%

Conducting Polyaniline Nanowire and Its Applications in Chemiresistive Sensing

2013

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One dimensional polyaniline nanowire is an electrically conducting polymer that can be used as an active layer for sensors whose conductivity change can be used to detect chemical or biological species. In this review, the basic properties of polyaniline nanowires including chemical structures, redox chemistry, and method of synthesis are discussed. A comprehensive literature survey on chemiresistive/conductometric sensors based on polyaniline nanowires is presented and recent developments in polyaniline nanowire-based sensors are summarized. Finally, the current limitations and the future prospect of polyaniline nanowires are discussed.

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Section: Polyaniline Nanowire-based Chemiresistive Sensorsmentioning

confidence: 99%

Conducting Polyaniline Nanowire and Its Applications in Chemiresistive Sensing

2013

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“…The system was capable of detecting the target analyte concentrations in a range of 500 ng mL −1 -25 μg mL −1 with ∼10% nonspecific binding. Yuk et al 101 demonstrated the use of screen-printed silver electrodes and pulse mode measurement that can enhance the performance of PANI-based polymeric wire biosensors. Muchindu 104 worked on the same approach of using a single PANI nanowire for the detection of IgE.…”

Section: Polyaniline-based Immunosensorsmentioning

confidence: 99%

Polyaniline-based biosensors

Malhotra¹,

Dhand²,

Lakshminarayanan³

et al. 2015

NDD

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Biosensors are the subject of an immensely growing field of research owing to their broad range of applications in medicines, pharmacy, environmental monitoring, food and process control, defense and security, and principally in diagnostics. Diverse materials have been investigated for the advancement of biosensors in terms of their miniaturization, sophistication, cost, biosensing features, ie, detection limit, sensitivity, stability, selectivity, etc. Polyaniline (PANI) is one of the most interesting conductive polymers for biosensor design in view of its excellent electrochemical properties (polyelectrocatalytic characteristics, reversible redox behavior, and electrochemical tunability), straightforward processability, long-term environmental stability, and functionality-rich chemical structure. In this review, an attempt is made to compile almost all the existent literature on PANI-based biosensors in terms of enzymatic biosensors (for H 2 O 2 , glucose, cholesterol, phenol/polyphenol/catecholamine detection), genosensors (DNA sensing), and immunosensors from 2006 to 2015. Furthermore, reports available on the biosensing of urea, uric acid, creatinine, pesticides, amino acids, and other clinically significant analytes are also assembled to provide a comprehensive overview on PANI-based biosensors.

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“…While this method has been utilized to date mostly for qualitative analysis and also semi-quantitation [12][13]. Recently, some quantitative analysis have been reported for E.coli O157:H7 detection, which is based on an electrochemical sandwich immunoassay [14][15]. The resistance change caused by the polyaniline-antibody-antigen complex density formed on the membrane surface were recorded by the ohmmeter and used for the qualitative analysis.…”

Section: Introductionmentioning

confidence: 99%

Rapid Quantitative Detection of <i>E.coli</i> O157:H7 by a Impedance Immunosensor Based on Four-Wire Interdigitated Microelectrodes

Guo

et al. 2015

AMM

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Rapid-response biosensing systems are necessary to counteract threats due to high-consequence pathogens. A disposable immunosensor suitable for quantitative determination of E.coli O157:H7 in pure cultures was investigated by electrochemical impedance spectroscopy (EIS). Electric responses of this biosensor for different cell concentrations at multi-frequencies were explored utilizing disposable screen-printed silver four-wire interdigitated microelectrodes (IMEs). Additionally, the best response frequency for the detection was studied, and the relationship between the impedance at this frequency and the concentrations of E.coli O157:H7 was established. The results showed that the impedance biosensor showed linearity from 1.15×103 CFU/mL to 1.15×106 CFU/mL at 100Hz, which yielded the model coefficient to 0.951.

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Performance enhancement of polyaniline-based polymeric wire biosensor

Cited by 15 publications

References 22 publications

Conducting Polyaniline Nanowire and Its Applications in Chemiresistive Sensing

Conducting Polyaniline Nanowire and Its Applications in Chemiresistive Sensing

Polyaniline-based biosensors

Rapid Quantitative Detection of <i>E.coli</i> O157:H7 by a Impedance Immunosensor Based on Four-Wire Interdigitated Microelectrodes

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